901.7 Light Source and Intensity - Revision history

Smithk: /* 901.7.5 Underpass Lighting */

2020-08-11T16:13:36Z

901.7.5 Underpass Lighting

← Older revision		Revision as of 11:13, 11 August 2020
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	==901.7.5 Underpass Lighting==		==901.7.5 Underpass Lighting==

	[[image:901.7.5 Underpass Lighting.jpg\|~~left~~\|thumb\|225px\|<center>'''Underpass Lighting'''</center>]]		[[image:901.7.5 Underpass Lighting.jpg\|right\|thumb\|225px\|<center>'''Underpass Lighting'''</center>]]
	Underpass Luminaires. Underpass luminaires are 150 watt high pressure sodium (HPS) units with integral 24-0 or 480-volt ballasts for wall mounting outdoors.		Underpass Luminaires. Underpass luminaires are 150 watt high pressure sodium (HPS) units with integral 24-0 or 480-volt ballasts for wall mounting outdoors.

	Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.		Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.





	==901.7.6 High Mast Lighting==		==901.7.6 High Mast Lighting==

Smithk: Per TS, numerous minor clarifications

2020-08-11T16:13:03Z

Per TS, numerous minor clarifications

← Older revision		Revision as of 11:13, 11 August 2020
Line 57:		Line 57:

	Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.		Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.

Smithk: Per TS, numerous minor clarifications

2020-08-11T16:12:11Z

Per TS, numerous minor clarifications

Smithk: /* 901.7.2 Average Maintained Intensity */ minor correction

2019-05-14T14:29:41Z

901.7.2 Average Maintained Intensity: minor correction

← Older revision		Revision as of 09:29, 14 May 2019
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	Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.		Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.

	Basic lighting at interchanges provides an average maintained intensity of approximately 0.6 fc (6.5 lux) or more in the areas lit. Examples of interchange lighting are shown in [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf\|Fig. 901.1.1 Basic Lighting at Diamond Interchanges]], [[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf\|Fig. 901.1.2 Directional Interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf\|Fig. 901.1.3 Cloverleaf Interchanges]]. Areas of potential vehicle conflict including exit gore areas, the ends of acceleration lanes, ramp merges, ramp diverges, weaving areas, ramp terminal intersections, etc. are to be lit.		Basic lighting at interchanges provides an average maintained intensity of approximately 0.6 fc (6.5 lux) or more in the areas lit. Examples of interchange lighting are shown in [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf\|Fig. 901.1 Basic Lighting at Diamond Interchanges]], [[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf\|Fig. 901.2 Directional Interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf\|Fig. 901.3 Cloverleaf Interchanges]]. Areas of potential vehicle conflict including exit gore areas, the ends of acceleration lanes, ramp merges, ramp diverges, weaving areas, ramp terminal intersections, etc. are to be lit.

	Guidance is available for [[media:901.7.5.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.		Guidance is available for [[media:901.7.5.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.

Smithk: updated Std Plan links

2018-11-28T21:11:21Z

updated Std Plan links

EPGsysop: /* 901.7.2 Average Maintained Intensity */

2018-02-27T16:16:51Z

901.7.2 Average Maintained Intensity

← Older revision		Revision as of 11:16, 27 February 2018
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	The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.		The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.

	Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].		Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.2 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].

	Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.		Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.

EPGsysop: /* 901.7.2 Average Maintained Intensity */ Per EPS, updated link

2018-02-27T16:01:49Z

901.7.2 Average Maintained Intensity: Per EPS, updated link

← Older revision		Revision as of 11:01, 27 February 2018
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	The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.		The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.

	Examples of lighting configurations are shown in [[media:901.1.~~4 (f8-01.4)~~ Typical Basic Lighting ~~for Signalized Interchange, Channelized Intersections and Roundabouts Using Divisional Islands~~.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].		Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].

	Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.		Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.

EPGsysop: Per TS, updated figures with LED info

2018-02-15T16:40:58Z

Per TS, updated figures with LED info

EPGsysop: Per TS, replaced LED wattage references with A,B and C nomenclature

2018-02-13T16:48:51Z

Per TS, replaced LED wattage references with A,B and C nomenclature

← Older revision		Revision as of 11:48, 13 February 2018
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	==901.7.7 Luminaire Mounting Heights==		==901.7.7 Luminaire Mounting Heights==

	~~103 watt~~ LED luminaires are mounted 30 ft. above the pavement. ~~170 watt~~ LED and ~~275 watt~~ LED luminaires are mounted 45 ft. above the pavement. Requests for mounting heights other than 30 or 45 ft. are to be coordinated with Highway Safety and Traffic.		LED-A luminaires are mounted 30 ft. above the pavement. LED-B and LED-C luminaires are mounted 45 ft. above the pavement. Requests for mounting heights other than 30 or 45 ft. are to be coordinated with Highway Safety and Traffic.

	==901.7.8 Location of Luminaires and Poles for 30 ft. Mounting Height==		==901.7.8 Location of Luminaires and Poles for 30 ft. Mounting Height==
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	Light pole spacing is to be as close as possible to the calculated theoretical spacing required for the average maintained intensity of light.		Light pole spacing is to be as close as possible to the calculated theoretical spacing required for the average maintained intensity of light.

	Only in exceptional cases can lighting be entirely from poles located in the median, such as depressed roadway with retaining walls or on or behind concrete median barriers because there is better utilization of lumens from lamps located on the outside of wide pavements. For example, when a ~~103~~-~~watt LED~~ luminaire is located above the median edge of a six-lane highway with a 16 ft. median, and a mounting height of 30 ft., 40 percent is utilized. Where the same conditions exist for an installation over the outside edge, 58 percent is utilized. The maximum utilization is 60 percent. Good results are obtained by outside-inside alternating locations with twin bracket arms on the median poles. Underpass luminaires are sometimes mounted on the retaining walls of a depressed roadway.		Only in exceptional cases can lighting be entirely from poles located in the median, such as depressed roadway with retaining walls or on or behind concrete median barriers because there is better utilization of lumens from lamps located on the outside of wide pavements. For example, when a LED-A luminaire is located above the median edge of a six-lane highway with a 16 ft. median, and a mounting height of 30 ft., 40 percent is utilized. Where the same conditions exist for an installation over the outside edge, 58 percent is utilized. The maximum utilization is 60 percent. Good results are obtained by outside-inside alternating locations with twin bracket arms on the median poles. Underpass luminaires are sometimes mounted on the retaining walls of a depressed roadway.

