Phase and Timing Optimization at Actuated-coordinated Signal Control Intersection

摘要

Ordinarily, an actuated-coordinated signal control intersection has a fixed phase whose order is settled. Each phase has a minimum and maximum green time to fit the traffic’s randomicity and fluctuation. But if the traffic of some phases fluctuate remarkably and if there is little or no traffic comes in certain cycles or periods, the intersection runs the same phase number and order and sets the minimum green time accordingly. This would render the green time as obsolete and increase traffic delays in other phases. This paper considers the influence on drivers as caused by changing phase, optimizes the phase number and order of actuated-coordinated signal control intersection based on fuzzy control theory. It uses the intersection of Daxin Street and North Fourteen Street in Harbin as an example, simulates the intersection’s traffic signal control with Vissim, and estimates the result thus validating the optimized method’s availability and usability.