Optimization scheme of intersection signal timing based on VISSIM simulation:A case study of Jiangsu Avenue and Jiangchong Road intersection in Lhasa
LIU Cheng
PENG Duo
HE Jianlin
ZHANG Ping
Abstract：As a key node in the urban road network,intersections experience traffic congestion in the context of accelerated urbanization.This study takes the intersection of Jiangsu Avenue and Jiangchong Road in Lhasa as the research object.After obtaining basic data through field surveys,a traffic flow model is constructed using the VISSIM simulation platform,and phase timing optimization is implemented in combination with the Webster signal cycle algorithm.The results show that the optimization plan reduced the core indicators of queue length,maximum queue length,average vehicle delay,and stop delay by 23%,18%,19%,and 25%,respectively.This effectively relieved the congestion pressure at the intersection and significantly improved the traffic operation efficiency of the node.
Keywords：intersectionVISSIMWebstersignal timing
Publication Date：2025-09-25
Pages：4( 20-23 )