905.1 Traffic Data Collection - Revision history

Smithk at 19:43, 22 November 2021

2021-11-22T19:43:22Z

← Older revision		Revision as of 14:43, 22 November 2021
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	For some traffic studies, data from TMS or interactive AADT map may be enough. For other studies, field data will be required. EPG 905.1 Traffic Data Collection shows how to “right-size data collection” based on purpose and need of study. Refer to [[905.3 Transportation Impact Analysis#905.3.3 Data Collection\|EPG 905.3.3 Data Collection]] for how to collect data in a Transportation Impact Analysis.		For some traffic studies, data from TMS or interactive AADT map may be enough. For other studies, field data will be required. EPG 905.1 Traffic Data Collection shows how to “right-size data collection” based on purpose and need of study. Refer to [[905.3 Transportation Impact Analysis#905.3.3 Data Collection\|EPG 905.3.3 Data Collection]] for how to collect data in a Transportation Impact Analysis.

	==905.1.1 [http://~~tmshome~~ Transportation Management System (TMS)]==		==905.1.1 [http://tms/home/ Transportation Management System (TMS)]==

	===905.1.1.1 [http://tms/Safety/CrashSummary.aspx Crash Summary]===		===905.1.1.1 [http://tms/Safety/CrashSummary.aspx Crash Summary]===

Smithk: Per TS, revision supports the new EPG 905.3 TIA guidance.

2021-11-15T16:23:36Z

Per TS, revision supports the new EPG 905.3 TIA guidance.

← Older revision		Revision as of 11:23, 15 November 2021
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	To perform a traffic study, certain data should be collected. A good source of data can be obtained ~~from~~ MoDOT’s Transportation Management System (TMS). ~~TMS~~ has inventories for roadway information as well as crash information. ~~For~~ some ~~traffic studies,~~ data ~~from TMS may be enough. For other studies, field~~ data ~~will be required~~. ~~The Traffic Data Collection article will show data available from TMS~~ and ~~data required from the field~~.		To perform a traffic study, certain data should be collected. A good source of data can be obtained through MoDOT’s tools, that include:
			:* [[:Category:145 Transportation Management Systems (TMS)\|Transportation Management System (TMS)]] - has inventories for roadway information as well as crash information.
			:* [https://www.modot.org/traffic-volume-maps Interactive AADT Map] – shows traffic volumes at some locations that are associated with actual count data and some data that are estimated volumes (not based on count data). This map breaks down traffic by both generalized vehicle classifications and directional, hourly volume breakdowns.

			For some traffic studies, data from TMS or interactive AADT map may be enough. For other studies, field data will be required. EPG 905.1 Traffic Data Collection shows how to “right-size data collection” based on purpose and need of study. Refer to [[905.3 Transportation Impact Analysis#905.3.3 Data Collection\|EPG 905.3.3 Data Collection]] for how to collect data in a Transportation Impact Analysis.

	==905.1.1 [http://tmshome Transportation Management System (TMS)]==		==905.1.1 [http://tmshome Transportation Management System (TMS)]==

Smithk: Updated website links for increased security

2021-10-27T12:47:15Z

Updated website links for increased security

← Older revision		Revision as of 07:47, 27 October 2021
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	[[230.2 Vertical Alignment#230.2.4 Sight Distance\|Sight Distances]] should be measured for at-grade intersections and ranges. There are four basic sight distance measurements that will be obtained:		[[230.2 Vertical Alignment#230.2.4 Sight Distance\|Sight Distances]] should be measured for at-grade intersections and ranges. There are four basic sight distance measurements that will be obtained:

	:* [~~http~~://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.5_Stopping_Sight_Distance_and_K_Factors Stopping Sight Distance]		:* [https://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.5_Stopping_Sight_Distance_and_K_Factors Stopping Sight Distance]
	:* [~~http~~://epg.modot.org/index.php?title=233.2_At-Grade_Intersections_with_Stop_and_Yield_Control#233.2.1__Intersection_Sight_Distance_Criteria Intersection Sight Distance]		:* [https://epg.modot.org/index.php?title=233.2_At-Grade_Intersections_with_Stop_and_Yield_Control#233.2.1__Intersection_Sight_Distance_Criteria Intersection Sight Distance]
	:* [~~http~~://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.6_Decision_Sight_Distance Decision Sight Distance] and		:* [https://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.6_Decision_Sight_Distance Decision Sight Distance] and
	:* [~~http~~://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.7_Passing_Sight_Distance Passing Sight Distance].		:* [https://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.7_Passing_Sight_Distance Passing Sight Distance].

	Sight distances will be measured for		Sight distances will be measured for

Smithk: Per TS, numerous minor clarifications

2020-10-14T17:10:54Z

Per TS, numerous minor clarifications

Show changes

Smithk at 20:09, 18 August 2020

2020-08-18T20:09:19Z

← Older revision		Revision as of 15:09, 18 August 2020
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	\|[http://library.modot.mo.gov/RDT/reports/Ri01046b/RDT04002.pdf Report 2004]		\|[http://library.modot.mo.gov/RDT/reports/Ri01046b/RDT04002.pdf Report 2004]
	\|-		\|-
	\|'''See also:''' [~~http~~://www.modot.~~gov~~/~~services/OR/byDate.htm Innovation Library~~]		\|'''See also:''' [https://www.modot.org/research-publications Research Publications]
	\|}		\|}
	==905.1.1 [http://tmshome Transportation Management System (TMS)]==		==905.1.1 [http://tmshome Transportation Management System (TMS)]==

Smithk: /* 905.1.2.4 Condition Diagram */ updated reference

2015-11-24T14:53:46Z

905.1.2.4 Condition Diagram: updated reference

← Older revision		Revision as of 09:53, 24 November 2015
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	===905.1.2.4 Condition Diagram===		===905.1.2.4 Condition Diagram===
	As mentioned in the HAL ~~Manual~~, the Condition Diagram is a drawing (to scale, if practical), of the existing roadway, control device locations and major features in the nearby environment.		As mentioned in [[907.5 S-HAL\|the S-HAL]], the Condition Diagram is a drawing (to scale, if practical), of the existing roadway, control device locations and major features in the nearby environment.

