Journal of Central South University

, Volume 20, Issue 6, pp 1772–1780 | Cite as

Sensitivity analysis of key input parameters in conditional cell transmission model for oversaturated arterials

  • Ping Wang (王屏)
  • S. L. Jones
  • Qun Yang (杨群)
  • S. Gurupackiam
Article
First Online:
Received:
Accepted:

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 
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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Ping Wang (王屏)
    • 1
  • S. L. Jones
    • 2
  • Qun Yang (杨群)
    • 1
  • S. Gurupackiam
    • 2
  1. 1.Key Laboratory of Road and Traffic Engineering of Ministry of Education (Tongji University)ShanghaiChina
  2. 2.Department of Civil, Construction, and Environmental EngineeringUniversity of AlabamaTuscaloosaUSA

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