902.18 Flashing Beacons (MUTCD Chapter 4S) - Revision history

HogsettC: /* {{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02) */

2025-12-01T16:05:21Z

{{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02)

← Older revision		Revision as of 11:05, 1 December 2025
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	{{SpanID\|fig902.18.2}}		{{SpanID\|fig902.18.2}}
	[[File:Figure 902.18.2 Typical Intersection Control Beacon Configuration.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]		[[File:Figure 902.18.2 Typical Intersection Control Beacon Configuration.png\|alt="Two intersection diagrams are shown side-by-side, illustrating typical flasher layouts. Each diagram uses black circles to represent flasher signal locations and black triangular arrows to represent the direction of travel and turning movements.
			On the left diagram, a diagonal series of arrows and flasher locations indicating left-turn (center lane), through, and right-turn movements.
			On the right diagram, a similar diagonal flasher line runs from the lower left to the upper right, with flasher locations and arrows including a left-turn arrow in the center lane."
			\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]

	=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==		=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==

WilkeJ: /* {{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03) */

2025-12-01T03:02:44Z

{{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)

← Older revision		Revision as of 22:02, 30 November 2025
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	:C. As emphasis for midblock crosswalks;		:C. As emphasis for midblock crosswalks;
	:D. As supplemental emphasis to regulatory signs, except STOP, DO NOT ENTER, WRONG WAY, and SPEED LIMIT signs; and		:D. As supplemental emphasis to regulatory signs, except STOP, DO NOT ENTER, WRONG WAY, and SPEED LIMIT signs; and
	:E. In conjunction with a regulatory sign that includes the phrase WHEN FLASHING in its legend to indicate that the regulation is in effect. [[903.1 General (MUTCD Chapter 2A) #903.1.12\|EPG 903.1.12]] prohibits the use of flashing light-emitting diode (LED) units within the legend or border of the sign in conjunction with the phrase WHEN FLASHING in its legend.		:E. In conjunction with a regulatory sign that includes the phrase WHEN FLASHING in its legend to indicate that the regulation is in effect or that the condition is present only at certain times. [[903.1 General (MUTCD Chapter 2A) #903.1.12\|EPG 903.1.12]] prohibits the use of flashing light-emitting diode (LED) units within the legend or border of the sign in conjunction with the phrase WHEN FLASHING in its legend.

	'''Standard. '''A Warning Beacon shall consist of one or more signal sections of a standard traffic signal face with a flashing CIRCULAR YELLOW signal indication in each signal section.		'''Standard. '''A Warning Beacon shall consist of one or more signal sections of a standard traffic signal face with a flashing CIRCULAR YELLOW signal indication in each signal section.

WilkeJ: /* {{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03) */

2025-11-30T21:26:56Z

{{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)

← Older revision		Revision as of 16:26, 30 November 2025
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	:C. As emphasis for midblock crosswalks;		:C. As emphasis for midblock crosswalks;
	:D. As supplemental emphasis to regulatory signs, except STOP, DO NOT ENTER, WRONG WAY, and SPEED LIMIT signs; and		:D. As supplemental emphasis to regulatory signs, except STOP, DO NOT ENTER, WRONG WAY, and SPEED LIMIT signs; and
	:E. In conjunction with a regulatory ~~or warning~~ sign that includes the phrase WHEN FLASHING in its legend to indicate that the regulation is in effect ~~or that the condition is present only at certain times~~. [[903.1 General (MUTCD Chapter 2A) #903.1.12\|EPG 903.1.12]] prohibits the use of flashing light-emitting diode (LED) units within the legend or border of the sign in conjunction with the phrase WHEN FLASHING in its legend.		:E. In conjunction with a regulatory sign that includes the phrase WHEN FLASHING in its legend to indicate that the regulation is in effect. [[903.1 General (MUTCD Chapter 2A) #903.1.12\|EPG 903.1.12]] prohibits the use of flashing light-emitting diode (LED) units within the legend or border of the sign in conjunction with the phrase WHEN FLASHING in its legend.

	'''Standard. '''A Warning Beacon shall consist of one or more signal sections of a standard traffic signal face with a flashing CIRCULAR YELLOW signal indication in each signal section.		'''Standard. '''A Warning Beacon shall consist of one or more signal sections of a standard traffic signal face with a flashing CIRCULAR YELLOW signal indication in each signal section.

RollerA: /* {{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02) */

2025-11-25T18:14:49Z

{{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02)

← Older revision		Revision as of 13:14, 25 November 2025
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	{{SpanID\|fig902.18.2}}		{{SpanID\|fig902.18.2}}
	[[File:~~4S-Signals-~~.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]		[[File:Figure 902.18.2 Typical Intersection Control Beacon Configuration.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]

	=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==		=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==

HogsettC: /* {{SpanID|902.18.1}}902.18.1 General Design and Operation of Flashing Beacons (MUTCD Section 4S.01) */

2025-11-21T14:22:19Z

{{SpanID|902.18.1}}902.18.1 General Design and Operation of Flashing Beacons (MUTCD Section 4S.01)

← Older revision		Revision as of 09:22, 21 November 2025
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	Beacons shall be flashed at a rate of not less than 50 or more than 60 times per minute. The illuminated period of each flash shall be a minimum of ½ and a maximum of ⅔ of the total cycle.		Beacons shall be flashed at a rate of not less than 50 or more than 60 times per minute. The illuminated period of each flash shall be a minimum of ½ and a maximum of ⅔ of the total cycle.

