620.5 Delineators (MUTCD Chapter 3F) - Revision history

Smithk: Per TS, numerous clarifications

2020-09-03T14:25:08Z

Per TS, numerous clarifications

Smithk: /* 620.5.5 Guardrail Delineation */

2019-06-07T14:17:18Z

620.5.5 Guardrail Delineation

← Older revision		Revision as of 09:17, 7 June 2019
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	==620.5.5 Guardrail Delineation==		==620.5.5 Guardrail Delineation==
	[[image:620.4.5.jpg\|right\|85px]]		[[image:620.4.5.jpg\|right\|85px]]
	'''Standard.''' All guardrail shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [~~http~~://modot.~~mo.gov~~/~~business~~/~~standards_and_specs/documents/60600.pdf~~ Standard Plan 606.00] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.		'''Standard.''' All guardrail shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [https://www.modot.org/media/16856 Standard Plan 606.00] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.

	On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.		On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.

Smithk: updated link

2019-06-07T14:16:24Z

updated link

← Older revision		Revision as of 09:16, 7 June 2019
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	\|'''Standard Plan'''		\|'''Standard Plan'''
	\|-		\|-
	\|[~~http~~://modot.~~mo.gov~~/~~business~~/~~standards_and_specs/documents/90303.pdf~~ 903.00 Sheets 8 and 9]		\|[https://www.modot.org/media/16921 903.03 Sheets 8 and 9]
	\|}		\|}

Smithk: /* 620.5.6 Barrier Wall Delineation */ Per BR, minor correction

2016-09-22T17:34:16Z

620.5.6 Barrier Wall Delineation: Per BR, minor correction

← Older revision		Revision as of 12:34, 22 September 2016
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	==620.5.6 Barrier Wall Delineation==		==620.5.6 Barrier Wall Delineation==
	'''Standard.''' Permanent barrier walls and bridge barrier walls shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 617.30 of the Standard Specifications]. The design of barrier wall delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/61710.pdf Standard ~~Drawing~~ 617.10] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the barrier delineators shall match the color of the adjacent edgeline.		'''Standard.''' Permanent barrier walls and bridge barrier walls shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 617.30 of the Standard Specifications]. The design of barrier wall delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/61710.pdf Standard Plan 617.10] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the barrier delineators shall match the color of the adjacent edgeline.

	'''Guidance.''' Where there is traffic on both sides of a barrier wall, a two sided delineator with retroreflective sheeting on both sides, should be used. On two-lane roads the bridge barrier walls should be delineated with white retroreflective sheeting on both sides of the delineator.		'''Guidance.''' Where there is traffic on both sides of a barrier wall, a two sided delineator with retroreflective sheeting on both sides, should be used. On two-lane roads the bridge barrier walls should be delineated with white retroreflective sheeting on both sides of the delineator.

Smithk: /* 620.5.5 Guardrail Delineation */ Per BR, minor correction

2016-09-22T17:33:53Z

620.5.5 Guardrail Delineation: Per BR, minor correction

← Older revision		Revision as of 12:33, 22 September 2016
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	==620.5.5 Guardrail Delineation==		==620.5.5 Guardrail Delineation==
	[[image:620.4.5.jpg\|right\|85px]]		[[image:620.4.5.jpg\|right\|85px]]
	'''Standard.''' All guardrail shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard ~~Drawing~~ 606.00] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.		'''Standard.''' All guardrail shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard Plan 606.00] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.

	On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.		On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.

Smithk: updated links

2016-06-09T15:23:24Z

updated links

← Older revision		Revision as of 10:23, 9 June 2016
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	==620.5.5 Guardrail Delineation==		==620.5.5 Guardrail Delineation==
	[[image:620.4.5.jpg\|right\|85px]]		[[image:620.4.5.jpg\|right\|85px]]
	'''Standard.''' All guardrail shall be delineated in accordance with [http://modot.~~mo.gov~~/business/standards_and_specs/~~Sec0606~~.pdf Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard Drawing 606.00] and [http://modot.~~mo.gov~~/business/standards_and_specs/~~Sec1065~~.pdf Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.		'''Standard.''' All guardrail shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard Drawing 606.00] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.

