Behaviours in a dynamical model of traffic assignment with elastic demand  

作　　者：徐猛 高自友 

机构地区：[1]School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China

出　　处：《Chinese Physics B》2007年第6期1608-1614,共7页中国物理B（英文版）

摘　　要：This paper investigates the dynamical behaviour of network traffic flow. Assume that trip rates may be influenced by the level of service on the network and travellers are willing to take a faster route. A discrete dynamical model for the day-to-day adjustment process of route choice is presented. The model is then applied to a simple network for analysing the day-to-day behaviours of network flow. It finds that equilibrium is arrived if network flow consists of travellers not very sensitive to the differences of travel cost. Oscillations and chaos of network traffic flow are also found when travellers are sensitive to the travel cost and travel demand in a simple network.This paper investigates the dynamical behaviour of network traffic flow. Assume that trip rates may be influenced by the level of service on the network and travellers are willing to take a faster route. A discrete dynamical model for the day-to-day adjustment process of route choice is presented. The model is then applied to a simple network for analysing the day-to-day behaviours of network flow. It finds that equilibrium is arrived if network flow consists of travellers not very sensitive to the differences of travel cost. Oscillations and chaos of network traffic flow are also found when travellers are sensitive to the travel cost and travel demand in a simple network.

关 键 词：discrete dynamical system network traffic flow traffic assignment problem CHAOS 

分 类 号：U491.112[交通运输工程—交通运输规划与管理]