902.20 In-Roadway Warning Lights (MUTCD Chapter 4U) - Revision history

RollerA: /* {{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02) */

2025-11-05T21:28:43Z

{{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02)

← Older revision		Revision as of 16:28, 5 November 2025
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	An audible information device should be used with In-Roadway Warning Lights to provide assistance for pedestrians with vision disabilities.		An audible information device should be used with In-Roadway Warning Lights to provide assistance for pedestrians with vision disabilities.

	'''Standard. '''If pedestrian push buttons (rather than passive detection) are used to actuate the In-Roadway Warning Lights, a PUSH BUTTON FOR WARNING LIGHTS/WAIT FOR GAP IN TRAFFIC (R10-25) sign (see [[903.2 Regulatory Signs and Barricades #903.2.47\|EPG 903.2.47]]) shall be installed adjacent to a pedestrian push button detector explaining the purpose and use of the pedestrian push button detector.		'''Standard. '''If pedestrian push buttons (rather than passive detection) are used to actuate the In-Roadway Warning Lights, a PUSH BUTTON FOR WARNING LIGHTS/WAIT FOR GAP IN TRAFFIC (R10-25) sign (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.47\|EPG 903.2.47]]) shall be installed adjacent to a pedestrian push button detector explaining the purpose and use of the pedestrian push button detector.

	Where the period of operation is sufficient only for crossing from a curb or shoulder to a median of sufficient width for pedestrians to wait, median-mounted pedestrian actuators shall be provided.		Where the period of operation is sufficient only for crossing from a curb or shoulder to a median of sufficient width for pedestrians to wait, median-mounted pedestrian actuators shall be provided.

HogsettC: /* {{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02) */

2025-10-27T16:43:56Z

{{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02)

← Older revision		Revision as of 11:43, 27 October 2025
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	An audible information device should be used with In-Roadway Warning Lights to provide assistance for pedestrians with vision disabilities.		An audible information device should be used with In-Roadway Warning Lights to provide assistance for pedestrians with vision disabilities.

	'''Standard. '''If pedestrian push buttons (rather than passive detection) are used to actuate the In-Roadway Warning Lights, a PUSH BUTTON FOR WARNING LIGHTS/WAIT FOR GAP IN TRAFFIC (R10-25) sign (see [[--\|~~Section 2B~~.58]]) shall be installed adjacent to a pedestrian push button detector explaining the purpose and use of the pedestrian push button detector.		'''Standard. '''If pedestrian push buttons (rather than passive detection) are used to actuate the In-Roadway Warning Lights, a PUSH BUTTON FOR WARNING LIGHTS/WAIT FOR GAP IN TRAFFIC (R10-25) sign (see [[903.2 Regulatory Signs and Barricades #903.2.47\|EPG 903.2.47]]) shall be installed adjacent to a pedestrian push button detector explaining the purpose and use of the pedestrian push button detector.

	Where the period of operation is sufficient only for crossing from a curb or shoulder to a median of sufficient width for pedestrians to wait, median-mounted pedestrian actuators shall be provided.		Where the period of operation is sufficient only for crossing from a curb or shoulder to a median of sufficient width for pedestrians to wait, median-mounted pedestrian actuators shall be provided.

HogsettC: /* {{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01) */

2025-10-27T16:41:53Z

{{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)

← Older revision		Revision as of 11:41, 27 October 2025
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	=={{SpanID\|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)==		=={{SpanID\|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)==

	'''Support. '''In-Roadway Warning Lights are special types of highway traffic signals installed in the roadway surface to warn road users that they are approaching a condition on or adjacent to the roadway that might not be readily apparent and might require the road users to reduce their speed and/or come to a stop. This includes situations warning of marked school crosswalks, marked midblock crosswalks, marked crosswalks on uncontrolled approaches, marked crosswalks in advance of roundabouts as described in [[~~--\|~~Chapter 3D]], and other roadway situations involving pedestrian crossings.		'''Support. '''In-Roadway Warning Lights are special types of highway traffic signals installed in the roadway surface to warn road users that they are approaching a condition on or adjacent to the roadway that might not be readily apparent and might require the road users to reduce their speed and/or come to a stop. This includes situations warning of marked school crosswalks, marked midblock crosswalks, marked crosswalks on uncontrolled approaches, marked crosswalks in advance of roundabouts as described in [[620.4 Circular Intersection Markings (MUTCD Chapter 3D) #620.4\|EPG 620.4]], and other roadway situations involving pedestrian crossings.

	'''Standard. '''In-Roadway Warning Lights shall not be used for any application that is not described in this Article.		'''Standard. '''In-Roadway Warning Lights shall not be used for any application that is not described in this Article.
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	When used, In-Roadway Warning Lights shall be flashed and shall not be steadily illuminated.		When used, In-Roadway Warning Lights shall be flashed and shall not be steadily illuminated.