	On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.		On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.
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	==620.5.6 Barrier Wall Delineation==		==620.5.6 Barrier Wall Delineation==
	'''Standard.''' Permanent barrier walls and bridge barrier walls shall be delineated in accordance with [http://modot.~~mo.gov~~/business/standards_and_specs/~~Sec0617~~.pdf Section 617.30 of the Standard Specifications]. The design of barrier wall delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/61710.pdf Standard Drawing 617.10] and [http://modot.~~mo.gov~~/business/standards_and_specs/~~Sec1065~~.pdf Sec 1065]. The color of the barrier delineators shall match the color of the adjacent edgeline.		'''Standard.''' Permanent barrier walls and bridge barrier walls shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 617.30 of the Standard Specifications]. The design of barrier wall delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/61710.pdf Standard Drawing 617.10] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the barrier delineators shall match the color of the adjacent edgeline.

	'''Guidance.''' Where there is traffic on both sides of a barrier wall, a two sided delineator with retroreflective sheeting on both sides, should be used. On two-lane roads the bridge barrier walls should be delineated with white retroreflective sheeting on both sides of the delineator.		'''Guidance.''' Where there is traffic on both sides of a barrier wall, a two sided delineator with retroreflective sheeting on both sides, should be used. On two-lane roads the bridge barrier walls should be delineated with white retroreflective sheeting on both sides of the delineator.

Smithk: Per Traffic, revision to bring policy into substantial compliance with the 2009 MUTCD.

2012-01-18T19:20:16Z

Per Traffic, revision to bring policy into substantial compliance with the 2009 MUTCD.

Show changes

Smithk: 620.4 Delineators (MUTCD Chapter 3D) moved to 620.5 Delineators (MUTCD Chapter 3F): Per traffic, revision to bring policy into substantial compliance with 2009 MUTCD

2012-01-18T19:18:59Z

620.4 Delineators (MUTCD Chapter 3D) moved to 620.5 Delineators (MUTCD Chapter 3F): Per traffic, revision to bring policy into substantial compliance with 2009 MUTCD

← Older revision	Revision as of 14:18, 18 January 2012
(No difference)

Smithk: Removed metric values, per TR

2010-04-12T19:28:15Z

Removed metric values, per TR

← Older revision		Revision as of 14:28, 12 April 2010
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	==620.4.2 Delineator Design (MUTCD Section 3D.02)==		==620.4.2 Delineator Design (MUTCD Section 3D.02)==

	'''Standard.''' Delineators shall be retroreflective devices mounted above the roadway surface and along the side of the roadway in a series to indicate the alignment of the roadway. Delineators shall consist of retroreflector units that are capable of clearly retroreflecting light under normal atmospheric conditions from a distance of 1,000 ft. ~~(300 m)~~ when illuminated by the high beams of standard automobile lights.		'''Standard.''' Delineators shall be retroreflective devices mounted above the roadway surface and along the side of the roadway in a series to indicate the alignment of the roadway. Delineators shall consist of retroreflector units that are capable of clearly retroreflecting light under normal atmospheric conditions from a distance of 1,000 ft. when illuminated by the high beams of standard automobile lights.

	Retroreflective elements for delineators shall have a minimum dimension of 3 ~~in. (75 mm)~~.		Retroreflective elements for delineators shall have a minimum dimension of 3 inches.

	'''Option.''' Elongated retroreflective units of appropriate size may be used in place of two retroreflectors mounted as a unit.		'''Option.''' Elongated retroreflective units of appropriate size may be used in place of two retroreflectors mounted as a unit.
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	==620.4.4 Delineator Placement and Spacing (MUTCD Section 3D.04)==		==620.4.4 Delineator Placement and Spacing (MUTCD Section 3D.04)==

	'''Guidance.''' Delineators should be mounted on suitable supports so that the top of the highest retroreflector is 4 ft. ~~(1.2 m)~~ above the near roadway edge as shown in [[#Standard Mounting Height for Delineators\|Standard Mounting Height for Delineators]]. They should be placed 2 to 8 ft. ~~(0.6 to 2.4 m)~~ outside the outer edge of the shoulder, or if appropriate, in line with the roadside barrier that is 8 ft. ~~(2.4 m)~~ or less outside the outer edge of the shoulder.		'''Guidance.''' Delineators should be mounted on suitable supports so that the top of the highest retroreflector is 4 ft. above the near roadway edge as shown in [[#Standard Mounting Height for Delineators\|Standard Mounting Height for Delineators]]. They should be placed 2 to 8 ft. outside the outer edge of the shoulder, or if appropriate, in line with the roadside barrier that is 8 ft. or less outside the outer edge of the shoulder.

