Category:902 Signals (MUTCD Part 4) - Revision history

Hoskir: added category link

2026-01-06T15:56:08Z

added category link

← Older revision		Revision as of 10:56, 6 January 2026
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	There are many aspects to be considered when inspecting construction quality and this article provides [[902.19 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.20 Material Inspection for Sec 902\|guidelines for material inspections]].		There are many aspects to be considered when inspecting construction quality and this article provides [[902.19 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.20 Material Inspection for Sec 902\|guidelines for material inspections]].


			[[Category:900 TRAFFIC CONTROL]]

Hoskir: Updated due to MUTCD changes (See Special Ballot)

2026-01-05T21:37:51Z

Updated due to MUTCD changes (See Special Ballot)

← Older revision		Revision as of 16:37, 5 January 2026
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	Traffic signals are electrically powered traffic control devices that warn or direct vehicular and pedestrian traffic to take some specific action. Traffic signals provide for the orderly assignment of right of way to conflicting traffic movements at intersections.		Traffic signals are electrically powered traffic control devices that warn or direct vehicular and pedestrian traffic to take some specific action. Traffic signals provide for the orderly assignment of right of way to conflicting traffic movements at intersections.

	Traffic signals are not a complete solution for traffic problems. Traffic signals can ~~sometime~~ create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C)\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.5 Coordination\|Coordinating]] and [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.36 Signal Timing\|timing signals]] are very important.		Traffic signals are not a complete solution for traffic problems. Traffic signals can sometimes create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C)\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.5 Coordination\|Coordinating]] and [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.36 Signal Timing\|timing signals]] are very important.

	Traffic signals are listed on the [[121.3 The Statewide Transportation Improvement Program (STIP)\|Statewide Transportation Improvement Program (STIP)]] in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.		Traffic signals are listed on the [[121.3 The Statewide Transportation Improvement Program (STIP)\|Statewide Transportation Improvement Program (STIP)]] in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.
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	\|-		\|-
	\|[[media:900 Traffic Signals.pdf\|Traffic Signals]]		\|[[media:900 Traffic Signals.pdf\|Traffic Signals]]
	\|}		\|}
	The policies, standards and guidelines set forth herein are in general accordance with [http://mutcd.fhwa.dot.gov/index.htm the ''Manual on Uniform Traffic Control Devices''] most recent edition and the subsequent rulings on requests for interpretations, changes, and experimentation, herein referred to as the ''MUTCD''. Clarification, elaboration, or the elimination of options of the individual items, is contained herein so that conformity of application will be promoted in Missouri.

	There are many aspects to be considered when inspecting construction quality and this article provides [[902.19 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.20 Material Inspection for Sec 902\|guidelines for material inspections]].		There are many aspects to be considered when inspecting construction quality and this article provides [[902.19 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.20 Material Inspection for Sec 902\|guidelines for material inspections]].

	~~This article also has a [[902.18 Glossary\|glossary]].~~

	~~===Nonstandard Structures===~~
	~~{\|style="padding: 0.3em; margin-right:7px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#ffddcc" width="210px" align="right"~~
	\|-
	~~\|'''Adaptive Traffic Signals'''~~
	\|-
	~~\|[http://library.modot.mo.gov/RDT/reports/Ri08026/or10020.pdf Evaluation of an Adaptive Traffic Signal System: Route 291 in Lee's Summit]~~
	\|-
	~~\|'''See also:''' [https://www.modot.org/research-publications Research Publications]~~
	\|}

	If any lighting installation being considered will use a special or nonstandard structure or with dimensions exceeding those shown in the Standard Plans, [http://sharepoint/systemdelivery/tr/Pages/default.aspx Traffic] and [http://sharepoint/systemdelivery/br/pages/default.aspx Bridge] are to be consulted early in the project planning regarding the installation’s feasibility and necessary contract provisions. Examples of this situation are [[901.7 Light Source and Intensity#901.7.6 High Mast Lighting\|high mast lighting]] and exceeding lengths on the Standard Plans.