	To summarize: (1) Lighting located on the outside of the roadway is preferred where possible; (2) Alternating poles located outside of the roadway and median poles may be used for traffic ways with more than six lanes each direction provided the median design meets requirements; (3) Depressed roadways with retaining walls may be lighted entirely from median poles, with the same requirements for median design, or from underpass luminaires mounted on the walls.		To summarize: (1) Lighting located on the outside of the roadway is preferred where possible; (2) Alternating poles located outside of the roadway and median poles may be used for traffic ways with more than six lanes each direction provided the median design meets requirements; (3) Depressed roadways with retaining walls may be lighted entirely from median poles, with the same requirements for median design, or from underpass luminaires mounted on the walls.
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	* Lighting cable sizes are no greater than #8 AWG (10 mm<sup>2</sup>).		* Lighting cable sizes are no greater than #8 AWG (10 mm<sup>2</sup>).

	* No more than 6 – ~~103~~-~~watt LED~~ luminaires, 6 – ~~170~~-~~watt LED~~ luminaires, or 4 – ~~275~~-~~watt LED~~ luminaires.		* No more than 6 – LED-A luminaires, 6 – LED-B luminaires, or 4 – LED-C luminaires.

	* No more than six 2c - #12 (2c - 4 mm<sup>2</sup>) cables or eight 1c - #8 (1c - 10 mm<sup>2</sup>) cables.		* No more than six 2c - #12 (2c - 4 mm<sup>2</sup>) cables or eight 1c - #8 (1c - 10 mm<sup>2</sup>) cables.

EPGsysop: Per TS, provided guidance to allow the use of LED luminaires for roadway lighting.

2018-02-09T23:22:10Z

Per TS, provided guidance to allow the use of LED luminaires for roadway lighting.

← Older revision		Revision as of 18:22, 9 February 2018
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	==901.7.1 ~~High Pressure Sodium~~ (~~HPS~~) ~~Lamps~~==		==901.7.1 Light Emitting Diode (LED) Luminaires==

	~~HPS lamps~~ are used for fixed source lighting of roadways ~~and underpasses~~. ~~150-watt lamps~~ are ~~rated at 16,000 lumens, 250-watt lamps are rated at 27,500 lumens,~~ and ~~400-watt lamps are rated at 50,000 lumens~~.		LED luminaires are used for fixed source lighting of roadways. Luminaire selection and use are as identified in MoDOT’s standard plans and specifications.

	==901.7.2 Average Maintained Intensity==		==901.7.2 Average Maintained Intensity==
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	==901.7.3 Uniformity==		==901.7.3 Uniformity==

	The uniformity ratio is the ratio of average footcandle (lux) of illuminance on the pavement area to the footcandle (lux) at the point of minimum illuminance on the pavement. Continuous lighting must provide a uniformity ratio of 4:1 or better for 45 ft. mounting heights and 6:1 or better for 30 ft. mounting heights. Spacing of luminaires based on this criteria is found in [[901.11 ~~High Pressure Sodium~~ Luminaire Performance and Computation of Roadway Illumination\|EPG 901.11 ~~High Pressure Sodium~~ Luminaire Performance and Computation of Roadway Illumination]].		The uniformity ratio is the ratio of average footcandle (lux) of illuminance on the pavement area to the footcandle (lux) at the point of minimum illuminance on the pavement. Continuous lighting must provide a uniformity ratio of 4:1 or better for 45 ft. mounting heights and 6:1 or better for 30 ft. mounting heights. Spacing of luminaires based on this criteria is found in [[901.11 Light Emitting Diode (LED) Luminaire Performance and Computation of Roadway Illumination\|EPG 901.11 Light Emitting Diode (LED) Luminaire Performance and Computation of Roadway Illumination]].

	==901.7.4 Adaption (Transition) Lighting==		==901.7.4 Adaption (Transition) Lighting==
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	[[image:901.7.5 Underpass Lighting.jpg\|left\|thumb\|225px\|<center>'''Underpass Lighting'''</center>]]		[[image:901.7.5 Underpass Lighting.jpg\|left\|thumb\|225px\|<center>'''Underpass Lighting'''</center>]]
			Underpass Luminaires. Underpass luminaires are 150 watt HPS units with inegral 240 or 480 volt ballasts for wall mounting outdoors.

	Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.		Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.



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	[http://wwwi/intranet/br/default.htm Bridge] will design the foundation and detail foundation plans to be included in the project plans. The district is responsible for all bid items associated with high mast lighting and to design the structure above the foundation.		[http://wwwi/intranet/br/default.htm Bridge] will design the foundation and detail foundation plans to be included in the project plans. The district is responsible for all bid items associated with high mast lighting and to design the structure above the foundation.

	==901.7.7 Mounting Heights==		==901.7.7 Luminaire Mounting Heights==

	~~150-~~watt ~~lamps~~ are mounted 30 ft. above the pavement. ~~250-~~watt and ~~400-~~watt ~~lamps~~ are mounted 45 ft. above the pavement. Requests for mounting heights other than 30 or 45 ft. are to be coordinated with ~~[http://wwwi/intranet/tr/~~ Traffic].		103 watt LED luminaires are mounted 30 ft. above the pavement. 170 watt LED and 275 watt LED luminaires are mounted 45 ft. above the pavement. Requests for mounting heights other than 30 or 45 ft. are to be coordinated with Highway Safety and Traffic.

	==901.7.8 Location of Luminaires and Poles for 30 ft. Mounting Height==		==901.7.8 Location of Luminaires and Poles for 30 ft. Mounting Height==
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	Light pole spacing is to be as close as possible to the calculated theoretical spacing required for the average maintained intensity of light.		Light pole spacing is to be as close as possible to the calculated theoretical spacing required for the average maintained intensity of light.

