Literature review on Optimization and Coordination of the Signal Timings

Abstract

Traffic on the existing road increasing due to rapid urbanization and industrialization has caused extremely growth of vehicles all over the world. Due to this, some problems like congestion, delay and pollution remain in question if the signal is not coordinated. The basic function of most arterial streets and roadways is to move traffic safely and efficiently with minimum delay. The main source of delay and congestion along most arterial streets and roadways are traffic signals. Too often motorists are required to make unnecessary stops because adjacent traffic signals bear no relationship to each other. This results in longer travel times and increased vehicle emissions and fuel consumption which reduce air and noise pollution. Coordination of signal is achieved when a platoon achieve green phase at successive intersections. Coordination is done by time space diagram of various cycle lengths.