|Table of Contents|

Optimization design model of one-way traffic for road network(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2012年05期
Page:
72-78
Research Field:
交通运输规划与管理
Publishing date:

Info

Title:
Optimization design model of one-way traffic for road network
Author(s):
YANG Zhong-zhen1 WU Shan-hua1 LUO Hong-hong2 JIAO Xin-long3
1. School of Transportation Management, Dalian Maritime University, Dalian 116026, Liaoning, China; 2. Institute of Scientific and Technical Information of China, Beijing 100038; 3. School of Transportation and Logisltics, Ningbo University of Technology, Ningbo 315211, Zhejiang, China
Keywords:
traffic planning one-way traffic bi-level programming model user equilibrium assignment multi-objective genetic algorithm road section combination feasible solution
PACS:
U491.13
DOI:
-
Abstract:
In order to improve the capacity and service level of road network, a bi-level programming model for one-way traffic was put out. The objective functions of upper-level model were the minimum total trip time, the shortest bypassing distance and the least conflict point number, and the upper-level model was used to solve the optimized scheme of one-way traffic. The lower-level model was user equilibrium traffic assignment model, and was used to calculate the traffic flow characteristic of section in road network from the upper-level model. The methods such as road section combination and feasible solution judgment were put out to decrease the decision variables and the solution space, the multi-objective genetic algorithm was designed to find the solutions, and example analysis was carried out by the data in Weihai City. Analysis result indicates that after the implementation of one-way traffic, the average ratio of vehicle flow to road capacity decreases from 0.516 1 to 0.487 1, and the variance of average ratio reduces from 0.418 9 to 0.379 1. The average trip time of vehicle decreases from 27.1 min to 25.4 min, while the average circumambulated time caused by one-way traffic is only 0.61 min. It is clear that the proposed model can be used in the scheme design of one-way traffic in a medium-sized city. 10 figs, 17 refs.

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Last Update: 2012-11-05