Traveler Behavior Optimization in City Road Network Rebuilding

Abstract

During the transformation of city road network, with the change of the local road network capacity and the section nature, the road capacity is affected, travel time is changed, the traveler's route choice behavior changes too. The travel time characteristics under different conditions are discussed based on the basic travel behavior characteristics research during the city road network reconstruction. Mining the state and The relationship between the reliability of travel time, traveler route choice behavior and road network capacity is studied. The research has values on traffic control and management, especially when city road is being rebuild. With the size and population expanding of city, large cities becoming more and more congestion, road network needs to be optimized. How to maintain traffic flow smoothly is a big problem during the road network reconstruction. In order to maintain traffic flow smoothly during the road network reconstruction, the travelers' psychology and action need to know clearly when they were not under normal traffic conditions and their traffic choice behavior will affect the local road network operation even in a whole. So it is very necessary to discuss road network capacity, travelers path selection behavior, and relationship between travel time and the other parameters. And traveler behavior regularity should be studied too to keep road network effective. 1. The Traveler Behavior Characteristics in Road Network Rebuilding During city road network transformation period, the local even the whole network operation is affected. Travelers' psychology subject to certain interference, their travel behavior appear difference from the normal state. These characters are as follows: (1) The traffic flow's spatial-temporal heterogeneity: in network transformation period, local sections or interval exists the problem of traffic congestion, cause traveler abnormal travel psychology and behavior. This will easily cause the adjacent traffic flow suddenly scattered and suddenly collected, and the situation is obvious space-time inhomogeneity. (2)The short-term change of traveler psychology: during network transformation, some road sections can be limited for travel, causing local road network interruption, this make traveler's psychology changed. The travelers will optimize their road selections based on individual cognition and intelligent transportation system. (3) The expected shortest travel time in psychology: travel space and time