Sensitivity-based uncertainty analysis of transit assignment model

Muqing Du, Anthony Chen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Transit assignment models are particularly useful to systematically access the operation or planning of a transit network. From this perspective, the transit assignment model has been developed and applied for a long time, and various of formulations come out to fulfill different application purposes. In order to analyze the uncertainties in transit network which may be caused by probabilistic travel demand, congestion effect, or transit frequencies, a variational inequality (VI) formulation is employed in this study. It models the passengers' route choice subject to congestion from waiting and in-vehicle time. The hyperpath concept is used to incorporate the passengers' strategy at transit stops. Then, the analytical sensitivity analysis expression is derived for the transit assignment model. Some typical applications of sensitivity analysis results will be discussed in numerical example. Especially, the uncertainties from the travel demand are considered as the random variables with mean and variance. Based on the analytical sensitivity analysis, the uncertainties in the result of transit assignment model will be estimated.

Original languageEnglish
Title of host publicationTransportation Systems in the Connected Era - Proceedings of the 23rd International Conference of Hong Kong Society for Transportation Studies, HKSTS 2018
EditorsWeihua Gu, Shuaian Wang
PublisherHong Kong Society for Transportation Studies Limited
Pages425-433
Number of pages9
ISBN (Electronic)9789881581471
Publication statusPublished - 1 Jan 2018
Event23rd International Conference of Hong Kong Society for Transportation Studies: Transportation Systems in the Connected Era, HKSTS 2018 - Hong Kong, Hong Kong
Duration: 8 Dec 201810 Dec 2018

Publication series

NameTransportation Systems in the Connected Era - Proceedings of the 23rd International Conference of Hong Kong Society for Transportation Studies, HKSTS 2018

Conference

Conference23rd International Conference of Hong Kong Society for Transportation Studies: Transportation Systems in the Connected Era, HKSTS 2018
CountryHong Kong
CityHong Kong
Period8/12/1810/12/18

Keywords

  • Sensitivity Analysis
  • Transit Assignment Model
  • Uncertainty
  • Variational Inequality

ASJC Scopus subject areas

  • Transportation

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