Temecula Implements Citywide Adaptive Traffic Signal Control to Optimize Traffic Flow

McCain’s QuicTrac adaptive control software was implemented to lower congestion and maximize thoroughfare with a system that is easy to understand, and simple to set up and maintain. It was selected for its proven local success and ability to maximize the use of Temecula’s existing infrastructure - detectors, controllers, and central control software. Each arterial was evaluated for current conditions highlighting necessary infrastructure improvements (i.e., separating loop detectors to provide lane-by-lane vehicular data) and signal timing plan updates. New traffic volume counts were collected and analyzed to engineer new coordination plans that served as the base parameters for adaptive operations. At the major freeway access points, yellow yield or one-way communication with Caltrans’ signals was established. Coordination plans were then implemented to clear traffic from the ramp signals onto the main corridors to minimize queuing down the ramps, whereas normal coordination emphasizes only movement along the corridor.