Concern for railroad-highway grade crossing safety prompted the Department of Transportation to develop and implement more effective protective systems. The purpose of the study was to provide a data base reflecting the behavior of motorists in the vicinity of crossings. Crossing parameters of urban/rural, two/four lane, high/low volume and active/passive grade crossing protection were considered in the selection of 26 crossings for instrumentation. At each site, the highway was instrumented at five points in each lane using the Traffic Evaluator System. The resulting magnetic tape permitted determination for each of over 40,000 vehicles at each point, speed, lane changing behavior, headway, wheelbase, and number of axles. Manual inputs were made to the system to indicate vehicles which were required to stop at the crossing, the activation of protective devices, the arrival and departure of trains, and train speed. The data base was organized to verify and improve an existing traffic flow model designed to provide information on motorist speed and time delay at crossings.
Speed Profiles and Time Delay at Rail-Highway Grade Crossings
1972
152 pages
Report
No indication
English
Transportation Safety , Railroads , Intersections , Traffic surveys , Highways , Traffic safety , Time lag , Vehicular traffic , Traffic engineering , Motor vehicles , Mathematical models , Urban areas , Rural areas , Velocity measurement , Buses(Vehicles) , Data processing , Collision avoidance , Accident prevention , Vehicle delay , Railroad highway grade crossings , Traffic flow
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