	Delineators should be placed at a constant distance from the edge of the roadway, except that where an obstruction intrudes into the space between the pavement edge and the extension of the line of the delineators, the delineators should be transitioned to be in line with or inside the innermost edge of the obstruction. If the obstruction is a guardrail, the delineators should be transitioned to be either just behind, directly above (in line with), or on the innermost edge of the guardrail. If the guardrail has guardrail delineators installed, the channel post mounted delienator should be deleted.		Delineators should be placed at a constant distance from the edge of the roadway, except that where an obstruction intrudes into the space between the pavement edge and the extension of the line of the delineators, the delineators should be transitioned to be in line with or inside the innermost edge of the obstruction. If the obstruction is a guardrail, the delineators should be transitioned to be either just behind, directly above (in line with), or on the innermost edge of the guardrail. If the guardrail has guardrail delineators installed, the channel post mounted delienator should be deleted.

	Delineators should be spaced 200 to 530 ft. ~~(60 to 159 m)~~ apart on mainline tangent sections. Delineators should be spaced 100 ft. ~~(30 m)~~ apart on ramp tangent sections.		Delineators should be spaced 200 to 530 ft. apart on mainline tangent sections. Delineators should be spaced 100 ft. apart on ramp tangent sections.

	'''Support.''' Examples of delineator installations are shown in [[#Examples of Delineator Placement (MUTCD Fig. 3D-1)\|Examples of Delineator Placement (MUTCD Fig. 3D-1)]].		'''Support.''' Examples of delineator installations are shown in [[#Examples of Delineator Placement (MUTCD Fig. 3D-1)\|Examples of Delineator Placement (MUTCD Fig. 3D-1)]].
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	'''Guidance.''' The spacing of delineators should be adjusted on approaches to and throughout horizontal curves so that several delineators are always simultaneously visible to the road user. The approximate spacing shown in the Approximate Spacing for Delineators on Horizontal Curves Table.		'''Guidance.''' The spacing of delineators should be adjusted on approaches to and throughout horizontal curves so that several delineators are always simultaneously visible to the road user. The approximate spacing shown in the Approximate Spacing for Delineators on Horizontal Curves Table.

	{\| border="1" class="wikitable" style="margin: 1em auto 1em auto"		{\| border="1" class="wikitable" style="margin: 1em auto 1em auto" style="text-align:center"
	\|+ '''Approximate Spacing for Delineators on Horizontal Curves'''		\|+ '''Approximate Spacing for Delineators on Horizontal Curves'''
	!style="background:#BEBEBE"\|Radius of Curve, R ft. ~~(m)~~\|\|style="background:#BEBEBE"\|Approximate Spacing on Curve, S ft. ~~(m)~~		!style="background:#BEBEBE"\|Radius of Curve, R ft. \|\|style="background:#BEBEBE"\|Approximate Spacing on Curve, S ft.
	\|-		\|-
	\| 50 ~~(15)~~ \|\| 20 ~~(6)~~		\| 50 \|\| 20
	\|-		\|-
	\| 115 ~~(34.5)~~ \|\| 25 ~~(7.5)~~		\| 115 \|\| 25
	\|-		\|-
	\| 180 ~~(54)~~ \|\| 35 ~~(10.5)~~		\| 180 \|\| 35
	\|-		\|-
	\| 250 ~~(75)~~ \|\| 40 ~~(12)~~		\| 250 \|\| 40
	\|-		\|-
	\| 300 ~~(90)~~ \|\| 50 ~~(15)~~		\| 300 \|\| 50
	\|-		\|-
	\| 400 ~~(120)~~ \|\| 55 ~~(16.5)~~		\| 400 \|\| 55
	\|-		\|-
	\| 500 ~~(150)~~ \|\| 65 ~~(19.5)~~		\| 500 \|\| 65
	\|-		\|-
	\| 600 ~~(180)~~ \|\| 70 ~~(21)~~		\| 600 \|\| 70
	\|-		\|-
	\| 700 ~~(210)~~ \|\| 75 ~~(22.5)~~		\| 700 \|\| 75
	\|-		\|-
	\| 800 ~~(240)~~ \|\| 80 ~~(24)~~		\| 800 \|\| 80
	\|-		\|-
	\| 900 ~~(270)~~ \|\| 85 ~~(25.5)~~		\| 900 \|\| 85
	\|-		\|-
	\| 1,000 ~~(300)~~ \|\| 90 ~~(27)~~		\| 1,000 \|\| 90
	\|-		\|-
	\| colspan="2" \| Distances were rounded to the nearest 5 ft. ~~(1.5 m)~~		\| colspan="2" \| Distances were rounded to the nearest 5 ft.
	\|}		\|}