	Only in exceptional cases can lighting be entirely from poles located in the median, such as depressed roadway with retaining walls or on or behind concrete median barriers because there is better utilization of lumens from lamps located on the outside of wide pavements. For example, when a ~~20,000~~-~~lumen~~ luminaire is located above the median edge of a six-lane highway with a 16 ft. median, and a mounting height of 30 ft., 40 percent is utilized. Where the same conditions exist for an installation over the outside edge, 58 percent is utilized. The maximum utilization is 60 percent. Good results are obtained by outside-inside alternating locations with twin bracket arms on the median poles. ~~150-watt underpass~~ luminaires are sometimes mounted on the retaining walls of a depressed roadway.		Only in exceptional cases can lighting be entirely from poles located in the median, such as depressed roadway with retaining walls or on or behind concrete median barriers because there is better utilization of lumens from lamps located on the outside of wide pavements. For example, when a 103-watt LED luminaire is located above the median edge of a six-lane highway with a 16 ft. median, and a mounting height of 30 ft., 40 percent is utilized. Where the same conditions exist for an installation over the outside edge, 58 percent is utilized. The maximum utilization is 60 percent. Good results are obtained by outside-inside alternating locations with twin bracket arms on the median poles. Underpass luminaires are sometimes mounted on the retaining walls of a depressed roadway.

	To summarize: (1) Lighting located on the outside of the roadway is preferred where possible; (2) Alternating poles located outside of the roadway and median poles may be used for traffic ways with more than six lanes each direction provided the median design meets requirements; (3) Depressed roadways with retaining walls may be lighted entirely from median poles, with the same requirements for median design, or from underpass luminaires mounted on the walls.		To summarize: (1) Lighting located on the outside of the roadway is preferred where possible; (2) Alternating poles located outside of the roadway and median poles may be used for traffic ways with more than six lanes each direction provided the median design meets requirements; (3) Depressed roadways with retaining walls may be lighted entirely from median poles, with the same requirements for median design, or from underpass luminaires mounted on the walls.
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	* Lighting cable sizes are no greater than #8 AWG (10 mm<sup>2</sup>).		* Lighting cable sizes are no greater than #8 AWG (10 mm<sup>2</sup>).

	* No more than 6 – ~~150~~-watt luminaires, 6 – ~~250~~-watt luminaires, or 4 – ~~400~~-watt luminaires.		* No more than 6 – 103-watt LED luminaires, 6 – 170-watt LED luminaires, or 4 – 275-watt LED luminaires.

	* No more than six 2c - #12 (2c - 4 mm<sup>2</sup>) cables or eight 1c - #8 (1c - 10 mm<sup>2</sup>) cables.		* No more than six 2c - #12 (2c - 4 mm<sup>2</sup>) cables or eight 1c - #8 (1c - 10 mm<sup>2</sup>) cables.

← Older revision		Revision as of 09:29, 14 May 2019
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	Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.		Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.

	Basic lighting at interchanges provides an average maintained intensity of approximately 0.6 fc (6.5 lux) or more in the areas lit. Examples of interchange lighting are shown in [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf\|Fig. 901.1.1 Basic Lighting at Diamond Interchanges]], [[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf\|Fig. 901.1.2 Directional Interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf\|Fig. 901.1.3 Cloverleaf Interchanges]]. Areas of potential vehicle conflict including exit gore areas, the ends of acceleration lanes, ramp merges, ramp diverges, weaving areas, ramp terminal intersections, etc. are to be lit.		Basic lighting at interchanges provides an average maintained intensity of approximately 0.6 fc (6.5 lux) or more in the areas lit. Examples of interchange lighting are shown in [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf\|Fig. 901.1 Basic Lighting at Diamond Interchanges]], [[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf\|Fig. 901.2 Directional Interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf\|Fig. 901.3 Cloverleaf Interchanges]]. Areas of potential vehicle conflict including exit gore areas, the ends of acceleration lanes, ramp merges, ramp diverges, weaving areas, ramp terminal intersections, etc. are to be lit.

	Guidance is available for [[media:901.7.5.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.		Guidance is available for [[media:901.7.5.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.

← Older revision		Revision as of 11:16, 27 February 2018
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	The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.		The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.

	Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].		Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.2 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].

	Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.		Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.

← Older revision		Revision as of 11:01, 27 February 2018
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	The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.		The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.

	Examples of lighting configurations are shown in [[media:901.1.~~4 (f8-01.4)~~ Typical Basic Lighting ~~for Signalized Interchange, Channelized Intersections and Roundabouts Using Divisional Islands~~.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].		Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].

	Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.		Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.

← Older revision		Revision as of 11:12, 11 August 2020
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	The average maintained intensity is the average level of horizontal illuminance on the roadway pavement when the output of the lamp and luminaire is diminished by the maintenance factor.		The average maintained intensity is the average level of horizontal illuminance on the roadway pavement when the output of the lamp and luminaire is diminished by the maintenance factor.

	Continuous lighting installations along freeways, urban arterials, expressways and ramp connections thereto ~~must~~ provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux). Continuous lighting installations on existing roadways, not including freeways, urban arterials, expressways or ramp connections thereto ~~must~~ provide an average maintained intensity of 0.4 fc (4.3 lux) and a minimum intensity of 0.2 fc (2.2 lux).		Continuous lighting installations along freeways, urban arterials, expressways, and ramp connections thereto shall provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux). Continuous lighting installations on existing roadways, not including freeways, urban arterials, expressways or ramp connections thereto shall provide an average maintained intensity of 0.4 fc (4.3 lux) and a minimum intensity of 0.2 fc (2.2 lux).

	Basic lighting at intersections, including ramp terminals at crossroads, ~~is to~~ provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) within the limits of the intersection.		Basic lighting at intersections, including ramp terminals at crossroads, shall provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) within the limits of the intersection.

	The approach noses of all divisional islands and channelizing islands with non-mountable curbs ~~are to~~ be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.		The approach noses of all divisional islands and channelizing islands with non-mountable curbs shall be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.

	Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.2 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].		Examples of lighting configurations are shown in [[media:901.1.2 Typical Basic Lighting Plan.pdf\|Fig. 901.1.2 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].
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	Guidance is available for [[media:901.7.5.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.		Guidance is available for [[media:901.7.5.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.

	High mast lighting in complex interchanges ~~is to~~ provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) on all paved driving surfaces within the interchange. The areas of potential vehicle conflict as described above are lit to a maintained intensity of 0.6 fc (6.5 lux) or higher.		High mast lighting in complex interchanges shall provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) on all paved driving surfaces within the interchange. The areas of potential vehicle conflict as described above are lit to a maintained intensity of 0.6 fc (6.5 lux) or higher.

