902.2 Traffic Control Signals (MUTCD Chapter 4B) - Revision history

HogsettC: /* {{SpanID|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03) */

2025-11-24T13:48:51Z

{{SpanID|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03)

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	:N. Employing other alternatives, depending on conditions at the intersection.		:N. Employing other alternatives, depending on conditions at the intersection.

	'''Support. '''[[--\|EPG 233.5]] contains information on intersection alternatives.		'''Support. '''[[:Category:233 At - Grade Intersections\|EPG 233]] contains information on intersection alternatives.

	=={{SpanID\|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)==		=={{SpanID\|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)==

HogsettC: /* {{SpanID|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05) */

2025-11-21T20:03:50Z

{{SpanID|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)

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	Instead of total removal of a traffic control signal, the poles, controller cabinet, and cables may remain in place after removal of the signal heads for continued analysis.		Instead of total removal of a traffic control signal, the poles, controller cabinet, and cables may remain in place after removal of the signal heads for continued analysis.

	~~See [[~~--~~\|EPG 902~~.XX.~~X]] for~~ traffic signal removal ~~guidelines~~.		'''Standard.''' After all of the above considerations have been evaluated and if the decision is made to proceed with the removal, the following steps shall be taken:
			:# Central Office Traffic shall be advised and documentation of the above noted evaluations provided to support the decision.
			:# Public notice of the intention to remove shall be made. This can consist of news releases, public hearings and presentations at city council meetings or canvassing parties affected by the removal. This is a very important step and the district must be prepared to answer any questions that might arise.
			:# Establish a date for the signal to be turned off and notify Central Office Traffic.
			:# Flash the signal heads for a minimum of 30 days. After the flash period, cover the signal heads for no less than 60 days. The type of flash used shall compliment the type of traffic control selected for the intersection, yellow/red for two-way stops and red/red for four-way stops.
			:# After the 90 day transition period has been successfully completed, the physical removal of the signals can be initiated. A comprehensive removal shall be completed with all concrete foundations and bases removed to at least flush with the ground. Consideration shall be given to filling or securing any pull boxes.

			'''Guidance.''' When a temporary traffic control signal is removed the appropriate traffic control to be used after removal of the signal is to be determined and any sight distance restrictions removed.

HogsettC: /* {{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04) */

2025-11-21T20:00:47Z

{{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)

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	Meeting the warrant requirements of the MUTCD alone is not necessarily a sufficient reason to install traffic signals. Since the installation of traffic control signals will operate either to the advantage or disadvantage of vehicles and persons controlled, the selection and use of traffic control devices is to be preceded by a thorough engineering study of the roadway and traffic conditions.		Meeting the warrant requirements of the MUTCD alone is not necessarily a sufficient reason to install traffic signals. Since the installation of traffic control signals will operate either to the advantage or disadvantage of vehicles and persons controlled, the selection and use of traffic control devices is to be preceded by a thorough engineering study of the roadway and traffic conditions.

	'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions~~. See [[902.21 Designing a MoDOT Traffic Signal #902.21.1\|EPG 902.21.1]] for traffic signal installation guidelines~~.		'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions.

	=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==		=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==

HogsettC: /* {{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04) */

2025-11-21T20:00:29Z

{{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)

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	'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]], that define the minimum conditions under which installing traffic control signals might be justified.		'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]], that define the minimum conditions under which installing traffic control signals might be justified.

			MoDOT’s general policy is to own, operate and maintain all traffic signals and flashers installed or constructed on the state highway system.

			When the installation of a traffic signal is warranted, the cost of the signal (excluding emergency and school signals), installation and maintenance, and electrical power for operation, unless otherwise stated, will be borne by the Commission. Where possible, MoDOT takes advantage of any reduced power rates by including in the municipal and/or county agreement a phrase the city will pay for the power, with reimbursement to be made by the state. Where city/county power is not available, MoDOT pays for the power directly.

			The need for signalizing an intersection will normally be recognized and initiated at the district level. A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in EPG 902.3, that define the minimum conditions under which installing traffic control signals might be justified.

			Meeting the warrant requirements of the MUTCD alone is not necessarily a sufficient reason to install traffic signals. Since the installation of traffic control signals will operate either to the advantage or disadvantage of vehicles and persons controlled, the selection and use of traffic control devices is to be preceded by a thorough engineering study of the roadway and traffic conditions.

	'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See [[902.21 Designing a MoDOT Traffic Signal #902.21.1\|EPG 902.21.1]] for traffic signal installation guidelines.		'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See [[902.21 Designing a MoDOT Traffic Signal #902.21.1\|EPG 902.21.1]] for traffic signal installation guidelines.

