Design and Simulation Analysis of At-grade Intersection Channelization of City Roads

Original scientific paper Urban road intersections are bottle-necks of urban road networks, and the traffic organization optimization of intersections is the crux to relieve urban traffic jam. After analysing the features, applicable conditions and functions of the intersection channelization design, the basic procedures based on traffic survey, channelization design of the intersections and assessment of channelization plan were finished. Then, the simulation model of the intersection was set up by VISSIM in consideration of problems at a large intersection in a city. Parameters comparison and simulation analysis show that proper measures of channelization at intersections can significantly improve their traffic capacity.