	{\| border="1" class="wikitable" style="margin: 1em auto 1em auto"		{\| border="1" class="wikitable" style="margin: 1em auto 1em auto"
	\|-		\|-
	\| Spacing for specific radii may be interpolated from table. The minimum spacing should be 20 ~~ft. (6 m)~~. The spacing on curves should not exceed 300 ~~ft. (90 m)~~. In advance of or beyond a curve, and proceeding away from the end of the curve, the spacing of the first delineator is 2S, the second 3S, and the third 6S but not to exceed 300 ~~ft. (90 m)~~. S refers to the delineator spacing for specific radii computed from the formula <math>S=3\sqrt{R-50}</math> (Formula applies to measurements in feet only).		\| Spacing for specific radii may be interpolated from table. The minimum spacing should be 20 feet. The spacing on curves should not exceed 300 feet. In advance of or beyond a curve, and proceeding away from the end of the curve, the spacing of the first delineator is 2S, the second 3S, and the third 6S but not to exceed 300 feet. S refers to the delineator spacing for specific radii computed from the formula <math>S=3\sqrt{R-50}</math> (Formula applies to measurements in feet only).
	\|-		\|-
	\|}		\|}

Smithk: /* 620.4.5 Guardrail Delineation */Per Bridge and Traffic, two-lane two-way verbiage clarified

2010-03-18T12:43:26Z

620.4.5 Guardrail Delineation: Per Bridge and Traffic, two-lane two-way verbiage clarified

← Older revision		Revision as of 07:43, 18 March 2010
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	'''Standard.''' All guardrail shall be delineated in accordance with [http://modot.mo.gov/business/standards_and_specs/Sec0606.pdf Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard Drawing 606.00] and [http://modot.mo.gov/business/standards_and_specs/Sec1065.pdf Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.		'''Standard.''' All guardrail shall be delineated in accordance with [http://modot.mo.gov/business/standards_and_specs/Sec0606.pdf Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [http://modot.mo.gov/business/standards_and_specs/documents/60600.pdf Standard Drawing 606.00] and [http://modot.mo.gov/business/standards_and_specs/Sec1065.pdf Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.

	~~'''Guidance.'''~~ On two lane roads the guardrail ~~at the end of bridge approaches should~~ be delineated with white retroreflecitve sheeting on both sides of the delineator.		On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.

	'''Standard.''' If guardrail is present at off ramps, the back side of the guardrail delineator shall be red retroreflective sheeting. The red sheeting is used on the back side of guardrail delineators from the crossroad to the start of the deceleration lane on the main line.		'''Standard.''' If guardrail is present at off ramps, the back side of the guardrail delineator shall be red retroreflective sheeting. The red sheeting is used on the back side of guardrail delineators from the crossroad to the start of the deceleration lane on the main line.

← Older revision		Revision as of 09:25, 3 September 2020
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	\|'''Standard Plan'''		\|'''Standard Plan'''
	\|-		\|-
	\|[https://www.modot.org/media/16921 903.03 Sheets ~~8 and 9~~]		\|[https://www.modot.org/media/16921 903.03 Sheets 11 - 14]
	\|}		\|}

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	::2. Roadside delineators are used to lead into all curves.		::2. Roadside delineators are used to lead into all curves.
	:B. On sections of roadways where continuous lighting is in operation between interchanges.		:B. On sections of roadways where continuous lighting is in operation between interchanges.
	:C. On interstate or other highways with [[903.~~8 Freeway and Expressway Guide~~ Signs#903.8.64 Emergency Reference Markers (D10-5~~) (MUTCD Section 2E.54~~)\|EPG 903.8.64 Emergency Reference Markers (D10-5)]].		:C. On interstate or other highways with [[903.9 General Information Signs#903.9.4 Emergency Reference Markers (D10-5)\|EPG 903.9.4 Emergency Reference Markers (D10-5)]].

	'''Option.''' Delineators may be provided on other classes of roads. A series of single delineators may be provided on the left side of roadways.		'''Option.''' Delineators may be provided on other classes of roads. A series of single delineators may be provided on the left side of roadways.
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	Delineators of the appropriate color may be used to indicate a lane reduction transition where either an outside or inside lane merges into an adjacent lane.		Delineators of the appropriate color may be used to indicate a lane reduction transition where either an outside or inside lane merges into an adjacent lane.