HogsettC: /* {{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04) */

2025-11-20T17:38:10Z

{{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)

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	'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]], that define the minimum conditions under which installing traffic control signals might be justified.		'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]], that define the minimum conditions under which installing traffic control signals might be justified.

	'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See [[--\|EPG 902.XX.X]] for traffic signal installation guidelines.		'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See [[902.21 Designing a MoDOT Traffic Signal #902.21.1\|EPG 902.21.1]] for traffic signal installation guidelines.

	=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==		=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==

HogsettC: /* {{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04) */

2025-11-13T22:37:51Z

{{SpanID|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)

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	=={{SpanID\|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)==		=={{SpanID\|902.2.4}}902.2.4 Basis of Installation of Traffic Control Signals (MUTCD Section 4B.04)==

	'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in EPG 902.3, that define the minimum conditions under which installing traffic control signals might be justified.		'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]], that define the minimum conditions under which installing traffic control signals might be justified.

	'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See EPG 902.XX.X for traffic signal installation guidelines.		'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See [[--\|EPG 902.XX.X]] for traffic signal installation guidelines.

	=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==		=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==

HogsettC: /* {{SpanID|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03) */

2025-11-13T22:35:28Z

{{SpanID|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03)

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	'''Option. '''These alternatives may include, but are not limited to, the following:		'''Option. '''These alternatives may include, but are not limited to, the following:
	:A. Installing signs along the major street to warn road users approaching the intersection;		:A. Installing signs along the major street to warn road users approaching the intersection;
	:B. Installing a roundabout to reduce fatal and serious injury crashes and vehicular conflicts that result in fatal and serious injury crashes (see [[--\|~~Section 8A~~.12]] if the location is in close proximity to a grade crossing);		:B. Installing a roundabout to reduce fatal and serious injury crashes and vehicular conflicts that result in fatal and serious injury crashes (see [[913.1 General (MUTCD Chapter 8A) #913.1.12\|EPG 913.1.12]] if the location is in close proximity to a grade crossing);
	:C. Installing a pedestrian hybrid beacon (see [[902.10 Pedestrian Hybrid Beacons (MUTCD Chapter 4J) #902.10\|EPG 902.10]]), rectangular rapid flashing beacons (see [[902.12 Rectangular Rapid Flashing Beacons (MUTCD Chapter 4L) #902.12\|EPG 902.12]]), pedestrian-actuated Warning Beacons (see [[902.18 Flashing Beacons (MUTCD Chapter 4S) #902.18\| EPG 902.18]]), or In-Roadway Warning Lights (see [[902.20 In-Roadway Warning Lights (MUTCD Chapter 4U) #902.20\| EPG 902.20]]) if pedestrian safety is the major concern;		:C. Installing a pedestrian hybrid beacon (see [[902.10 Pedestrian Hybrid Beacons (MUTCD Chapter 4J) #902.10\|EPG 902.10]]), rectangular rapid flashing beacons (see [[902.12 Rectangular Rapid Flashing Beacons (MUTCD Chapter 4L) #902.12\|EPG 902.12]]), pedestrian-actuated Warning Beacons (see [[902.18 Flashing Beacons (MUTCD Chapter 4S) #902.18\| EPG 902.18]]), or In-Roadway Warning Lights (see [[902.20 In-Roadway Warning Lights (MUTCD Chapter 4U) #902.20\| EPG 902.20]]) if pedestrian safety is the major concern;
	:D. Relocating the stop line(s) and making other changes to improve the sight distance at the intersection;		:D. Relocating the stop line(s) and making other changes to improve the sight distance at the intersection;

HogsettC: /* {{SpanID|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03) */

2025-10-27T12:47:12Z

{{SpanID|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03)

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	=={{SpanID\|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03)==		=={{SpanID\|902.2.3}}902.2.3 Alternatives to Traffic Control Signals (MUTCD Section 4B.03)==

	'''Guidance. '''Since road user delay and the frequency of some types of crashes are sometimes higher under traffic signal control than under STOP sign control, consideration should be given to providing alternatives to traffic control signals even if one or more of the signal warrants (see EPG 902.3) has been satisfied.		'''Guidance. '''Since road user delay and the frequency of some types of crashes are sometimes higher under traffic signal control than under STOP sign control, consideration should be given to providing alternatives to traffic control signals even if one or more of the signal warrants (see [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]]) has been satisfied.

