902.25 Glossary - Revision history

Hoskir: Renamed, renumbered and updated article due to MUTCD updates (See Special Ballot)

2026-01-05T17:46:02Z

Renamed, renumbered and updated article due to MUTCD updates (See Special Ballot)

Hoskir: Hoskir moved page 902.18 Glossary to 902.25 Glossary: renumbered and renamed due to MUTCD Update (See Special Ballot)

2026-01-05T17:42:19Z

Hoskir moved page 902.18 Glossary to 902.25 Glossary: renumbered and renamed due to MUTCD Update (See Special Ballot)

← Older revision	Revision as of 12:42, 5 January 2026
(No difference)

Smithk at 14:18, 5 November 2015

2015-11-05T14:18:58Z

← Older revision		Revision as of 09:18, 5 November 2015
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	'''Flashing Operation''' - Signal plan where indications flash either red or yellow instead of cycling solid red-yellow-green.		'''Flashing Operation''' - Signal plan where indications flash either red or yellow instead of cycling solid red-yellow-green.
			<div id="Flashing Yellow Arrow"></div>
	'''Flashing Yellow Arrow''' – Signal indication that tells the driver they are allowed to drive in the direction the arrow is pointing (left or right) but are required to wait for an adequate gap in the opposing traffic prior to making their turn.		'''Flashing Yellow Arrow''' – Signal indication that tells the driver they are allowed to drive in the direction the arrow is pointing (left or right) but are required to wait for an adequate gap in the opposing traffic prior to making their turn.

Smithk: Per Traffic, linked existing archaic definitions to accepted definitions in EPG 900

2013-06-13T13:09:41Z

Per Traffic, linked existing archaic definitions to accepted definitions in EPG 900

← Older revision		Revision as of 08:09, 13 June 2013
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	'''Emission''' - Portion of vehicle exhaust considered hazardous to the environment.		'''Emission''' - Portion of vehicle exhaust considered hazardous to the environment.

	'''Engineering Judgment''' ~~- A decision based on available data and information using engineering knowledge and experience.~~		'''[[:Category:900 TRAFFIC CONTROL#Engineering Judgment\|Engineering Judgment]]'''

	'''Engineering Study''' - An Engineering Study documents the collection and analysis of data for a specific location, a set of locations or an area. The criteria used to determine the data collected and analyzed is based upon engineering judgment and accepted practices. Some sources for accepted practices are: MoDOT Manuals, FHWA and AASHTO Manuals, the MUTCD, the Highway Capacity Manual and publications of ITE, TRB and other organizations with expertise in transportation engineering.		'''[[:Category:900 TRAFFIC CONTROL#Engineering Study\|Engineering Study]]'''

	'''Exclusive Movement''' - A movement at a signal that runs without any other movements being allowed to proceed.		'''Exclusive Movement''' - A movement at a signal that runs without any other movements being allowed to proceed.

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

2012-01-18T14:56:23Z

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

Show changes

Smithk: 902.12 Glossary moved to 902.18 Glossary: Per Traffic, revision to bring policy into substantial compliance with the 2009 MUTCD. (Formerly EPG 902.12 Glossary)

2012-01-18T14:55:04Z

902.12 Glossary moved to 902.18 Glossary: Per Traffic, revision to bring policy into substantial compliance with the 2009 MUTCD. (Formerly EPG 902.12 Glossary)

← Older revision	Revision as of 09:55, 18 January 2012
(No difference)

Smithk: added link

2012-01-09T17:05:30Z

added link

← Older revision		Revision as of 12:05, 9 January 2012
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	'''Channelization''' - Physical separation of traffic movements by positive barrier or markings.		'''Channelization''' - Physical separation of traffic movements by positive barrier or markings.

			<div id="Clear Zone"></div>
	'''[[231.2 Clear Zones\|Clear Zone]]''' - An unobstructed, traversable area provided beyond the edge of the through traveled way for the recovery of errant vehicles.		'''[[231.2 Clear Zones\|Clear Zone]]''' - An unobstructed, traversable area provided beyond the edge of the through traveled way for the recovery of errant vehicles.

Jonesjb: Clarified definition of 'Clear Zone' to more accurately reflect the AASHTO definition.

2012-01-09T16:55:54Z

Clarified definition of 'Clear Zone' to more accurately reflect the AASHTO definition.

← Older revision		Revision as of 11:55, 9 January 2012
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	'''Channelization''' - Physical separation of traffic movements by positive barrier or markings.		'''Channelization''' - Physical separation of traffic movements by positive barrier or markings.

	'''Clear Zone''' - ~~The total roadside border~~ area~~, starting at~~ the edge of the traveled way~~, available~~ for ~~safe use by~~ errant vehicles.		'''[[231.2 Clear Zones\|Clear Zone]]''' - An unobstructed, traversable area provided beyond the edge of the through traveled way for the recovery of errant vehicles.

	'''Clearance Interval''' - The "all red" interval that permits traffic to clear the intersection before conflicting traffic movements are released.		'''Clearance Interval''' - The "all red" interval that permits traffic to clear the intersection before conflicting traffic movements are released.

Smithk: clarification of VPH

2009-07-06T18:45:51Z

clarification of VPH

← Older revision		Revision as of 13:45, 6 July 2009
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	'''Volume Density''' - A process used with detectors located at, or at sufficient distance in advance of, the intersection that makes use of vehicle actuation quantities and time-of-waiting of the vehicles to vary green interval portions for increased capacity and minimized delays.		'''Volume Density''' - A process used with detectors located at, or at sufficient distance in advance of, the intersection that makes use of vehicle actuation quantities and time-of-waiting of the vehicles to vary green interval portions for increased capacity and minimized delays.

	'''VPH-''' Vehicles Per Hour.		'''VPH-''' Vehicles Per Hour, the total number of vehicles passing a given point per hour.

	'''Warrants''' - Criteria used to determine the need for traffic signals or other traffic control devices that presents quantitative procedures to solving many traffic engineering problems.		'''Warrants''' - Criteria used to determine the need for traffic signals or other traffic control devices that presents quantitative procedures to solving many traffic engineering problems.

Smithk: article construction

2008-12-19T18:46:17Z

article construction

← Older revision		Revision as of 13:46, 19 December 2008
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	'''Flashing Operation''' - Signal plan where indications flash either red or yellow instead of cycling solid red-yellow-green.		'''Flashing Operation''' - Signal plan where indications flash either red or yellow instead of cycling solid red-yellow-green.

	'''Flashing Yellow Arrow'''' – Signal indication that tells the driver they are allowed to drive in the direction the arrow is pointing (left or right) but are required to wait for an adequate gap in the opposing traffic prior to making their turn.		[[902.11 Other Design Aspects of Traffic Signals#902.11.28 Guidelines for Optional Use of the Flashing Yellow Arrow at Signalized Intersections\|'''Flashing Yellow Arrow''']] – Signal indication that tells the driver they are allowed to drive in the direction the arrow is pointing (left or right) but are required to wait for an adequate gap in the opposing traffic prior to making their turn.

	'''Force Off''' - A command that will force the termination of the right of way. Used in preemption and coordination.		'''Force Off''' - A command that will force the termination of the right of way. Used in preemption and coordination.