	Since designing details for nonstandard installations is typically performed by an outside engineer employed by the contractor or producer and is certified to MoDOT, the project contract documents must include appropriate requirements about the design standards used. Since structures beyond MoDOT's standard designs are involved, a performance-based specification of the design signed and sealed by a Missouri Registered Professional Engineer is needed from the contractor. Certification to the current AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic Signals including the latest fatigue provisions is required.

Hoskir: Hoskir moved page Category:902 Signals to Category:902 Signals (MUTCD Part 4): renamed due to MUTCD Update (See Special Ballot)

2026-01-05T21:37:21Z

Hoskir moved page Category:902 Signals to Category:902 Signals (MUTCD Part 4): renamed due to MUTCD Update (See Special Ballot)

← Older revision	Revision as of 16:37, 5 January 2026
(No difference)

Smithk: Per TS, minor clarifications

2020-08-18T19:52:59Z

Per TS, minor clarifications

← Older revision		Revision as of 14:52, 18 August 2020
Line 5:		Line 5:
	Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C)\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.5 Coordination\|Coordinating]] and [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.36 Signal Timing\|timing signals]] are very important.		Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C)\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.5 Coordination\|Coordinating]] and [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.36 Signal Timing\|timing signals]] are very important.

	Traffic signals are listed on the ~~Highway Right of Way and Construction~~ Program in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.		Traffic signals are listed on the [[121.3 The Statewide Transportation Improvement Program (STIP)\|Statewide Transportation Improvement Program (STIP)]] in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.

	{\|style="padding: 0.3em; margin-right:10px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="left"		{\|style="padding: 0.3em; margin-right:10px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="left"
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	\|[http://library.modot.mo.gov/RDT/reports/Ri08026/or10020.pdf Evaluation of an Adaptive Traffic Signal System: Route 291 in Lee's Summit]		\|[http://library.modot.mo.gov/RDT/reports/Ri08026/or10020.pdf Evaluation of an Adaptive Traffic Signal System: Route 291 in Lee's Summit]
	\|-		\|-
	\|'''See also:''' [~~http~~://www.modot.~~gov~~/~~services/OR/byDate.htm Innovation Library~~]		\|'''See also:''' [https://www.modot.org/research-publications Research Publications]
	\|}		\|}

Smithk: /* Nonstandard Structures */

2018-09-24T15:36:41Z

Nonstandard Structures

← Older revision		Revision as of 10:36, 24 September 2018
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	\|}		\|}

	If any lighting installation being considered will use a special or nonstandard structure or with dimensions exceeding those shown in the Standard Plans, [http://~~wwwi~~/~~intranet~~/tr/ Traffic] and [http://~~wwwi~~/~~intranet~~/br/default.~~htm~~ Bridge] are to be consulted early in the project planning regarding the installation’s feasibility and necessary contract provisions. Examples of this situation are [[901.7 Light Source and Intensity#901.7.6 High Mast Lighting\|high mast lighting]] and exceeding lengths on the Standard Plans.		If any lighting installation being considered will use a special or nonstandard structure or with dimensions exceeding those shown in the Standard Plans, [http://sharepoint/systemdelivery/tr/Pages/default.aspx Traffic] and [http://sharepoint/systemdelivery/br/pages/default.aspx Bridge] are to be consulted early in the project planning regarding the installation’s feasibility and necessary contract provisions. Examples of this situation are [[901.7 Light Source and Intensity#901.7.6 High Mast Lighting\|high mast lighting]] and exceeding lengths on the Standard Plans.