	'''Option. '''These alternatives may include, but are not limited to, the following:		'''Option. '''These alternatives may include, but are not limited to, the following:
	:A. Installing signs along the major street to warn road users approaching the intersection;		:A. Installing signs along the major street to warn road users approaching the intersection;
	:B. Installing a roundabout to reduce fatal and serious injury crashes and vehicular conflicts that result in fatal and serious injury crashes (see [[--\|Section 8A.12]] if the location is in close proximity to a grade crossing);		:B. Installing a roundabout to reduce fatal and serious injury crashes and vehicular conflicts that result in fatal and serious injury crashes (see [[--\|Section 8A.12]] if the location is in close proximity to a grade crossing);
	:C. Installing a pedestrian hybrid beacon (see EPG 902.10), rectangular rapid flashing beacons (see EPG 902.12), pedestrian-actuated Warning Beacons (see EPG 902.18), or In-Roadway Warning Lights (see EPG 902.20) if pedestrian safety is the major concern;		:C. Installing a pedestrian hybrid beacon (see [[902.10 Pedestrian Hybrid Beacons (MUTCD Chapter 4J) #902.10\|EPG 902.10]]), rectangular rapid flashing beacons (see [[902.12 Rectangular Rapid Flashing Beacons (MUTCD Chapter 4L) #902.12\|EPG 902.12]]), pedestrian-actuated Warning Beacons (see [[902.18 Flashing Beacons (MUTCD Chapter 4S) #902.18\| EPG 902.18]]), or In-Roadway Warning Lights (see [[902.20 In-Roadway Warning Lights (MUTCD Chapter 4U) #902.20\| EPG 902.20]]) if pedestrian safety is the major concern;
	:D. Relocating the stop line(s) and making other changes to improve the sight distance at the intersection;		:D. Relocating the stop line(s) and making other changes to improve the sight distance at the intersection;
	:E. Installing measures designed to reduce speeds on the approaches;		:E. Installing measures designed to reduce speeds on the approaches;

TaracksA at 18:16, 6 October 2025

2025-10-06T18:16:32Z

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	[[Category:902 Signals\|902.02]]		[[Category:902 Signals (MUTCD Part 4)\|902.02]]

	=={{SpanID\|902.2.1}}902.2.1 General (MUTCD Section 4B.01)==		=={{SpanID\|902.2.1}}902.2.1 General (MUTCD Section 4B.01)==

TaracksA: /* {{SpanID|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05) */

2025-10-06T17:16:07Z

{{SpanID|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)

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	:E. Remove the signal if the engineering data collected during the removal study period confirms that the signal is no longer needed.		:E. Remove the signal if the engineering data collected during the removal study period confirms that the signal is no longer needed.

	'''Option. '''Because Items C, D, and E in the third paragraph of this Article are not relevant when a temporary traffic control signal (see [[902.4 Signal Installations and Equipment (MUTCD Chapter 4D) #902.4.11\|EPG 902.4.11]]) is removed, a temporary traffic control signal may be removed immediately after Items A and B are completed.		'''Option. '''Because Items C, D, and E in the third guidance paragraph of this Article are not relevant when a temporary traffic control signal (see [[902.4 Signal Installations and Equipment (MUTCD Chapter 4D) #902.4.11\|EPG 902.4.11]]) is removed, a temporary traffic control signal may be removed immediately after Items A and B are completed.

	Instead of total removal of a traffic control signal, the poles, controller cabinet, and cables may remain in place after removal of the signal heads for continued analysis.		Instead of total removal of a traffic control signal, the poles, controller cabinet, and cables may remain in place after removal of the signal heads for continued analysis.

	See [[--\|EPG 902.XX.X]] for traffic signal removal guidelines.		See [[--\|EPG 902.XX.X]] for traffic signal removal guidelines.

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	'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]], that define the minimum conditions under which installing traffic control signals might be justified.		'''Support. '''A careful analysis of traffic operations, pedestrian and bicyclist needs, and other factors at a large number of signalized and unsignalized locations, coupled with engineering judgment, has provided a series of signal warrants, described in [[902.3 Traffic Control Signal Needs Studies (MUTCD Chapter 4C) #902.3\|EPG 902.3]], that define the minimum conditions under which installing traffic control signals might be justified.

	'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See [[--\|EPG 902.XX.X]] for traffic signal installation guidelines.		'''Guidance. '''The design (including the phasing, operation, and timing) of new traffic control signals should be based on an engineering study of roadway, traffic, and other conditions. See [[902.21 Designing a MoDOT Traffic Signal #902.21.1\|EPG 902.21.1]] for traffic signal installation guidelines.

	=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==		=={{SpanID\|902.2.5}}902.2.5 Basis of Removal of Traffic Control Signals (MUTCD Section 4B.05)==