	The figures in this article show configurations for many typical situations. For unusual geometrics or lighting conditions, use the ALADAN program, or ~~its~~ equivalent, to determine the lighting layout and illumination levels.		The figures in this article show configurations for many typical situations. For unusual geometrics or lighting conditions, use the ALADAN program, or an equivalent, to determine the lighting layout and illumination levels.

	==901.7.3 Uniformity==		==901.7.3 Uniformity==
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	[[image:901.7.5 Underpass Lighting.jpg\|left\|thumb\|225px\|<center>'''Underpass Lighting'''</center>]]		[[image:901.7.5 Underpass Lighting.jpg\|left\|thumb\|225px\|<center>'''Underpass Lighting'''</center>]]
	Underpass Luminaires. Underpass luminaires are 150 watt HPS units with ~~inegral 240~~ or 480 volt ballasts for wall mounting outdoors.		Underpass Luminaires. Underpass luminaires are 150 watt high pressure sodium (HPS) units with integral 24-0 or 480-volt ballasts for wall mounting outdoors.

	Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.		Underpasses over 75 ft. long, measured at right angles to the structure, are lighted with underpass luminaires when necessary to maintain the continuity of existing or proposed lighting. If roadway lighting units positioned near each portal provide sufficient light to penetrate the underpass and maintain the same intensity of illumination or uniformity ratio as is used on the approach roadways, the underpass luminaires are not used.
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	High mast lighting is principally used at complex interchanges and lights a large area by a group of luminaires mounted in a fixed orientation at the top of a tall mast, generally 80 ft. or taller. The district must authorize high mast lighting. The request for high mast lighting conceptual approval is to be included with the lighting warrants. Data supporting the selection of pole height, pole location and type of luminaires is to be included with the preliminary lighting plan. Where high mast lighting is used at complex interchanges, adaptation lighting is recommended for each section where vehicles enter and leave the interchange.		High mast lighting is principally used at complex interchanges and lights a large area by a group of luminaires mounted in a fixed orientation at the top of a tall mast, generally 80 ft. or taller. The district must authorize high mast lighting. The request for high mast lighting conceptual approval is to be included with the lighting warrants. Data supporting the selection of pole height, pole location and type of luminaires is to be included with the preliminary lighting plan. Where high mast lighting is used at complex interchanges, adaptation lighting is recommended for each section where vehicles enter and leave the interchange.

	~~[http://wwwi/intranet/br/default.htm Bridge] will design the foundation and detail foundation plans to be included in the project plans.~~ The district is responsible for all bid items associated with high mast lighting and to design the structure above the foundation.		The district is responsible for all bid items associated with high mast lighting and to design the foundation and the structure above the foundation for inclusion in the project plans.

	==901.7.7 Luminaire Mounting Heights==		==901.7.7 Luminaire Mounting Heights==

	LED-A luminaires are mounted 30 ft. above the pavement. LED-B and LED-C luminaires are mounted 45 ft. above the pavement. Requests for mounting heights other than 30 or 45 ft. ~~are to~~ be coordinated with Highway Safety and Traffic.		LED-A luminaires are mounted 30 ft. above the pavement. LED-B and LED-C luminaires are mounted 45 ft. above the pavement. Requests for mounting heights other than 30 or 45 ft. will be coordinated with [http://sp/sites/ts/Pages/default.aspx Highway Safety and Traffic].

	==901.7.8 Location of Luminaires and Poles for 30 ft. Mounting Height==		==901.7.8 Location of Luminaires and Poles for 30 ft. Mounting Height==
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	30 ft. maximum - 15 ft. bracket arm = 15 ft. maximum setback		30 ft. maximum - 15 ft. bracket arm = 15 ft. maximum setback

	Where right of way is sufficient, lighting poles located on the outside of the roadway are to be placed outside the clear zone, but no farther than 30 ft. from the edge of travelway in order to maintain an effective utilization of the light source. Poles are to be located at a uniform distance from the roadway. Lighting poles located on the outside of ramps are to be placed a maximum of 20 ft. from the edge of the ramp’s driving lane. See [[media:901.7.5.pdf\|Figure 901.7.5]] for luminaire locations at on and off ramp areas. Lighting poles located adjacent to auxiliary lanes are placed no farther than 30 ft. from the nearest edge of the through lane. Lighting poles have a bracket rise of 5 ft. 6 in. The 45 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.		Where right of way is sufficient, lighting poles located on the outside of the roadway are to be placed outside the clear zone, but no farther than 30 ft. from the edge of travelway in order to maintain an effective utilization of the light source. Poles are to be located at a uniform distance from the roadway. Lighting poles located on the outside of ramps are to be placed a maximum of 20 ft. from the edge of the ramp’s driving lane. See [[media:901.7.5.pdf\|Figure 901.7.5]] for luminaire locations at on- and off-ramp areas. Lighting poles located adjacent to auxiliary lanes are placed no farther than 30 ft. from the nearest edge of the through lane. Lighting poles have a bracket rise of 5 ft. 6 in. The 45 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.
	[[image:901.7.9 AT.jpg\|right\|135px\|thumb\|<center>'''Type AT pole base'''</center>]]		[[image:901.7.9 AT.jpg\|right\|135px\|thumb\|<center>'''Type AT pole base'''</center>]]
	Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed according to [https://www.modot.org/media/16856 Standard Plan 606.00]. Shaft lengths are determined from the cross-section at each pole location for pole designs 1 through 5 as shown on the plans.		Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed according to [https://www.modot.org/media/16856 Standard Plan 606.00]. Shaft lengths are determined from the cross-section at each pole location for pole designs 1 through 5 as shown on the plans.
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	==901.7.11 Signalized Intersections==		==901.7.11 Signalized Intersections==

	Lighting will be provided at all signalized intersections. All quadrants of the intersection are to be illuminated whether or not there are islands on all approaches. Lighting at signalized intersections is to provide an average maintained intensity as specified in EPG 901.7.2. If the intersection has raised channelizing islands or divisional islands, the intersection is to be illuminated by direct reflectance (see [[media:901.7.2.pdf\|Figure 901.7.2]]). The luminaire is to be located in front of the nose of any island in accordance with [[media:901.7.1.pdf\|Figure 901.7.1]]. For those approaches without raised islands, the luminaire is to be located as if an island existed on that approach. Direct reflectance and signal pole lighting are not to be mixed.		Lighting will be provided at all signalized intersections. All quadrants of the intersection are to be illuminated whether or not there are islands on all approaches. Lighting at signalized intersections is to provide an average maintained intensity as specified in [[#901.7.2 Average Maintained Intensity\|EPG 901.7.2]]. If the intersection has raised channelizing islands or divisional islands, the intersection is to be illuminated by direct reflectance (see [[media:901.7.2.pdf\|Figure 901.7.2]]). The luminaire is to be located in front of the nose of any island in accordance with [[media:901.7.1.pdf\|Figure 901.7.1]]. For those approaches without raised islands, the luminaire is to be located as if an island existed on that approach. Direct reflectance and signal pole lighting are not to be mixed.

