PROPOSED TRAFFIC LIGHT VARIABLE TIME SCHEDULING ALGORITHM DEPENDENT ON VEHICLE VOLUME

Abstract

This paper studies the flow of vehicular traffic in an intersection and proposes an algorithm to improve the volume of vehicle crossing it. Fixed-time schedule is a standard setup for regular traffic light systems that becomes inefficient when the green light time allotted is much greater than the time it takes for the actual number of vehicles to cross the intersection. This work considers the traffic flow in a six-lane four-way intersection and proposes a variable timing algorithm to improve the efficiency of vehicles crossing compared to a fixed-time schedule. The proposed adaptive algorithm takes into account the number of vehicles in queue to derive the green time to be set for each of the lane. Simulation results under various conditions (varying vehicle volume vehicles per lane as well as varying the traffic flow scheme) showed that the proposed variable-timing has significant improvement over fixed-timing schedule in terms of the total time it took to let all the vehicles in queue cross the intersection.

Keywords

• adaptive
• intersection
• traffic control
• variable timing
• vehicle volume