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Development of Guidelines for In-Roadway Warning Lights - VADOT

From LightGuard Systems, Inc.
 

 

An illuminated crosswalk is a relatively new traffic control device that is being used
throughout the nation to alert approaching motorists to the presence of pedestrians in or about to enter the crosswalk. It consists of a series of lighting units encased in durable housings and embedded in the pavement parallel with the marked crosswalk. The lights are activated by a pedestrian, either by pushbutton or passive detection, and are aimed to flash toward approaching traffic. These light systems are known by many names. In deference to the terminology used in the Manual on Uniform Traffic Control Devices for Streets and Highways, this study refers to them as in-roadway warning lights (IRWLs).

The purpose of this research was to develop guidelines for IRWLs that the Virginia
Department of Transportation (VDOT) could use statewide to ensure uniformity. The guidelines include both "planning" and "design" guidelines. Planning guidelines focus on when and where IRWLs are needed or justified. Design guidelines focus on design features of IRWLs and their components. The scope of the research was limited to a review of existing guidelines and of experiences with existing IRWLs.

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Topics of Interest
In response to an unusually high incidence of pedestrian/vehicle collisions, the City of Santa Rosa, California, initiated a new concept in proactive pedestrian warning systems for uncontrolled... (Read More)
Accidents involving pedestrians on crosswalks are a common cause of road fatalities. In-pavement flashing warning lights have been proposed as a means of increasing the conspicuity of a crosswalk when... (Read More)
The University of Illinois at Urbana-Champaign has used in-street pedestrian crossing signs and in-roadway warning lights to improve pedestrian safety. A comprehensive study of crosswalk safety was... (Read More)
If used, In-Roadway Warning Lights at crosswalks shall be installed only at marked crosswalks with applicable warning signs. They shall not be used at crosswalks controlled by YIELD signs, STOP signs,... (Read More)
Many local agencies throughout California have been installing actuated embedded pavement lights adjacent to busy crosswalks. These lights flash only when pedestrians are present to alert approaching... (Read More)