	'''Support. '''Steadily illuminated lights installed in the roadway surface are considered to be internally illuminated raised pavement markers (see [[--\|~~Section 3B~~.14]]).'''		'''Support. '''Steadily illuminated lights installed in the roadway surface are considered to be internally illuminated raised pavement markers (see [[620.2 Pavement and Curb Markings (MUTCD Chapter 3B) #620.2.16\|EPG 620.2.16]]).'''

	'''Option. '''In-Roadway Warning Lights may be flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect (see [[902.20 In-Roadway Warning Lights (MUTCD Chapter 4U) #902.20.2\|EPG 902.20.2]]).		'''Option. '''In-Roadway Warning Lights may be flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect (see [[902.20 In-Roadway Warning Lights (MUTCD Chapter 4U) #902.20.2\|EPG 902.20.2]]).

TaracksA: /* {{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02) */

2025-10-13T18:10:12Z

{{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02)

← Older revision		Revision as of 13:10, 13 October 2025
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	If In-Roadway Warning Lights are used at a crosswalk, the following requirements shall apply:		If In-Roadway Warning Lights are used at a crosswalk, the following requirements shall apply:
	:A. Except as provided in ~~the second paragraph of~~ the third and fourth option paragraphs of this Article, they shall be installed along both sides of the crosswalk and shall span its entire length.		:A. Except as provided in the third and fourth option paragraphs of this Article, they shall be installed along both sides of the crosswalk and shall span its entire length.
	:B. They shall initiate operation based on pedestrian actuation and shall cease operation at a predetermined time after the pedestrian actuation or, with passive detection, after the pedestrian clears the crosswalk.		:B. They shall initiate operation based on pedestrian actuation and shall cease operation at a predetermined time after the pedestrian actuation or, with passive detection, after the pedestrian clears the crosswalk.
	:C. They shall display a flashing yellow light when actuated. The flash rate shall be at least 50, but not more than 60, flash periods per minute. If they are flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect, the flickers or pulses shall not repeat at a rate that is between 5 and 30 per second to avoid frequencies that might cause seizures.		:C. They shall display a flashing yellow light when actuated. The flash rate shall be at least 50, but not more than 60, flash periods per minute. If they are flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect, the flickers or pulses shall not repeat at a rate that is between 5 and 30 per second to avoid frequencies that might cause seizures.

TaracksA at 18:22, 6 October 2025

2025-10-06T18:22:45Z

← Older revision		Revision as of 13:22, 6 October 2025
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	[[Category:902 Signals\|902.20]]		[[Category:902 Signals (MUTCD Part 4)\|902.20]]

	=={{SpanID\|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)==		=={{SpanID\|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)==

TaracksA: /* {{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02) */

2025-10-06T18:03:31Z

{{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02)

← Older revision		Revision as of 13:03, 6 October 2025
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	If In-Roadway Warning Lights are used at a crosswalk, the following requirements shall apply:		If In-Roadway Warning Lights are used at a crosswalk, the following requirements shall apply:
	:A. Except as provided in the second paragraph of the ~~eighth~~ and ~~ninth~~ paragraphs of this Article, they shall be installed along both sides of the crosswalk and shall span its entire length.		:A. Except as provided in the second paragraph of the third and fourth option paragraphs of this Article, they shall be installed along both sides of the crosswalk and shall span its entire length.
	:B. They shall initiate operation based on pedestrian actuation and shall cease operation at a predetermined time after the pedestrian actuation or, with passive detection, after the pedestrian clears the crosswalk.		:B. They shall initiate operation based on pedestrian actuation and shall cease operation at a predetermined time after the pedestrian actuation or, with passive detection, after the pedestrian clears the crosswalk.
	:C. They shall display a flashing yellow light when actuated. The flash rate shall be at least 50, but not more than 60, flash periods per minute. If they are flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect, the flickers or pulses shall not repeat at a rate that is between 5 and 30 per second to avoid frequencies that might cause seizures.		:C. They shall display a flashing yellow light when actuated. The flash rate shall be at least 50, but not more than 60, flash periods per minute. If they are flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect, the flickers or pulses shall not repeat at a rate that is between 5 and 30 per second to avoid frequencies that might cause seizures.

TaracksA: /* {{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01) */

2025-10-06T18:02:27Z

{{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)

← Older revision		Revision as of 13:02, 6 October 2025
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	'''Support. '''In-Roadway Warning Lights are special types of highway traffic signals installed in the roadway surface to warn road users that they are approaching a condition on or adjacent to the roadway that might not be readily apparent and might require the road users to reduce their speed and/or come to a stop. This includes situations warning of marked school crosswalks, marked midblock crosswalks, marked crosswalks on uncontrolled approaches, marked crosswalks in advance of roundabouts as described in [[--\|Chapter 3D]], and other roadway situations involving pedestrian crossings.		'''Support. '''In-Roadway Warning Lights are special types of highway traffic signals installed in the roadway surface to warn road users that they are approaching a condition on or adjacent to the roadway that might not be readily apparent and might require the road users to reduce their speed and/or come to a stop. This includes situations warning of marked school crosswalks, marked midblock crosswalks, marked crosswalks on uncontrolled approaches, marked crosswalks in advance of roundabouts as described in [[--\|Chapter 3D]], and other roadway situations involving pedestrian crossings.

