Traffic signal operations near highway–rail grade crossings are important from both safety and mobility perspectives, but practice varies widely. The goal of this synthesis is to document the state of practice of traffic signal preemption deployed at intersections adjacent to highway–rail grade crossings in the United States and Canada. Specific objectives include: • Learning what practices have been used; • Identifying ongoing and recently completed research; and • Learning what problems remain largely unsolved. Methodology for compiling information for this synthesis included a literature search, a survey of U.S. state and Canadian provincial departments of transportation, and the completion of three case studies (Portland, Oregon, and the states of Ohio and California) to determine additional lessons learned, innovations, and gaps in practice. Forty of 49 states and one of three Canadian provinces responded to an e-mailed survey request; in addition, four Canadian provinces not included in the original survey distribution offered information (Figure 1). Hawaii was not included in the survey because the state has no operating freight or passenger railroads system, and the one United States territory.


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    Title :

    Traffic Signal Preemption at Intersections Near Highway–Rail Grade Crossings. National Cooperative Highway Research Program NCHRP Synthesis 507. A Synthesis of Highway Practice


    Contributors:
    T. Urbanik (author) / A. Tanaka (author)

    Publication date :

    2017


    Size :

    86 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English