902.1 General (MUTCD Chapter 4A) - Revision history

Hoskir: /* {{SpanID|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08) */ updated per comments on RR4271

2026-10-29T19:04:38Z

{{SpanID|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08): updated per comments on RR4271

← Older revision		Revision as of 13:04, 29 October 2026
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	'''Standard.''' If used, illuminated traffic signal signs shall be designed and mounted in such a manner as to avoid glare and reflections that seriously detract from the signal indications. Highway traffic signal faces shall be given dominant position and brightness to maximize their priority in the overall display.		'''Standard.''' If used, illuminated traffic signal signs shall be designed and mounted in such a manner as to avoid glare and reflections that seriously detract from the signal indications. Highway traffic signal faces shall be given dominant position and brightness to maximize their priority in the overall display.

	The minimum vertical clearance and horizontal offset of the total assembly of traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]]) shall comply with the provisions of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.9_Mounting_Height_of_Signal_Faces_(MUTCD_Section_4D.09)\|902.4.9]] and [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.10_Lateral_Offset_(Clearance)_of_Signal_Faces_(MUTCD_Section_4D.10)]].		The minimum vertical clearance and horizontal offset of the total assembly of traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]]) shall comply with the provisions of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.9_Mounting_Height_of_Signal_Faces_(MUTCD_Section_4D.09)\|902.4.9]] and [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.10_Lateral_Offset_(Clearance)_of_Signal_Faces_(MUTCD_Section_4D.10)\|902.4.10]].

	STOP signs shall not be used in conjunction with any highway traffic signal operation, except in the following cases:		STOP signs shall not be used in conjunction with any highway traffic signal operation, except in the following cases:
	:A. If the signal indication for an approach is a flashing red at all times, or		:A. If the signal indication for an approach is a flashing red at all times, or
	:B. If a minor street or driveway is located within or adjacent to an area controlled by a traffic control signal, and an engineering study determines it does not require separate traffic signal control because an extremely low potential for conflict exists, or		:B. If a minor street or driveway is located within or adjacent to an area controlled by a traffic control signal, and an engineering study determines it does not require separate traffic signal control because an extremely low potential for conflict exists, or
	:C. If a crosswalk located within or immediately adjacent to a minor driveway or street is signalized in accordance with the ~~second option~~ paragraph of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.1_General_(MUTCD_Section_4D.01)\|902.4.1]].		:C. If a crosswalk located within or immediately adjacent to a minor driveway or street is signalized in accordance with the last Option paragraph of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.1_General_(MUTCD_Section_4D.01)\|902.4.1]].

	=={{SpanID\|902.1.9}}902.1.9 Use of Pavement Markings at Signalized Locations (MUTCD Section 4A.09)==		=={{SpanID\|902.1.9}}902.1.9 Use of Pavement Markings at Signalized Locations (MUTCD Section 4A.09)==

Hoskir: /* {{SpanID|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08) */ updated per RR4271

2026-10-29T18:59:05Z

{{SpanID|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08): updated per RR4271

← Older revision		Revision as of 12:59, 29 October 2026
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	=={{SpanID\|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08)==		=={{SpanID\|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08)==

	'''Support. '''Traffic signal signs are sometimes used at highway traffic signal locations to instruct or guide pedestrians, bicyclists, or motorists. Among the signs typically used at or on the approaches to signalized locations are movement prohibition signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.24\|EPG 903.2.24]]), lane-control signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.25\|EPG 903.2.25]] through [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.27\|EPG 903.2.27]]), pedestrian crossing signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.46\|EPG 903.2.46]]), pedestrian and bicycle actuation signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.47\|EPG 903.2.47]]), traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]] and [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.36\|EPG 903.3.36]]), No Turn on Red signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.49\|EPG 903.2.49]]), Signal Ahead warning signs (see [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.29\|EPG 903.3.29]]), Street Name signs (see [[903.4 Guide Signs—Conventional Roads (MUTCD Chapter 2D) #903.4.40\|EPG 903.4.40]]), and Advance Street Name signs (see [[903.4 Guide Signs—Conventional Roads (MUTCD Chapter 2D) #903.4.41\|EPG 903.4.41]]).		'''Support.''' Traffic signal signs are sometimes used at highway traffic signal locations to instruct or guide pedestrians, bicyclists, or motorists. Among the signs typically used at or on the approaches to signalized locations are movement prohibition signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.24\|EPG 903.2.24]]), lane-control signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.25\|EPG 903.2.25]] through [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.27\|EPG 903.2.27]]), pedestrian crossing signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.46\|EPG 903.2.46]]), pedestrian and bicycle actuation signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.47\|EPG 903.2.47]]), traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]] and [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.36\|EPG 903.3.36]]), No Turn on Red signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.49\|EPG 903.2.49]]), Signal Ahead warning signs (see [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C) #903.3.29\|EPG 903.3.29]]), Street Name signs (see [[903.4 Guide Signs—Conventional Roads (MUTCD Chapter 2D) #903.4.40\|EPG 903.4.40]]), and Advance Street Name signs (see [[903.4 Guide Signs—Conventional Roads (MUTCD Chapter 2D) #903.4.41\|EPG 903.4.41]]).