	A beacon shall not be included within the border of a sign except for Interchange Exit Direction signs with advisory speed panels (see [[--\|~~Section 2E~~.25]]).		A beacon shall not be included within the border of a sign except for Interchange Exit Direction signs with advisory speed panels (see [[903.5 Guide Signs - Freeways and Expressways (MUTCD Chapter 2E) #903.5.25\|EPG 903.5.25]]).

	All flashing beacon signal indications shall be 12 inches in diameter.		All flashing beacon signal indications shall be 12 inches in diameter.

HogsettC: /* {{SpanID|902.18.7}}902.18.7 Procedures for Advance Beacon Installations by Outside Parties */

2025-11-20T18:17:37Z

{{SpanID|902.18.7}}902.18.7 Procedures for Advance Beacon Installations by Outside Parties

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	=={{SpanID\|902.18.7}}902.18.7 Procedures for Advance Beacon Installations by Outside Parties==		=={{SpanID\|902.18.7}}902.18.7 Procedures for Advance Beacon Installations by Outside Parties==

	'''Standard. '''Advance beacons such as school warning, school speed limit, and emergency vehicle warning beacons are installed under contract. The district will obtain appropriate signed contracts and will follow execution guidelines in [[--\|EPG 153.21 ~~Traffic~~]]. These contracts deal with the installation and transfer of ownership of the installation from the outside party to the Commission.		'''Standard. '''Advance beacons such as school warning, school speed limit, and emergency vehicle warning beacons are installed under contract. The district will obtain appropriate signed contracts and will follow execution guidelines in [[153.21 Traffic #153.21\|EPG 153.21]]. These contracts deal with the installation and transfer of ownership of the installation from the outside party to the Commission.

	'''Support. '''The following standard contracts are available:		'''Support. '''The following standard contracts are available:

WilkeJ: /* {{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03) */

2025-11-11T20:21:54Z

{{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)

← Older revision		Revision as of 15:21, 11 November 2025
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	'''Option. '''Warning Beacons may be installed in conjunction with School Zone signing (See [[908.2 Signs (MUTCD Chapter 7B) #908.12.2\|EPG 908.2.2]]) at the request of the school district and at their cost.		'''Option. '''Warning Beacons may be installed in conjunction with School Zone signing (See [[908.2 Signs (MUTCD Chapter 7B) #908.12.2\|EPG 908.2.2]]) at the request of the school district and at their cost.

	Warning Beacons may be installed in conjunction with Emergency Vehicle (W11-8) signs (See [[--\|~~Section 2C~~.54]]) at the request of the emergency vehicle service district and at their cost.		Warning Beacons may be installed in conjunction with Emergency Vehicle (W11-8) signs (See [[903.3 Warning Signs and Object Markers (MUTCD Chapter 2C)#903.3.44\|903.3.44]]) at the request of the emergency vehicle service district and at their cost.

	'''Standard. '''Warning Beacons installed in conjunction with school zone signing shall only operate when there is activity at the school.		'''Standard. '''Warning Beacons installed in conjunction with school zone signing shall only operate when there is activity at the school.

	'''Support. '''Emergency vehicle Warning Beacons are set up to operate only when emergency vehicles are exiting the station or garage on a duly authorized emergency run. These Warning Beacons enhance the meaning of the advanced signing by only flashing when emergency activity is occurring.		'''Support. '''Emergency vehicle Warning Beacons are set up to operate only when emergency vehicles are exiting the station or garage on a duly authorized emergency run. These Warning Beacons enhance the meaning of the advanced signing by only flashing when emergency activity is occurring.

	~~See [[#902.18.7\|EPG 902.18.7]] for additional information regarding school and emergency vehicle Warning Beacons.~~

	=={{SpanID\|902.18.4}}902.18.4 Speed Limit Sign Beacon (MUTCD Section 4S.04)==		=={{SpanID\|902.18.4}}902.18.4 Speed Limit Sign Beacon (MUTCD Section 4S.04)==

RollerA: /* {{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02) */

2025-11-05T21:27:25Z

{{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02)

← Older revision		Revision as of 16:27, 5 November 2025
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	Flashing yellow signal indications shall not face conflicting vehicular approaches.		Flashing yellow signal indications shall not face conflicting vehicular approaches.

