自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(英文版)

Journal of Central South University

Vol. 20    No. 6    June 2013

[PDF Download]    [Flash Online]

    

Sensitivity analysis of key input parameters in conditional cell transmission model for oversaturated arterials
WANG Ping(王屏)1, S. L. JONES2, YANG Qun(杨群)1, S. GURUPACKIAM2

1. Key Laboratory of Road and Traffic Engineering of Ministry of Education (Tongji University),Shanghai 201804, China;2. Department of Civil, Construction, and Environmental Engineering, University of Alabama,Tuscaloosa 35401, USA

Abstract:A novel conditional cell transmission model (CCTM) is a potential simulation tool because it accommodates all traffic conditions from light condition to oversaturated condition. To test the performance of the CCTM, a series of experiments for sensitivity analysis were designed and performed for a multilane, two-way, three-signal sample network. Experiment 1 shows that the model is performed in a logical and expected manner with variations in traffic demand with time and direction. Experiment 2 shows when the possibility of the occurrence of a useful gap increases to 60% and 100%, the delays in left turns decrease by 5% and 15%, respectively. In Experiment 3, comparing the possibility of a conditional cell of 0 with 100%, delay of left turn and delay of the entire network were underestimated by 58% and 11%, respectively. Hence, sensitivity analysis demonstrates that by reflecting local drivers’ behaviors properly, the CCTM provides an accurate representation of traffic flow in simulating oversaturated traffic conditions.

 

Key words: oversaturation; conditional cell transmission model; sensitivity analysis; delay; possibility

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号