	At signalized ramp terminals where basic lighting along the freeway is planned or in place, lighting with separate light poles and conduit systems is recommended.		At signalized ramp terminals where basic lighting along the freeway is planned or in place, lighting with separate light poles and conduit systems is recommended.
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	If the intersection does not have raised islands, the luminaires may be placed on the signal poles to provide silhouette discernment lighting (see [[media:901.7.2.pdf\|Figure 901.7.2]]). Each quadrant of the intersection is to be illuminated. The luminaires are to be installed directly over the mast arms or cable spans to provide the proper silhouette effect. If the intersection is located within the limits of continuous lighting meeting intensity requirements, the signal pole lighting is not required.		If the intersection does not have raised islands, the luminaires may be placed on the signal poles to provide silhouette discernment lighting (see [[media:901.7.2.pdf\|Figure 901.7.2]]). Each quadrant of the intersection is to be illuminated. The luminaires are to be installed directly over the mast arms or cable spans to provide the proper silhouette effect. If the intersection is located within the limits of continuous lighting meeting intensity requirements, the signal pole lighting is not required.

	Lighting control for 120-volt signal pole lighting or separate pole lighting is shown on [https://www.modot.org/media/16911 Standard Plan 902.15]. If the capacity of this control box is exceeded or if the lighting is part of a larger system, then a 240-volt or 480-volt base-mounted control station is used. Where separate light poles and 240- and 480-volt lighting circuits are used at signalized intersections, the wiring, conduit, pull boxes and lighting control station are to be separated from the signal equipment. It is not desirable to have higher voltage lighting wiring mixed with the 120-volt signal control wiring. Signal and lighting controllers can share a power supply, but separate meters and disconnect switches will be needed (see ~~standard plans~~).		Lighting control for 120-volt signal pole lighting or separate pole lighting is shown on [https://www.modot.org/media/16911 Standard Plan 902.15]. If the capacity of this control box is exceeded or if the lighting is part of a larger system, then a 240-volt or 480-volt base-mounted control station is used. Where separate light poles and 240- and 480-volt lighting circuits are used at signalized intersections, the wiring, conduit, pull boxes and lighting control station are to be separated from the signal equipment. It is not desirable to have higher voltage lighting wiring mixed with the 120-volt signal control wiring. Signal and lighting controllers can share a power supply, but separate meters and disconnect switches will be needed (see [https://www.modot.org/media/16911 Standard Plan 902.15]).

	==901.7.12 Control Station and Power Supply==		==901.7.12 Control Station and Power Supply==
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	* No more than 6 – LED-A luminaires, 6 – LED-B luminaires, or 4 – LED-C luminaires.		* No more than 6 – LED-A luminaires, 6 – LED-B luminaires, or 4 – LED-C luminaires.

	* No more than six 2c - #12 (2c - 4 mm<sup>2</sup>) cables or eight 1c - #8 (1c - 10 mm<sup>2</sup>) cables.		* No more than six 2c. - #12 (2c. - 4 mm<sup>2</sup>) cables or eight 1c. - #8 (1c. - 10 mm<sup>2</sup>) cables.

	If any of these conditions are exceeded, the 240-volt, 4-circuit control station is to be used.		If any of these conditions are exceeded, the 240-volt, 4-circuit control station is to be used.

← Older revision		Revision as of 16:11, 28 November 2018
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	Luminaires are mounted 30 ft. above the edge of travelway and within 3 ft. of the edge of travelway to best utilize available light. Lighting poles have a 28 ft. shaft length and an 18 in. bracket rise. The 30 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.		Luminaires are mounted 30 ft. above the edge of travelway and within 3 ft. of the edge of travelway to best utilize available light. Lighting poles have a 28 ft. shaft length and an 18 in. bracket rise. The 30 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.

	Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed in accordance with [~~http~~://www.modot.~~mo.gov/business/standards_and_specs~~/~~documents~~/~~60600.pdf~~ Standard Plan 606.00].		Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed in accordance with [https://www.modot.org/media/16856 Standard Plan 606.00].

	Type B (bridge-mounted) poles on bridge safety barrier curbs of 2 ft. 8 in. height will result in a 30 ft. mounting height above edge of travelway. Consult with Bridge to coordinate design details.		Type B (bridge-mounted) poles on bridge safety barrier curbs of 2 ft. 8 in. height will result in a 30 ft. mounting height above edge of travelway. Consult with Bridge to coordinate design details.
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	Where right of way is sufficient, lighting poles located on the outside of the roadway are to be placed outside the clear zone, but no farther than 30 ft. from the edge of travelway in order to maintain an effective utilization of the light source. Poles are to be located at a uniform distance from the roadway. Lighting poles located on the outside of ramps are to be placed a maximum of 20 ft. from the edge of the ramp’s driving lane. See [[media:901.7.5.pdf\|Figure 901.7.5]] for luminaire locations at on and off ramp areas. Lighting poles located adjacent to auxiliary lanes are placed no farther than 30 ft. from the nearest edge of the through lane. Lighting poles have a bracket rise of 5 ft. 6 in. The 45 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.		Where right of way is sufficient, lighting poles located on the outside of the roadway are to be placed outside the clear zone, but no farther than 30 ft. from the edge of travelway in order to maintain an effective utilization of the light source. Poles are to be located at a uniform distance from the roadway. Lighting poles located on the outside of ramps are to be placed a maximum of 20 ft. from the edge of the ramp’s driving lane. See [[media:901.7.5.pdf\|Figure 901.7.5]] for luminaire locations at on and off ramp areas. Lighting poles located adjacent to auxiliary lanes are placed no farther than 30 ft. from the nearest edge of the through lane. Lighting poles have a bracket rise of 5 ft. 6 in. The 45 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.
	[[image:901.7.9 AT.jpg\|right\|135px\|thumb\|<center>'''Type AT pole base'''</center>]]		[[image:901.7.9 AT.jpg\|right\|135px\|thumb\|<center>'''Type AT pole base'''</center>]]
	Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed according to [~~http~~://www.modot.~~mo.gov/business/standards_and_specs~~/~~documents~~/~~60600.pdf~~ Standard Plan 606.00]. Shaft lengths are determined from the cross-section at each pole location for pole designs 1 through 5 as shown on the plans.		Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed according to [https://www.modot.org/media/16856 Standard Plan 606.00]. Shaft lengths are determined from the cross-section at each pole location for pole designs 1 through 5 as shown on the plans.

