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Development of Guidelines for In-Roadway Warning Lights.
| 题名： | Development of Guidelines for In-Roadway Warning Lights. |
| 作者： | Arnold-E.D. |
| 关键词： | *Traffic-control-devices; *Warning-lights.;Pedestrians-; Motor-vehicle-operators; Crosswalks-; Development-; Design-features; Recommendations-; Virginia-; Guidelines-. |
| 摘要： | 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. |
| 报告类型： | 科技报告 |
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