	'''Guidance. '''Regulatory, warning, and guide signs should be used at highway traffic signal locations as provided in Part 2 and as specifically provided elsewhere in EPG 902.		'''Guidance.''' Regulatory, warning, and guide signs should be used at highway traffic signal locations as provided in Part 2 and as specifically provided elsewhere in EPG 902.

	'''Support. '''[[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.25\|EPG 903.2.25]] contains information regarding the use of overhead lane-control signs on signalized approaches where lane drops, multiple-lane turns involving combined through-and-turn lanes, or other lane-use regulations that would be unexpected by unfamiliar road users are present.		'''Support.''' [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.25\|EPG 903.2.25]] contains information regarding the use of overhead lane-control signs on signalized approaches where lane drops, multiple-lane turns involving combined through-and-turn lanes, or other lane-use regulations that would be unexpected by unfamiliar road users are present.

	'''Standard. '''If used, illuminated traffic signal signs shall be designed and mounted in such a manner as to avoid glare and reflections that seriously detract from the signal indications. Highway traffic signal faces shall be given dominant position and brightness to maximize their priority in the overall display.		'''Standard.''' If used, illuminated traffic signal signs shall be designed and mounted in such a manner as to avoid glare and reflections that seriously detract from the signal indications. Highway traffic signal faces shall be given dominant position and brightness to maximize their priority in the overall display.

	The minimum vertical clearance and horizontal offset of the total assembly of traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]]) shall comply with the provisions of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.9_Mounting_Height_of_Signal_Faces_(MUTCD_Section_4D.09)\|902.4.9]] and [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.10_Lateral_Offset_(Clearance)_of_Signal_Faces_(MUTCD_Section_4D.10)]].		The minimum vertical clearance and horizontal offset of the total assembly of traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]]) shall comply with the provisions of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.9_Mounting_Height_of_Signal_Faces_(MUTCD_Section_4D.09)\|902.4.9]] and [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.10_Lateral_Offset_(Clearance)_of_Signal_Faces_(MUTCD_Section_4D.10)]].

	STOP signs shall not be used in conjunction with any highway traffic signal operation, except in ~~either of~~ the following cases:		STOP signs shall not be used in conjunction with any highway traffic signal operation, except in the following cases:

	:A. If the signal indication for an approach is a flashing red at all times, or		:A. If the signal indication for an approach is a flashing red at all times, or
			:B. If a minor street or driveway is located within or adjacent to an area controlled by a traffic control signal, and an engineering study determines it does not require separate traffic signal control because an extremely low potential for conflict exists, or
	:B. If a minor street or driveway is located within or adjacent to an area controlled by a traffic control signal, ~~but~~ does not require separate traffic signal control because an extremely low potential for conflict exists.		:C. If a crosswalk located within or immediately adjacent to a minor driveway or street is signalized in accordance with the second option paragraph of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.1_General_(MUTCD_Section_4D.01)\|902.4.1]].

	=={{SpanID\|902.1.9}}902.1.9 Use of Pavement Markings at Signalized Locations (MUTCD Section 4A.09)==		=={{SpanID\|902.1.9}}902.1.9 Use of Pavement Markings at Signalized Locations (MUTCD Section 4A.09)==

Hoskir: /* {{SpanID|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08) */ updated 2 links

2026-01-12T21:12:12Z

{{SpanID|902.1.8}}902.1.8 Use of Signs at Signalized Locations (MUTCD Section 4A.08): updated 2 links

← Older revision		Revision as of 15:12, 12 January 2026
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	'''Standard. '''If used, illuminated traffic signal signs shall be designed and mounted in such a manner as to avoid glare and reflections that seriously detract from the signal indications. Highway traffic signal faces shall be given dominant position and brightness to maximize their priority in the overall display.		'''Standard. '''If used, illuminated traffic signal signs shall be designed and mounted in such a manner as to avoid glare and reflections that seriously detract from the signal indications. Highway traffic signal faces shall be given dominant position and brightness to maximize their priority in the overall display.

	The minimum vertical clearance and horizontal offset of the total assembly of traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]]) shall comply with the provisions of EPG [[902.~~4 Signal Installations and Equipment~~ (~~MUTCD Chapter 4D~~) #902.4.9\|902.4.9]] and [[902.~~4 Signal Installations and Equipment~~ (~~MUTCD Chapter 4D~~) #902.4.~~10\|902.4~~.10]].		The minimum vertical clearance and horizontal offset of the total assembly of traffic signal signs (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.48\|EPG 903.2.48]]) shall comply with the provisions of EPG [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.9_Mounting_Height_of_Signal_Faces_(MUTCD_Section_4D.09)\|902.4.9]] and [[902.4_Design_Features_of_Traffic_Control_Signals_(MUTCD_Chapter_4D)#902.4.10_Lateral_Offset_(Clearance)_of_Signal_Faces_(MUTCD_Section_4D.10)]].