	Since designing details for nonstandard installations is typically performed by an outside engineer employed by the contractor or producer and is certified to MoDOT, the project contract documents must include appropriate requirements about the design standards used. Since structures beyond MoDOT's standard designs are involved, a performance-based specification of the design signed and sealed by a Missouri Registered Professional Engineer is needed from the contractor. Certification to the current AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic Signals including the latest fatigue provisions is required.		Since designing details for nonstandard installations is typically performed by an outside engineer employed by the contractor or producer and is certified to MoDOT, the project contract documents must include appropriate requirements about the design standards used. Since structures beyond MoDOT's standard designs are involved, a performance-based specification of the design signed and sealed by a Missouri Registered Professional Engineer is needed from the contractor. Certification to the current AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic Signals including the latest fatigue provisions is required.

Smithk: updated link

2012-08-23T18:11:15Z

updated link

← Older revision		Revision as of 13:11, 23 August 2012
Line 13:		Line 13:
	\|[[media:900 Traffic Signals.pdf\|Traffic Signals]]		\|[[media:900 Traffic Signals.pdf\|Traffic Signals]]
	\|}		\|}
	The policies, standards and guidelines set forth herein are in general accordance with [http://mutcd.fhwa.dot.gov/~~kno_2009~~.htm the ''Manual on Uniform Traffic Control Devices''] most recent edition and the subsequent rulings on requests for interpretations, changes, and experimentation, herein referred to as the ''MUTCD''. Clarification, elaboration, or the elimination of options of the individual items, is contained herein so that conformity of application will be promoted in Missouri.		The policies, standards and guidelines set forth herein are in general accordance with [http://mutcd.fhwa.dot.gov/index.htm the ''Manual on Uniform Traffic Control Devices''] most recent edition and the subsequent rulings on requests for interpretations, changes, and experimentation, herein referred to as the ''MUTCD''. Clarification, elaboration, or the elimination of options of the individual items, is contained herein so that conformity of application will be promoted in Missouri.

	There are many aspects to be considered when inspecting construction quality and this article provides [[902.19 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.20 Material Inspection for Sec 902\|guidelines for material inspections]].		There are many aspects to be considered when inspecting construction quality and this article provides [[902.19 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.20 Material Inspection for Sec 902\|guidelines for material inspections]].

Smithk: updated links

2012-01-18T17:25:09Z

updated links

← Older revision		Revision as of 12:25, 18 January 2012
Line 3:		Line 3:
	Traffic signals are electrically powered traffic control devices that warn or direct vehicular and pedestrian traffic to take some specific action. Traffic signals provide for the orderly assignment of right of way to conflicting traffic movements at intersections.		Traffic signals are electrically powered traffic control devices that warn or direct vehicular and pedestrian traffic to take some specific action. Traffic signals provide for the orderly assignment of right of way to conflicting traffic movements at intersections.

	Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.3 Traffic Control Signal Needs Studies\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.5 Traffic Control Signal Features#902.5.5 Coordination\|Coordinating]] and [[902.5 Traffic Control Signal Features#902.5.36 Signal Timing\|timing signals]] are very important.		Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C)\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.5 Coordination\|Coordinating]] and [[902.5 Traffic Control Signal Features (MUTCD Chapter 4D)#902.5.36 Signal Timing\|timing signals]] are very important.

	Traffic signals are listed on the Highway Right of Way and Construction Program in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.		Traffic signals are listed on the Highway Right of Way and Construction Program in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.

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

2012-01-17T20:26:03Z

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

← Older revision		Revision as of 15:26, 17 January 2012
Line 3:		Line 3:
	Traffic signals are electrically powered traffic control devices that warn or direct vehicular and pedestrian traffic to take some specific action. Traffic signals provide for the orderly assignment of right of way to conflicting traffic movements at intersections.		Traffic signals are electrically powered traffic control devices that warn or direct vehicular and pedestrian traffic to take some specific action. Traffic signals provide for the orderly assignment of right of way to conflicting traffic movements at intersections.

	Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.~~2 Warrants for~~ Traffic Signal ~~Installation~~\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.7 Coordination\|Coordinating]] and [[902.5 ~~Phasing and~~ Timing ~~the Signal~~\|~~phasing and~~ timing signals]] are very important.		Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.3 Traffic Control Signal Needs Studies\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.5 Traffic Control Signal Features#902.5.5 Coordination\|Coordinating]] and [[902.5 Traffic Control Signal Features#902.5.36 Signal Timing\|timing signals]] are very important.

