WZSC Glossary


WZSC Glossary composed of MUTCD, NIOSH, OSHA, AASHTO
Browse the glossary using this index

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P

Pace

The 10 mph speed range representing the speeds of the largest percentage of vehicles in the traffic stream. MUTCD 2009 Edition with May 2012 Revisions 1 and 2


Parking Area

A parking lot or parking garage that is separated from a roadway. Parallel or angle parking spaces along a roadway are not considered a parking area. MUTCD 2009 Edition with May 2012 Revisions 1 and 2

Passing Sight Distance

The distance that drivers must be able to see along the road ahead to safely and efficiently initiate and complete passing maneuvers of slower vehicles on two-lane highways using the lane normally reserved for opposing traffic. See also Sight Distance, Stopping Sight Distance, Decision Sight Distance, and Intersection Sight Distance. NCHRP REPORT 605 2008.


Passive Grade Crossing

A grade crossing where none of the automatic traffic control devices associated with an Active Grade Crossing Warning System are present and at which the traffic control devices consist entirely of signs and/or markings. MUTCD 2009 Edition with May 2012 Revisions 1 and 2

Pathway

A general term denoting a public way for purposes of travel by authorized users outside the traveled way and physically separated from the roadway by an open space or barrier and either within the highway right-of-way or within an independent alignment. Pathways include shared-use paths, but do not include sidewalks. MUTCD 2009 Edition with May 2012 Revisions 1 and 2

Pathway Grade Crossing

The general area where a pathway and railroad or light rail transit tracks cross at the same level, within which are included the tracks, pathway, and traffic control devices for pathway traffic traversing that area. MUTCD 2009 Edition with May 2012 Revisions 1 and 2

Paved

A bituminous surface treatment, mixed bituminous concrete, or Portland cement concrete roadway surface that has both a structural (weight bearing) and a sealing purpose for the roadway. MUTCD 2009 Edition with May 2012 Revisions 1 and 2

PCMS

portable changeable message sign MUTCD 2009 Edition with May 2012 Revisions 1 and 2

Pedestrian

A person on foot, in a wheelchair, on skates, or on a skateboard. MUTCD 2009 Edition with May 2012 Revisions 1 and 2

Pedestrian Change Interval

An interval during which the flashing UPRAISED HAND (symbolizing DONT WALK) signal indication is displayed. MUTCD 2009 Edition with May 2012 Revisions 1 and 2


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