	Type B (bridge-mounted) poles on bridge safety barrier curbs 2 ft. 8 in. tall will result in a 45 ft. mounting height above edge of travelway. Consult with Bridge to coordinate design details.		Type B (bridge-mounted) poles on bridge safety barrier curbs 2 ft. 8 in. tall will result in a 45 ft. mounting height above edge of travelway. Consult with Bridge to coordinate design details.
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	If the intersection does not have raised islands, the luminaires may be placed on the signal poles to provide silhouette discernment lighting (see [[media:901.7.2.pdf\|Figure 901.7.2]]). Each quadrant of the intersection is to be illuminated. The luminaires are to be installed directly over the mast arms or cable spans to provide the proper silhouette effect. If the intersection is located within the limits of continuous lighting meeting intensity requirements, the signal pole lighting is not required.		If the intersection does not have raised islands, the luminaires may be placed on the signal poles to provide silhouette discernment lighting (see [[media:901.7.2.pdf\|Figure 901.7.2]]). Each quadrant of the intersection is to be illuminated. The luminaires are to be installed directly over the mast arms or cable spans to provide the proper silhouette effect. If the intersection is located within the limits of continuous lighting meeting intensity requirements, the signal pole lighting is not required.

	Lighting control for 120-volt signal pole lighting or separate pole lighting is shown on [~~http~~://www.modot.~~mo.gov/business/standards_and_specs~~/~~documents~~/~~90215.pdf~~ Standard Plan 902.15]. If the capacity of this control box is exceeded or if the lighting is part of a larger system, then a 240-volt or 480-volt base-mounted control station is used. Where separate light poles and 240- and 480-volt lighting circuits are used at signalized intersections, the wiring, conduit, pull boxes and lighting control station are to be separated from the signal equipment. It is not desirable to have higher voltage lighting wiring mixed with the 120-volt signal control wiring. Signal and lighting controllers can share a power supply, but separate meters and disconnect switches will be needed (see standard plans).		Lighting control for 120-volt signal pole lighting or separate pole lighting is shown on [https://www.modot.org/media/16911 Standard Plan 902.15]. If the capacity of this control box is exceeded or if the lighting is part of a larger system, then a 240-volt or 480-volt base-mounted control station is used. Where separate light poles and 240- and 480-volt lighting circuits are used at signalized intersections, the wiring, conduit, pull boxes and lighting control station are to be separated from the signal equipment. It is not desirable to have higher voltage lighting wiring mixed with the 120-volt signal control wiring. Signal and lighting controllers can share a power supply, but separate meters and disconnect switches will be needed (see standard plans).

	==901.7.12 Control Station and Power Supply==		==901.7.12 Control Station and Power Supply==
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	Two types of lighting control systems are available for use as follows. If other types of control station designs are desired, they are to be submitted to Design for approval.		Two types of lighting control systems are available for use as follows. If other types of control station designs are desired, they are to be submitted to Design for approval.

	'''901.7.12.1 240-Volt and 480-Volt Four-Circuit Lighting Control Stations.''' These control stations are base-mounted as shown on [~~http~~://www.modot.~~mo.gov/business/standards_and_specs~~/~~documents~~/~~90130.pdf~~ Standard Plan 901.30]. These control stations also require a Type 1 or Type 2 power supply as shown on [~~http~~://www.modot.~~mo.gov/business/standards_and_specs~~/~~documents~~/~~90180.pdf~~ Standard Plan 901.80]. These power supplies can also supply power for signal controllers.		'''901.7.12.1 240-Volt and 480-Volt Four-Circuit Lighting Control Stations.''' These control stations are base-mounted as shown on [https://www.modot.org/media/16906 Standard Plan 901.30]. These control stations also require a Type 1 or Type 2 power supply as shown on [https://www.modot.org/media/16907 Standard Plan 901.80]. These power supplies can also supply power for signal controllers.

	These control stations are to be used with interchange lighting, continuous lighting and tower lighting systems. These control stations are also used with intersection lighting where the capabilities of the 120-volt control box described below are exceeded. Lighting and signal conduit systems are separate with 240- or 480-volt lighting systems. For installations requiring different voltages for lighting and signal applications, either two preformed pull boxes or one double concrete pull box, Type B, shall be used. Contractors may use the double concrete pull box, Type B, instead of two preformed pull boxes.		These control stations are to be used with interchange lighting, continuous lighting and tower lighting systems. These control stations are also used with intersection lighting where the capabilities of the 120-volt control box described below are exceeded. Lighting and signal conduit systems are separate with 240- or 480-volt lighting systems. For installations requiring different voltages for lighting and signal applications, either two preformed pull boxes or one double concrete pull box, Type B, shall be used. Contractors may use the double concrete pull box, Type B, instead of two preformed pull boxes.

	'''901.7.12.2 Power Supply with 120-Volt Lighting Control Box.''' This system incorporates a small lighting control box on a Type 1 or Type 2 power supply assembly as shown on [~~http~~://www.modot.~~mo.gov/business/standards_and_specs~~/~~documents~~/~~90215.pdf~~ Standard Plan 902.15]. With this system, lighting wiring can be incorporated into signal conduit systems.		'''901.7.12.2 Power Supply with 120-Volt Lighting Control Box.''' This system incorporates a small lighting control box on a Type 1 or Type 2 power supply assembly as shown on [https://www.modot.org/media/16911 Standard Plan 902.15]. With this system, lighting wiring can be incorporated into signal conduit systems.