	===905.1.2.5 Sight Distance Measurements===		===905.1.2.5 Sight Distance Measurements===

Smithk at 16:02, 25 November 2013

2013-11-25T16:02:08Z

← Older revision		Revision as of 11:02, 25 November 2013
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	:* [[233.4 At-Grade Intersections with Signal Control\|At-grade intersections with Signal Control]].		:* [[233.4 At-Grade Intersections with Signal Control\|At-grade intersections with Signal Control]].

	If sight distance is being reviewed due to an entrance permit, refer to [[[[:Category:941 Permits and Access Requests#941.7 Sight Distance for Entrances\|EPG 941.7 Sight Distance for Entrances]].		If sight distance is being reviewed due to an entrance permit, refer to [[:Category:941 Permits and Access Requests#941.7 Sight Distance for Entrances\|EPG 941.7 Sight Distance for Entrances]].

	===905.1.2.6 Measuring Degree of Curvature===		===905.1.2.6 Measuring Degree of Curvature===

Smithk: Per Traffic, updated link

2013-11-25T15:59:42Z

Per Traffic, updated link

← Older revision		Revision as of 10:59, 25 November 2013
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	:* [[233.4 At-Grade Intersections with Signal Control\|At-grade intersections with Signal Control]].		:* [[233.4 At-Grade Intersections with Signal Control\|At-grade intersections with Signal Control]].

	If sight distance is being reviewed due to an entrance permit, refer to [[941.19 Sight Distance for Entrances\|EPG 941.19 Sight Distance for Entrances]].		If sight distance is being reviewed due to an entrance permit, refer to [[[[:Category:941 Permits and Access Requests#941.7 Sight Distance for Entrances\|EPG 941.7 Sight Distance for Entrances]].

	===905.1.2.6 Measuring Degree of Curvature===		===905.1.2.6 Measuring Degree of Curvature===

Smithk: updated link

2012-01-19T18:28:24Z

updated link

← Older revision		Revision as of 13:28, 19 January 2012
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	===905.1.2.6 Measuring Degree of Curvature===		===905.1.2.6 Measuring Degree of Curvature===
	Sometimes horizontal degrees of curvature are used to make engineering decisions. An example is the article on [[903.6 Warning Signs#903.6.11 Chevron Alignment Sign (W1-8) (MUTCD Section 2C.10)\|chevron placement]]. By using equations involving the curve’s radius, LC (length of chord), degree of curve, and middle ordinate, a relationship can be calculated. The relationship assumes a chord length of 62 ft. By using a chord length of 62 ft., the middle ordinate (measured in inches) equals the degree of curvature, thus a simple field check using a 62 ft. length of rope can be used to measure the degree of curvature.		Sometimes horizontal degrees of curvature are used to make engineering decisions. An example is the article on [[903.6 Warning Signs#903.6.11 Chevron Alignment Sign (W1-8) (MUTCD Section 2C.09)\|chevron placement]]. By using equations involving the curve’s radius, LC (length of chord), degree of curve, and middle ordinate, a relationship can be calculated. The relationship assumes a chord length of 62 ft. By using a chord length of 62 ft., the middle ordinate (measured in inches) equals the degree of curvature, thus a simple field check using a 62 ft. length of rope can be used to measure the degree of curvature.

Smithk: /* 905.1.2.5 Sight Distance Measurements */ Added links, per Traffic

2011-07-05T17:14:08Z

905.1.2.5 Sight Distance Measurements: Added links, per Traffic

← Older revision		Revision as of 12:14, 5 July 2011
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	[[230.2 Vertical Alignment#230.2.4 Sight Distance\|Sight Distances]] should be measured for at-grade intersections and ranges. There are four basic sight distance measurements that will be obtained:		[[230.2 Vertical Alignment#230.2.4 Sight Distance\|Sight Distances]] should be measured for at-grade intersections and ranges. There are four basic sight distance measurements that will be obtained:

	:* Stopping Sight Distance		:* [http://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.5_Stopping_Sight_Distance_and_K_Factors Stopping Sight Distance]
	:* Entering Sight Distance		:* [http://epg.modot.org/index.php?title=233.2_At-Grade_Intersections_with_Stop_and_Yield_Control#233.2.1__Intersection_Sight_Distance_Criteria Entering Sight Distance]
	:* Decision Sight Distance and		:* [http://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.6_Decision_Sight_Distance Decision Sight Distance] and
	:* Passing Sight Distance.		:* [http://epg.modot.org/index.php?title=230.2_Vertical_Alignment#230.2.7_Passing_Sight_Distance Passing Sight Distance].

	Sight distances will be measured for		Sight distances will be measured for