Abstract
Traffic light control and coordination is a critical function in today's busy roadways. Typically traffic lights have been shifting from fixed timing to ones that are based on a variety of sensors. However, several shortcomings have been identified when considering these different approaches. In this paper, we propose a scheme for smart dynamic traffic lights that can adapt their signaling time according to the traffic density by exploiting Direction of Arrival (DoA) and Timing Advance information transmitted from cell-phones(carried by the car drivers)to the Smart Antenna installed on cellular base stations. The OTSAT is designed to address these challenges as it adaptively controls the traffic light timings. It dynamically manages the different traffic patterns and has the potential to attain the queuing reduction efficiency from 22% to 100% depending upon different traffic scenarios. Consequently, such an approach would reduce fuel consumption and pollution by avoiding queue (idling) on traffic lights.