	A STOP sign (see [[903.2 Regulatory Signs and Barricades #903.2.4\|EPG 903.2.4]]) shall be used on approaches to which a flashing red signal indication is displayed on an Intersection Control Beacon.		A STOP sign (see [[903.2 Regulatory Signs and Barricades (MUTCD Chapter 2B) #903.2.4\|EPG 903.2.4]]) shall be used on approaches to which a flashing red signal indication is displayed on an Intersection Control Beacon.

	If two horizontally-aligned red signal indications are used on an approach for an Intersection Control Beacon, they shall be flashed simultaneously to avoid being confused with grade crossing flashing-light signals. If two vertically-aligned red signal indications that have a physical separation between them are used on an approach for an Intersection Control Beacon, they shall be flashed alternately.		If two horizontally-aligned red signal indications are used on an approach for an Intersection Control Beacon, they shall be flashed simultaneously to avoid being confused with grade crossing flashing-light signals. If two vertically-aligned red signal indications that have a physical separation between them are used on an approach for an Intersection Control Beacon, they shall be flashed alternately.

RollerA: /* {{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03) */

2025-11-05T18:42:10Z

{{SpanID|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)

← Older revision		Revision as of 13:42, 5 November 2025
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	:C. As emphasis for midblock crosswalks;		:C. As emphasis for midblock crosswalks;
	:D. As supplemental emphasis to regulatory signs, except STOP, DO NOT ENTER, WRONG WAY, and SPEED LIMIT signs; and		:D. As supplemental emphasis to regulatory signs, except STOP, DO NOT ENTER, WRONG WAY, and SPEED LIMIT signs; and
	:E. In conjunction with a regulatory or warning sign that includes the phrase WHEN FLASHING in its legend to indicate that the regulation is in effect or that the condition is present only at certain times. [[903.1 General #903.1.12\|EPG 903.1.12]] prohibits the use of flashing light-emitting diode (LED) units within the legend or border of the sign in conjunction with the phrase WHEN FLASHING in its legend.		:E. In conjunction with a regulatory or warning sign that includes the phrase WHEN FLASHING in its legend to indicate that the regulation is in effect or that the condition is present only at certain times. [[903.1 General (MUTCD Chapter 2A) #903.1.12\|EPG 903.1.12]] prohibits the use of flashing light-emitting diode (LED) units within the legend or border of the sign in conjunction with the phrase WHEN FLASHING in its legend.

	'''Standard. '''A Warning Beacon shall consist of one or more signal sections of a standard traffic signal face with a flashing CIRCULAR YELLOW signal indication in each signal section.		'''Standard. '''A Warning Beacon shall consist of one or more signal sections of a standard traffic signal face with a flashing CIRCULAR YELLOW signal indication in each signal section.

	A Warning Beacon shall be used only to supplement an appropriate warning or regulatory sign or marker.		A Warning Beacon shall be used only to supplement an appropriate warning or regulatory sign or marker.

TaracksA: /* {{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02) */

2025-10-29T22:02:24Z

{{SpanID|902.18.2}}902.18.2 Intersection Control Beacon (MUTCD Section 4S.02)

← Older revision		Revision as of 17:02, 29 October 2025
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	{{SpanID\|fig902.18.2}}		{{SpanID\|fig902.18.2}}
	[[File:4S-Signals-.~~jpg~~\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]		[[File:4S-Signals-.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]

	=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==		=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==

← Older revision		Revision as of 11:05, 1 December 2025
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	{{SpanID\|fig902.18.2}}		{{SpanID\|fig902.18.2}}
	[[File:Figure 902.18.2 Typical Intersection Control Beacon Configuration.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]		[[File:Figure 902.18.2 Typical Intersection Control Beacon Configuration.png\|alt="Two intersection diagrams are shown side-by-side, illustrating typical flasher layouts. Each diagram uses black circles to represent flasher signal locations and black triangular arrows to represent the direction of travel and turning movements.
			On the left diagram, a diagonal series of arrows and flasher locations indicating left-turn (center lane), through, and right-turn movements.
			On the right diagram, a similar diagonal flasher line runs from the lower left to the upper right, with flasher locations and arrows including a left-turn arrow in the center lane."
			\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]

	=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==		=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==

← Older revision		Revision as of 13:14, 25 November 2025
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	{{SpanID\|fig902.18.2}}		{{SpanID\|fig902.18.2}}
	[[File:~~4S-Signals-~~.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]		[[File:Figure 902.18.2 Typical Intersection Control Beacon Configuration.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]

	=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==		=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==

← Older revision		Revision as of 17:02, 29 October 2025
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	{{SpanID\|fig902.18.2}}		{{SpanID\|fig902.18.2}}
	[[File:4S-Signals-.~~jpg~~\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]		[[File:4S-Signals-.png\|thumb\|center\|1000px\|'''Figure 902.18.2''' Typical Intersection Control Beacon Configuration]]

	=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==		=={{SpanID\|902.18.3}}902.18.3 Warning Beacon (MUTCD Section 4S.03)==