	'''Guidance.''' When used for lane reduction transitions, the delineators should be installed adjacent to the lane or lanes reduced for the full length of the transition and should be so placed and spaced to show the reduction (see [[620.2 Pavement and Curb Markings (MUTCD Chapter 3B)#Fig. 620.2.5.11\|Fig. 620.2.5.11]]).		'''Guidance.''' When used for lane reduction transitions, the delineators should be installed adjacent to the lane or lanes reduced for the full length of the transition and should be so placed and spaced to show the reduction (see [[620.2 Pavement and Curb Markings (MUTCD Chapter 3B)#Fig. Fig. 620.2.9.1\|Fig. Fig. 620.2.9.1]]).

	'''Support.''' Delineators are not necessary for traffic moving in the direction of a wider pavement or on the side of the roadway where the alignment is not affected by the lane reduction transition.		'''Support.''' Delineators are not necessary for traffic moving in the direction of a wider pavement or on the side of the roadway where the alignment is not affected by the lane reduction transition.
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	==620.5.4 Delineator Placement and Spacing (MUTCD Section 3F.04)==		==620.5.4 Delineator Placement and Spacing (MUTCD Section 3F.04)==

	'''Guidance.''' Delineators should be mounted on suitable supports at a mount height, measured vertically from the bottom of the lowest retroreflective device to the elevation of the near edge of the roadway, of approximately 4 ft. ~~as shown in~~ [~~[#Fig~~. ~~620~~.~~6.4.3\|Fig. 620.5.4.3,~~ Standard ~~Mounting Height for Delineators]~~].		'''Guidance.''' Delineators should be mounted on suitable supports at a mount height, measured vertically from the bottom of the lowest retroreflective device to the elevation of the near edge of the roadway, of approximately 4 ft., see [https://www.modot.org/standard-plans-section-900 Standard Plans 903].

	'''Option.''' When mounted on the face of or on top of guardrails or other longitudinal barriers, delineators may be mounted at a lower elevation than the normal delineator height recommended in the preceding paragraph.		'''Option.''' When mounted on the face of or on top of guardrails or other longitudinal barriers, delineators may be mounted at a lower elevation than the normal delineator height recommended in the preceding paragraph.
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	Delineators should be placed 2 to 8 ft. outside the outer edge of the shoulder, or if appropriate, in line with the roadside barrier that is 8 ft. or less outside the outer edge of the shoulder.		Delineators should be placed 2 to 8 ft. outside the outer edge of the shoulder, or if appropriate, in line with the roadside barrier that is 8 ft. or less outside the outer edge of the shoulder.

	Delineators should be placed at a constant distance from the edge of the roadway, except that where an obstruction intrudes into the space between the pavement edge and the extension of the line of the delineators~~, the~~ delineators should be transitioned to be in line with or inside the innermost edge of the obstruction. If the obstruction is a guardrail or other longitudinal barrier, the delineators should be transitioned to be just behind, directly above (in line with), or on the innermost edge of the guardrail or longitudinal barrier. ~~If the guardrail has guardrail delineators installed, the channel~~ post mounted ~~delineator~~ should be ~~deleted~~.		Delineators should be placed at a constant distance from the edge of the roadway, except that where an obstruction intrudes into the space between the pavement edge and the extension of the line of the delineators. The delineators should be transitioned to be in line with or inside the innermost edge of the obstruction. If the obstruction is a guardrail or other longitudinal barrier, the delineators should be transitioned to be just behind, directly above (in line with), or on the innermost edge of the guardrail or longitudinal barrier. Channel post mounted delineators should not be installed behind guardrail if guardrail delineation is present.

	Delineators should be spaced 200 ft. to 530 ft. apart on mainline tangent sections. Delineators should be spaced 100 ft. apart on ramp tangent sections.		Delineators should be spaced 200 ft. to 530 ft. apart on mainline tangent sections. Delineators should be spaced 100 ft. apart on ramp tangent sections.
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	Delineators may be transitioned in advance of a lane transition or obstruction as a guide for oncoming traffic.		Delineators may be transitioned in advance of a lane transition or obstruction as a guide for oncoming traffic.

