Analyse Research on Signal Control Based on Traffic Capacity of Urban Road Annular Intersection

Compared with ordinary plane intersection,the annular intersection has some advantages such as less conflict points,more continuous traffic flow,better safety and easier to control.So it has been implemented in many urban roads.However,with the rapid increase of urban road transport demand,the capacity of annular intersection is unable to meet the demand.This paper introduces an effective way to solve the problems based on signal control,which effectively uses the time and spatial resources of the annular intersections and maximizes the capacity.