	STOP signs shall not be used in conjunction with any highway traffic signal operation, except in either of the following cases:		STOP signs shall not be used in conjunction with any highway traffic signal operation, except in either of the following cases:

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

2026-01-05T21:33:45Z

Updated due to MUTCD updates (See Special Ballot)

Show changes

Smithk: new photo

2015-04-02T15:27:46Z

new photo

← Older revision		Revision as of 09:27, 2 April 2015
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			[[image:902.1.jpg\|right\|300px]]
	==902.1.1 Types (MUTCD Section 4A. 01)==		==902.1.1 Types (MUTCD Section 4A. 01)==

Smithk: updated link

2012-08-23T18:11:45Z

updated link

← Older revision		Revision as of 12:11, 23 August 2012
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	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.

	This article provides the basis for installation of traffic signals, discusses basic types of signal control equipment and hardware, their characteristics, uses, applications, operations and maintenance. The policies, standards and guidelines set forth herein are in substantial conformance with the [http://mutcd.fhwa.dot.gov/~~pdfs/2009/pdf_index~~.htm ''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 provides the basis for installation of traffic signals, discusses basic types of signal control equipment and hardware, their characteristics, uses, applications, operations and maintenance. The policies, standards and guidelines set forth herein are in substantial conformance with the [http://mutcd.fhwa.dot.gov/index.htm ''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.

	===902.1.1.1 Nonstandard Structures===		===902.1.1.1 Nonstandard Structures===

Smithk: /* 902.1.1 Types (MUTCD Section 4A. 01) */ minor correction

2012-03-20T15:50:19Z

902.1.1 Types (MUTCD Section 4A. 01): minor correction

← Older revision		Revision as of 09:50, 20 March 2012
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	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 warranted locations will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. Coordinating and 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 warranted locations will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. Coordinating and phasing and timing signals are very important.

	Traffic signals are listed on the [[121.3 The Statewide Transportation Improvement Program (STIP)\|Statewide Transportation Improvement Program (STIP)]]n 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.

	This article provides the basis for installation of traffic signals, discusses basic types of signal control equipment and hardware, their characteristics, uses, applications, operations and maintenance. The policies, standards and guidelines set forth herein are in substantial conformance with the [http://mutcd.fhwa.dot.gov/pdfs/2009/pdf_index.htm ''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 provides the basis for installation of traffic signals, discusses basic types of signal control equipment and hardware, their characteristics, uses, applications, operations and maintenance. The policies, standards and guidelines set forth herein are in substantial conformance with the [http://mutcd.fhwa.dot.gov/pdfs/2009/pdf_index.htm ''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.

Smithk: 902.1 General moved to 902.1 General (MUTCD Chapter 4A)

2012-01-17T20:35:03Z

902.1 General moved to 902.1 General (MUTCD Chapter 4A)

← Older revision	Revision as of 14:35, 17 January 2012
(No difference)

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

2012-01-17T20:31:03Z

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

New page

==902.1.1 Types (MUTCD Section 4A. 01)==

'''Support.''' 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. The following types and uses of highway traffic signals are discussed in EPG 902:

:* traffic control signals
:* pedestrian signals
:* hybrid beacons
:* emergency-vehicle signals
:* traffic control signals for one-lane, two-way facilities
:* traffic control signals for freeway entrance ramps
:* flashing beacons
:* lane-use control signals and
:* in-roadway lights.

Other highway traffic signals not currently used in Missouri are: traffic control signals for movable bridges and toll plaza traffic signals.

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 warranted locations will provide for the orderly movement of traffic, increase the intersection capacity, and in some instances, tend to reduce accidents. Coordinating and phasing and timing signals are very important.

Traffic signals are listed on the [[121.3 The Statewide Transportation Improvement Program (STIP)|Statewide Transportation Improvement Program (STIP)]]n 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.

This article provides the basis for installation of traffic signals, discusses basic types of signal control equipment and hardware, their characteristics, uses, applications, operations and maintenance. The policies, standards and guidelines set forth herein are in substantial conformance with the [http://mutcd.fhwa.dot.gov/pdfs/2009/pdf_index.htm ''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.

===902.1.1.1 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, Traffic and Bridge are to be consulted early in the project planning regarding the installation’s feasibility and necessary contract provisions. Examples of this situation are 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.

===902.1.2 Definitions Relating to Highway Traffic Signals (MUTCD Section 4A.02)===

'''Support.''' Definitions and acronyms pertaining to EPG 902 are provided in [[902.18 Glossary|EPG 902.18 Glossary]].

[[Category:902 Signals|902.01]]