	'''Guidance.''' The spacing of delineators should be adjusted on approaches to and throughout horizontal curves so that several delineators are always simultaneously visible to the road user. The approximate spacing shown in the Approximate Spacing for Delineators on Horizontal Curves Table.		'''Guidance.''' The spacing of delineators should be adjusted on approaches to and throughout horizontal curves so that several delineators are always simultaneously visible to the road user. The approximate spacing is shown in the Approximate Spacing for Delineators on Horizontal Curves Table.

	{\| border="1" class="wikitable" style="margin: 1em auto 1em auto" style="text-align:center" align="center"		{\| border="1" class="wikitable" style="margin: 1em auto 1em auto" style="text-align:center" align="center"
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	<div id="Fig. 620.6.4.2"></div>		<div id="Fig. 620.6.4.2"></div>
	[[Image:620.6.4.2.jpg\|thumb\|center\|700px\|<center>'''Fig. 620.5.4.2, Installation of Delineators on Public Side Roads and Private Entrances'''</center>]]		[[Image:620.6.4.2.jpg\|thumb\|center\|700px\|<center>'''Fig. 620.5.4.2, Installation of Delineators on Public Side Roads and Private Entrances'''</center>]]

	~~<div id="Fig. 620.6.4.3"></div>~~
	~~[[Image:620.6.4.3.jpg\|thumb\|center\|700px\|<center>'''Fig. 620.5.4.3, Standard Mounting Height for Delineators'''</center>]]~~

	==620.5.5 Guardrail Delineation==		==620.5.5 Guardrail Delineation==
	[[image:620.4.5.jpg\|right\|85px]]		[[image:620.4.5.jpg\|right\|85px]]
	'''Standard.''' All guardrail shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [https://www.modot.org/~~media/16856~~ Standard ~~Plan 606.00~~] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.		'''Standard.''' All guardrail shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 606.10.2.3 of the Standard Specifications]. The design of the guardrail delineators shall be in accordance with [https://www.modot.org/standard-plans-section-900 Standard Plans 903] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Standard Specification Sec 1065]. The color of the retroreflective sheeting used shall match the color of the adjacent edgeline. If no edgeline is present, white shall be used on the right side facing approaching traffic.

	On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.		On two-lane roads with two-way traffic the guardrail shall be delineated with white retroreflecitve sheeting on both sides of the delineator, including at bridge approaches.
Line 150:		Line 147:

	==620.5.6 Barrier Wall Delineation==		==620.5.6 Barrier Wall Delineation==
	'''Standard.''' Permanent barrier walls and bridge barrier walls shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 617.30 of the Standard Specifications]. The design of barrier wall delineators shall be in accordance with [~~http~~://modot.~~mo.gov/business/standards_and_specs~~/~~documents~~/~~61710.pdf~~ Standard Plan ~~617~~.10] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1065]. The color of the barrier delineators shall match the color of the adjacent edgeline.		'''Standard.''' Permanent barrier walls and bridge barrier walls shall be delineated in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Section 617.30 of the Standard Specifications]. The design of barrier wall delineators shall be in accordance with [https://www.modot.org/media/16921 Standard Plan 903.03] and [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Standard Specification Sec 1065]. The color of the barrier delineators shall match the color of the adjacent edgeline.

	'''Guidance.''' Where there is traffic on both sides of a barrier wall, a two sided delineator with retroreflective sheeting on both sides, should be used. On two-lane roads the bridge barrier walls should be delineated with white retroreflective sheeting on both sides of the delineator.		'''Guidance.''' Where there is traffic on both sides of a barrier wall, a two sided delineator with retroreflective sheeting on both sides, should be used. On two-lane roads the bridge barrier walls should be delineated with white retroreflective sheeting on both sides of the delineator.

	'''Standard.''' If barrier wall is present at off ramps, the back side of the barrier wall delineator shall be red retroreflective sheeting. The red sheeting is used on the back side of barrier wall delineators from the crossroad to the start of the deceleration lane on the main line.		'''Standard.''' If a barrier wall is present at off ramps, the back side of the barrier wall delineator shall be red retroreflective sheeting. The red sheeting is used on the back side of barrier wall delineators from the crossroad to the start of the deceleration lane on the main line.

	'''Option.''' The use of the red sheeting on the back side of barrier wall delineators may be used wherever there is a need to discourage wrong way driving.		'''Option.''' The use of the red sheeting on the back side of barrier wall delineators may be used wherever there is a need to discourage wrong way driving.

	[[Category:620 Pavement Marking\|620.05]]		[[Category:620 Pavement Marking\|620.05]]