			Traffic signals are listed on the Highway Right of Way and Construction Program in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.

	{\|style="padding: 0.3em; margin-right:10px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="left"		{\|style="padding: 0.3em; margin-right:10px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="left"
	\|-		\|-
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	\|[[media:900 Traffic Signals.pdf\|Traffic Signals]]		\|[[media:900 Traffic Signals.pdf\|Traffic Signals]]
	\|}		\|}
			The policies, standards and guidelines set forth herein are in general accordance with [http://mutcd.fhwa.dot.gov/kno_2009.htm the ''Manual on Uniform Traffic Control Devices''] most recent edition and the subsequent rulings on requests for interpretations, changes, and experimentation, herein referred to as the ''MUTCD''. Clarification, elaboration, or the elimination of options of the individual items, is contained herein so that conformity of application will be promoted in Missouri.

	~~Traffic signals~~ are ~~listed on the Highway Right of Way~~ and Construction ~~Program in the description of the type of improvement if there is a probability of future signal control~~. ~~If signals cannot be justified, they are to be eliminated from the program at the earliest possible date~~.		There are many aspects to be considered when inspecting construction quality and this article provides [[902.19 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.20 Material Inspection for Sec 902\|guidelines for material inspections]].

	This article ~~provides the~~ [[902.~~1 Basis for Installation~~\|~~basis for installation~~]] of traffic signals, discusses [[902.3 Basic Types of Signal Control\| basic types of signal control]] equipment and hardware, their characteristics, uses, applications, [[902.8 Signal Operations and Maintenance\|operations and maintenance]]. The policies, standards and guidelines set forth herein are in general accordance with [http://mutcd.fhwa.dot.gov/pdfs/2003r1/pdf-index.htm the ''Manual on Uniform Traffic Control Devices''] most recent edition and the subsequent rulings on requests for interpretations, changes, and experimentation, herein referred to as the ''MUTCD''. Clarification, elaboration, or the elimination of options of the individual items, is contained herein so that conformity of application will be promoted in Missouri.		This article also has a [[902.18 Glossary\|glossary]].

	There are many aspects to be considered when inspecting construction quality and this article provides [[902.13 Construction Inspection Guidelines for Sec 902\|construction inspection guidelines]] and [[902.14 Material Inspection for Sec 902\|guidelines for material inspections]].		===Nonstandard Structures===

	~~This article has a [[902.12 Glossary\|glossary]] and also relates to:~~

	~~- [[902.4 Installation of Equipment by Others\|installation of equipment by others (including flashers and signals for schools and other special applications)]]~~
	{\|style="padding: 0.3em; margin-right:7px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#ffddcc" width="210px" align="right"		{\|style="padding: 0.3em; margin-right:7px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#ffddcc" width="210px" align="right"
	\|-		\|-
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	\|'''See also:''' [http://www.modot.gov/services/OR/byDate.htm Innovation Library]		\|'''See also:''' [http://www.modot.gov/services/OR/byDate.htm Innovation Library]
	\|}		\|}

	~~- [[902.6 Signal Indications and Signing\|signal indications and signing]]~~

	~~- [[902.9 Computer Applications\|computer applications]]~~

	~~- [[902.10 Signal Installations and Equipment\| signal installations and equipment]]~~

	~~- [[902.11 Other Design Aspects of Traffic Signals\|other design aspects of traffic signals]]~~

	~~- [[902.16 The Mobility Plan – Effective Arterial Management\|effective arterial management]].~~

