EVALUATION OF THE EFFECT OF DRGS USING TRAFFIC FLOW SIMULATION SYSTEM

There has been much research in recent years on dynamic route guidance systems (DRGS), which use dynamic information to alleviate chronic traffic congestion, and on traffic flow simulation systems to verify the effectiveness of DRGS. There are two types of traffic flow simulation systems: microsimulation systems designed for traffic networks with several intersections within a confined area and macrosimulation systems for relatively larger areas. DRGS simulation using a specific origin-destination (OD) in a large metropolitan area was then conducted to evaluate the effect on the average travel time for the rate of vehicles using DRGS, the communication delay of dynamic information, and the renewal cycle of guidance information. Next, to evaluate the effect of traffic assignment at the high rate of vehicles using DRGS, a simulation is conducted in which two routes set in advance are given to each OD pair, and that the vehicles using DRGS are assigned to these two routes in turns. Finally, a method for estimating an OD pattern whereby trip generation is not biased was developed based on actual traffic volume, and simulations generating a large traffic volume were run based on this method.