	This system is to be used for lighting at both signalized and unsignalized intersections. This system can be used at intersections with signal pole lighting or separate lighting poles under the following conditions:		This system is to be used for lighting at both signalized and unsignalized intersections. This system can be used at intersections with signal pole lighting or separate lighting poles under the following conditions:

← Older revision		Revision as of 11:40, 15 February 2018
Line 5:		Line 5:
	\|'''Figures'''		\|'''Figures'''
	\|-		\|-
	\|[[media:901.7.1 ~~Luminaire Locations For lighting~~.pdf\|Fig. 901.7.1 Luminaire Locations For Lighting Island Noses]]		\|[[media:901.7.1.pdf\|Fig. 901.7.1 Luminaire Locations For Lighting Island Noses]]
	\|-		\|-
	\|[[media:901.7.2 ~~Typical Lighting for Signalized Intersections~~.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]]		\|[[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]]
	\|-		\|-
	\|[[media:901.7.3 ~~Limit Of Silhouette Discernment Lighting~~.pdf\|Fig. 901.7.3 Limit Of Silhouette Discernment Lighting]]		\|[[media:901.7.3.pdf\|Fig. 901.7.3 Limit Of Silhouette Discernment Lighting]]
	\|-		\|-
	\|[[media:901.7.4 ~~LimitOf Direct Refance Lighting~~.pdf\|Fig. 901.7.4 Limit of Direct Reflectance Lighting]]		\|[[media:901.7.4.pdf\|Fig. 901.7.4 Limit of Direct Reflectance Lighting]]
	\|-		\|-
	\|[[media:901.7.5 ~~Basis Lighting At Ramps~~.pdf\|Fig. 901.7.5 Basic Lighting at Ramps]]		\|[[media:901.7.5.pdf\|Fig. 901.7.5 Basic Lighting at Ramps]]
	\|}		\|}

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	Basic lighting at intersections, including ramp terminals at crossroads, is to provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) within the limits of the intersection.		Basic lighting at intersections, including ramp terminals at crossroads, is to provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) within the limits of the intersection.

	The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1 ~~Luminaire Locations For lighting~~.pdf\|lighting of typical island noses]] is available.		The approach noses of all divisional islands and channelizing islands with non-mountable curbs are to be lit to a minimum intensity of 0.2 fc (2.2 lux) on the vertical face of the island. Guidance for [[media:901.7.1.pdf\|lighting of typical island noses]] is available.

	Examples of lighting configurations are shown in [[media:901.1.4 (f8-01.4) Typical Basic Lighting for Signalized Interchange, Channelized Intersections and Roundabouts Using Divisional Islands.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1 ~~Typical Basic Lighting Plan for Unchannelized-~~.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2 ~~Typical Lighting for Signalized Intersections~~.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].		Examples of lighting configurations are shown in [[media:901.1.4 (f8-01.4) Typical Basic Lighting for Signalized Interchange, Channelized Intersections and Roundabouts Using Divisional Islands.pdf\|Fig. 901.1.4 Basic Lighting for Signalized Interchange, Channelized Intersections, and Roundabouts]], [[media:901.2.1.pdf\|Fig. 901.2.1 Basic Lighting for Unchannelized/Unsignalized Intersections]] and [[media:901.7.2.pdf\|Fig. 901.7.2 Typical Lighting for Signalized Intersections]].

	Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4 ~~LimitOf Direct Refance Lighting~~.pdf\|direct reflectance]] and [[media:901.7.3 ~~Limit Of Silhouette Discernment Lighting~~.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1 ~~Luminaire Locations For lighting~~.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.		Guidance showing the limits for various mounting heights and luminaire sizes for [[media:901.7.4.pdf\|direct reflectance]] and [[media:901.7.3.pdf\|silhouette discernment]] lighting is available. Proper [[media:901.7.1.pdf\|lighting of island noses]] may also dictate mounting height and luminaire size in an intersection. Mixing silhouette discernment and direct reflectance lighting is not recommended. If an intersection contains one or more divisional islands or channelizing islands with non-mountable curbs, all luminaires are to be located for direct reflectance lighting.

	Basic lighting at interchanges provides an average maintained intensity of approximately 0.6 fc (6.5 lux) or more in the areas lit. Examples of interchange lighting are shown in [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf\|Fig. 901.1.1 Basic Lighting at Diamond Interchanges]], [[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf\|Fig. 901.1.2 Directional Interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf\|Fig. 901.1.3 Cloverleaf Interchanges]]. Areas of potential vehicle conflict including exit gore areas, the ends of acceleration lanes, ramp merges, ramp diverges, weaving areas, ramp terminal intersections, etc. are to be lit.		Basic lighting at interchanges provides an average maintained intensity of approximately 0.6 fc (6.5 lux) or more in the areas lit. Examples of interchange lighting are shown in [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf\|Fig. 901.1.1 Basic Lighting at Diamond Interchanges]], [[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf\|Fig. 901.1.2 Directional Interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf\|Fig. 901.1.3 Cloverleaf Interchanges]]. Areas of potential vehicle conflict including exit gore areas, the ends of acceleration lanes, ramp merges, ramp diverges, weaving areas, ramp terminal intersections, etc. are to be lit.

	Guidance is available for [[media:901.7.5 ~~Basis Lighting At Ramps~~.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.		Guidance is available for [[media:901.7.5.pdf\|luminaire locations for typical on and off ramps]] to maintain required intensities.