	'''Standard. '''In-Roadway Warning Lights shall not be used for any application that is not described in this ~~Chapter~~.		'''Standard. '''In-Roadway Warning Lights shall not be used for any application that is not described in this Article.

	When used, In-Roadway Warning Lights shall be flashed and shall not be steadily illuminated.		When used, In-Roadway Warning Lights shall be flashed and shall not be steadily illuminated.

RollerA: /* {{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02) */

2025-08-27T17:43:38Z

{{SpanID|902.20.2}}902.20.2 In-Roadway Warning Lights at Crosswalks (MUTCD Section 4U.02)

← Older revision		Revision as of 12:43, 27 August 2025
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	If In-Roadway Warning Lights are used at a crosswalk, the following requirements shall apply:		If In-Roadway Warning Lights are used at a crosswalk, the following requirements shall apply:
	:A. Except as provided in the second paragraph of the ~~second option of this Article to the third paragraph of the second option~~ of this Article, they shall be installed along both sides of the crosswalk and shall span its entire length.		:A. Except as provided in the second paragraph of the eighth and ninth paragraphs of this Article, they shall be installed along both sides of the crosswalk and shall span its entire length.
	:B. They shall initiate operation based on pedestrian actuation and shall cease operation at a predetermined time after the pedestrian actuation or, with passive detection, after the pedestrian clears the crosswalk.		:B. They shall initiate operation based on pedestrian actuation and shall cease operation at a predetermined time after the pedestrian actuation or, with passive detection, after the pedestrian clears the crosswalk.
	:C. They shall display a flashing yellow light when actuated. The flash rate shall be at least 50, but not more than 60, flash periods per minute. If they are flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect, the flickers or pulses shall not repeat at a rate that is between 5 and 30 per second to avoid frequencies that might cause seizures.		:C. They shall display a flashing yellow light when actuated. The flash rate shall be at least 50, but not more than 60, flash periods per minute. If they are flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect, the flickers or pulses shall not repeat at a rate that is between 5 and 30 per second to avoid frequencies that might cause seizures.

RollerA: /* {{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01) */

2025-08-25T19:31:26Z

{{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)

← Older revision		Revision as of 14:31, 25 August 2025
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	'''Support. '''Steadily illuminated lights installed in the roadway surface are considered to be internally illuminated raised pavement markers (see [[--\|Section 3B.14]]).'''		'''Support. '''Steadily illuminated lights installed in the roadway surface are considered to be internally illuminated raised pavement markers (see [[--\|Section 3B.14]]).'''

	'''Option. '''In-Roadway Warning Lights may be flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect (see [[--\|EPG 902.20.2]]).		'''Option. '''In-Roadway Warning Lights may be flashed in a manner that includes a continuous flash of varying intensity and time duration that is repeated to provide a flickering effect (see [[902.20 In-Roadway Warning Lights (MUTCD Chapter 4U) #902.20.2\|EPG 902.20.2]]).

	'''Standard. '''If used, In-Roadway Warning Lights shall not exceed a height of ¾ inch above the roadway surface.		'''Standard. '''If used, In-Roadway Warning Lights shall not exceed a height of ¾ inch above the roadway surface.

TaracksA: /* {{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01) */

2025-08-11T10:57:03Z

{{SpanID|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)

← Older revision		Revision as of 05:57, 11 August 2025
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	=={{SpanID\|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)==		=={{SpanID\|902.20.1}}902.20.1 Application of In-Roadway Warning Lights (MUTCD Section 4U.01)==

	'''Support. '''In-Roadway Warning Lights are special types of highway traffic signals installed in the roadway surface to warn road users that they are approaching a condition on or adjacent to the roadway that might not be readily apparent and might require the road users to reduce their speed and/or come to a stop. This includes situations warning of marked school crosswalks, marked midblock crosswalks, marked crosswalks on uncontrolled approaches, marked crosswalks in advance of roundabouts as described in Chapter 3D, and other roadway situations involving pedestrian crossings.		'''Support. '''In-Roadway Warning Lights are special types of highway traffic signals installed in the roadway surface to warn road users that they are approaching a condition on or adjacent to the roadway that might not be readily apparent and might require the road users to reduce their speed and/or come to a stop. This includes situations warning of marked school crosswalks, marked midblock crosswalks, marked crosswalks on uncontrolled approaches, marked crosswalks in advance of roundabouts as described in [[--\|Chapter 3D]], and other roadway situations involving pedestrian crossings.

	'''Standard. '''In-Roadway Warning Lights shall not be used for any application that is not described in this Chapter.		'''Standard. '''In-Roadway Warning Lights shall not be used for any application that is not described in this Chapter.