Traffic Measurements on Signalized Arterials from Vehicle Trajectories

Probe data provide rich information of vehicle trajectories which include driving modes (e.g., acceleration/ deceleration) and reflect traffic conditions. However, most of the applications only use probe data to measure travel times. This paper presents two alternative applications of vehicle trajectories on signalized arterials: one is a traffic signal timing estimation and the other is a traffic volume estimation. Both applications are based on a simple methodology that combines vehicle trajectories and traffic engineering concept shock wave . By testing the methodology using real world data, we demonstrate that probe data have more potential for traffic measurements.