	High mast lighting in complex interchanges is to provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) on all paved driving surfaces within the interchange. The areas of potential vehicle conflict as described above are lit to a maintained intensity of 0.6 fc (6.5 lux) or higher.		High mast lighting in complex interchanges is to provide an average maintained intensity of 0.6 fc (6.5 lux) and a minimum intensity of 0.2 fc (2.2 lux) on all paved driving surfaces within the interchange. The areas of potential vehicle conflict as described above are lit to a maintained intensity of 0.6 fc (6.5 lux) or higher.
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	30 ft. maximum - 15 ft. bracket arm = 15 ft. maximum setback		30 ft. maximum - 15 ft. bracket arm = 15 ft. maximum setback

	Where right of way is sufficient, lighting poles located on the outside of the roadway are to be placed outside the clear zone, but no farther than 30 ft. from the edge of travelway in order to maintain an effective utilization of the light source. Poles are to be located at a uniform distance from the roadway. Lighting poles located on the outside of ramps are to be placed a maximum of 20 ft. from the edge of the ramp’s driving lane. See [[media:901.7.5 ~~Basis Lighting At Ramps~~.pdf\|Figure 901.7.5]] for luminaire locations at on and off ramp areas. Lighting poles located adjacent to auxiliary lanes are placed no farther than 30 ft. from the nearest edge of the through lane. Lighting poles have a bracket rise of 5 ft. 6 in. The 45 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.		Where right of way is sufficient, lighting poles located on the outside of the roadway are to be placed outside the clear zone, but no farther than 30 ft. from the edge of travelway in order to maintain an effective utilization of the light source. Poles are to be located at a uniform distance from the roadway. Lighting poles located on the outside of ramps are to be placed a maximum of 20 ft. from the edge of the ramp’s driving lane. See [[media:901.7.5.pdf\|Figure 901.7.5]] for luminaire locations at on and off ramp areas. Lighting poles located adjacent to auxiliary lanes are placed no farther than 30 ft. from the nearest edge of the through lane. Lighting poles have a bracket rise of 5 ft. 6 in. The 45 ft. mounting height of the slip-fitter above the edge of travelway is attained by means of adjusting the bracket mounting plates on the shaft.
	[[image:901.7.9 AT.jpg\|right\|135px\|thumb\|<center>'''Type AT pole base'''</center>]]		[[image:901.7.9 AT.jpg\|right\|135px\|thumb\|<center>'''Type AT pole base'''</center>]]
	Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed according to [http://www.modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard Plan 606.00]. Shaft lengths are determined from the cross-section at each pole location for pole designs 1 through 5 as shown on the plans.		Type AT (ground-mounted) poles have breakaway features. Shafts do not require handholes since splices are performed in the transformer base. Poles behind guardrail, installed for purposes other than protection of lighting poles, are installed according to [http://www.modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard Plan 606.00]. Shaft lengths are determined from the cross-section at each pole location for pole designs 1 through 5 as shown on the plans.
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	==901.7.11 Signalized Intersections==		==901.7.11 Signalized Intersections==

	Lighting will be provided at all signalized intersections. All quadrants of the intersection are to be illuminated whether or not there are islands on all approaches. Lighting at signalized intersections is to provide an average maintained intensity as specified in EPG 901.7.2. If the intersection has raised channelizing islands or divisional islands, the intersection is to be illuminated by direct reflectance (see [[media:901.7.2 ~~Typical Lighting for Signalized Intersections~~.pdf\|Figure 901.7.2]]). The luminaire is to be located in front of the nose of any island in accordance with [[media:901.7.1 ~~Luminaire Locations For lighting~~.pdf\|Figure 901.7.1]]. For those approaches without raised islands, the luminaire is to be located as if an island existed on that approach. Direct reflectance and signal pole lighting are not to be mixed.		Lighting will be provided at all signalized intersections. All quadrants of the intersection are to be illuminated whether or not there are islands on all approaches. Lighting at signalized intersections is to provide an average maintained intensity as specified in EPG 901.7.2. If the intersection has raised channelizing islands or divisional islands, the intersection is to be illuminated by direct reflectance (see [[media:901.7.2.pdf\|Figure 901.7.2]]). The luminaire is to be located in front of the nose of any island in accordance with [[media:901.7.1.pdf\|Figure 901.7.1]]. For those approaches without raised islands, the luminaire is to be located as if an island existed on that approach. Direct reflectance and signal pole lighting are not to be mixed.

	At signalized ramp terminals where basic lighting along the freeway is planned or in place, lighting with separate light poles and conduit systems is recommended.		At signalized ramp terminals where basic lighting along the freeway is planned or in place, lighting with separate light poles and conduit systems is recommended.

	If the intersection does not have raised islands, the luminaires may be placed on the signal poles to provide silhouette discernment lighting (see [[media:901.7.2 ~~Typical Lighting for Signalized Intersections~~.pdf\|Figure 901.7.2]]). Each quadrant of the intersection is to be illuminated. The luminaires are to be installed directly over the mast arms or cable spans to provide the proper silhouette effect. If the intersection is located within the limits of continuous lighting meeting intensity requirements, the signal pole lighting is not required.		If the intersection does not have raised islands, the luminaires may be placed on the signal poles to provide silhouette discernment lighting (see [[media:901.7.2.pdf\|Figure 901.7.2]]). Each quadrant of the intersection is to be illuminated. The luminaires are to be installed directly over the mast arms or cable spans to provide the proper silhouette effect. If the intersection is located within the limits of continuous lighting meeting intensity requirements, the signal pole lighting is not required.

	Lighting control for 120-volt signal pole lighting or separate pole lighting is shown on [http://www.modot.mo.gov/business/standards_and_specs/documents/90215.pdf Standard Plan 902.15]. If the capacity of this control box is exceeded or if the lighting is part of a larger system, then a 240-volt or 480-volt base-mounted control station is used. Where separate light poles and 240- and 480-volt lighting circuits are used at signalized intersections, the wiring, conduit, pull boxes and lighting control station are to be separated from the signal equipment. It is not desirable to have higher voltage lighting wiring mixed with the 120-volt signal control wiring. Signal and lighting controllers can share a power supply, but separate meters and disconnect switches will be needed (see standard plans).		Lighting control for 120-volt signal pole lighting or separate pole lighting is shown on [http://www.modot.mo.gov/business/standards_and_specs/documents/90215.pdf Standard Plan 902.15]. If the capacity of this control box is exceeded or if the lighting is part of a larger system, then a 240-volt or 480-volt base-mounted control station is used. Where separate light poles and 240- and 480-volt lighting circuits are used at signalized intersections, the wiring, conduit, pull boxes and lighting control station are to be separated from the signal equipment. It is not desirable to have higher voltage lighting wiring mixed with the 120-volt signal control wiring. Signal and lighting controllers can share a power supply, but separate meters and disconnect switches will be needed (see standard plans).