Estimating travel times and vehicle trajectories on freeways using dual loop detectors

摘要

Recent research has investigated various means of measuring link travel times on freeways. This search has been motivated in part by fact that travel time is considered to be more informative to users than local velocity measurements at a detector station. But direct travel time measurement requires the corre- lation of vehicle observations at multiple locations, which in turn requires new communication infra- structure and/or new detector hardware. This paper presents a method for estimating link travel using data from an individual dual loop detector, without requiring any new hardware.