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A vibrant Seattle through transportation excellence Interim Director, Goran Sparrman

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Pavement Markings

According to the Manual on Uniform Traffic Control Devices (MUTCD) published by the U.S. Department of Transportation Federal Highway Administration (FHWA), Markings on highways have important functions in providing guidance and information for the road user. Major marking types include pavement and curb markings, object markers, delineators, colored pavements, barricades, channelizing devices and islands. Specific pavement markings related to pedestrian facilities include crosswalk markings, advanced stop lines as well as colored curb markings on medians or pedestrian crossing islands. According to the MUTCD,

"[c]rosswalk markings provide guidance for pedestrians who are crossing roadways by defining and delineating paths on approaches to and within signalized intersections, and on approaches to other intersections where traffic stops. Crosswalk markings also serve to alert road users of a pedestrian crossing point across roadways not controlled by highway traffic signals or STOP signs. At nonintersection locations, crosswalk markings legally establish the crosswalk (Section 7C.03)"

Advanced stop lines are installed to guide vehicles to stop a certain distance prior to a crosswalk. If placed far enough back, advanced stop lines can increase pedestrian visibility to motor vehicles as well as offer pedestrians more time to react to vehicles that do not stop, especially at multi-lane crossings. Colored curb markings for medians or crossing islands (MUTCD specifies retro-reflective white or yellow material) warn drivers about the presence of these facilities.

Pavement Markings: Advanced Stop Line

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