	~~===Nonstandard Structures===~~

	If any lighting installation being considered will use a special or nonstandard structure or with dimensions exceeding those shown in the Standard Plans, [http://wwwi/intranet/tr/ Traffic] and [http://wwwi/intranet/br/default.htm Bridge] are to be consulted early in the project planning regarding the installation’s feasibility and necessary contract provisions. Examples of this situation are [[901.7 Light Source and Intensity#901.7.6 High Mast Lighting\|high mast lighting]] and exceeding lengths on the Standard Plans.		If any lighting installation being considered will use a special or nonstandard structure or with dimensions exceeding those shown in the Standard Plans, [http://wwwi/intranet/tr/ Traffic] and [http://wwwi/intranet/br/default.htm Bridge] are to be consulted early in the project planning regarding the installation’s feasibility and necessary contract provisions. Examples of this situation are [[901.7 Light Source and Intensity#901.7.6 High Mast Lighting\|high mast lighting]] and exceeding lengths on the Standard Plans.

	Since designing details for nonstandard installations is typically performed by an outside engineer employed by the contractor or producer and is certified to MoDOT, the project contract documents must include appropriate requirements about the design standards used. Since structures beyond MoDOT's standard designs are involved, a performance-based specification of the design signed and sealed by a Missouri Registered Professional Engineer is needed from the contractor. Certification to the current AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic Signals including the latest fatigue provisions is required.		Since designing details for nonstandard installations is typically performed by an outside engineer employed by the contractor or producer and is certified to MoDOT, the project contract documents must include appropriate requirements about the design standards used. Since structures beyond MoDOT's standard designs are involved, a performance-based specification of the design signed and sealed by a Missouri Registered Professional Engineer is needed from the contractor. Certification to the current AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic Signals including the latest fatigue provisions is required.

Smithk: Per Organizational Results, links to reports added

2011-03-08T13:51:21Z

Per Organizational Results, links to reports added

← Older revision		Revision as of 08:51, 8 March 2011
Line 20:		Line 20:

	- [[902.4 Installation of Equipment by Others\|installation of equipment by others (including flashers and signals for schools and other special applications)]]		- [[902.4 Installation of Equipment by Others\|installation of equipment by others (including flashers and signals for schools and other special applications)]]
			{\|style="padding: 0.3em; margin-right:7px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#ffddcc" width="210px" align="right"
			\|-
			\|'''Adaptive Traffic Signals'''
			\|-
			\|[http://library.modot.mo.gov/RDT/reports/Ri08026/or10020.pdf Evaluation of an Adaptive Traffic Signal System: Route 291 in Lee's Summit]
			\|-
			\|'''See also:''' [http://www.modot.gov/services/OR/byDate.htm Innovation Library]
			\|}

	- [[902.6 Signal Indications and Signing\|signal indications and signing]]		- [[902.6 Signal Indications and Signing\|signal indications and signing]]

Smithk: added link

2010-11-04T18:08:19Z

added link

← Older revision		Revision as of 13:08, 4 November 2010
Line 4:		Line 4:

	Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.2 Warrants for Traffic Signal Installation\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.7 Coordination\|Coordinating]] and [[902.5 Phasing and Timing the Signal\|phasing and timing signals]] are very important.		Traffic signals are not a complete solution for traffic problems. Traffic signals can sometime create additional congestion and cause additional delay to vehicles if improperly designed, installed, or maintained. Correctly designed and operated traffic signals installed at [[902.2 Warrants for Traffic Signal Installation\| warranted locations]] will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. [[902.7 Coordination\|Coordinating]] and [[902.5 Phasing and Timing the Signal\|phasing and timing signals]] are very important.
			{\|style="padding: 0.3em; margin-right:10px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="left"
			\|-
			\|colspan="2"\|'''Traffic Pamphlet'''
			\|-
			\|[[media:900 Traffic Signals.pdf\|Traffic Signals]]
			\|}

	Traffic signals are listed on the Highway Right of Way and Construction Program in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.		Traffic signals are listed on the Highway Right of Way and Construction Program in the description of the type of improvement if there is a probability of future signal control. If signals cannot be justified, they are to be eliminated from the program at the earliest possible date.