Next Generation Traffic Light System

Albarazi, Khaldoun, Fadi Sadeeh, Utayba Mohammed, and Nizar Al-Holou

National statistics of NHTSA have reported that more than 22% of all crashes in 2007 in the U.S. resulted from intersection collisions. Moreover, the highest percentage of pedestrians killed or injured resulted from improper crossing of roadway or intersection. On the other hand, designing a dynamic traffic light to reduce traffic jam and fuel consumption has become a priority.

To improve safety and efficiency in intersections, we propose Next Generation Traffic Light System (NG-TLS). In NG-TLS, traffic light will act as an intelligent unit by interacting with coming vehicles and providing advisory information to drivers. NG-TLS has safety features such as congestion reduction, collision avoidance, and emergency vehicle. The system is based on vehicle-infrastructure integration (VII/Intelli-Drive). In this mode, the traffic light, serving as a road side unit (RSU) which can communicate with vehicles, which use on-board units (OBU), wirelessly.

Multiple intersection scenarios with an embedded algorithm are evaluated using Vehicle-Infrastructure Integration Laboratory (VIILAB) simulation environment. We are planning to integrate GPS information to the simulation environment as a Hardware-In-The-Loop to validate some scenarios by using virtual and real data. Some of the simulation results and performance measurements will be presented.