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Reliability Assessment on Transit Network Services

Yafeng Yin (Institute of Transportation Studies, University of California, Berkeley, USA)
William H. K. Lam (The Hong Kong Polytechnic University, Hong Kong, P.R. China)
Hitoshi Ieda (Department of Civil Engineering, University of Tokyo, Tokyo, Japan)

The Network Reliability of Transport

ISBN: 978-0-08-044109-2, eISBN: 978-1-78-635954-4

Publication date: 8 May 2003


This paper attempts to assess the transit service reliability with taking into account the interaction between network performance and passengers' travel choice behaviors. Besides the well-known schedule reliability, a waiting-time reliability is newly defined as the probability that the passengers' average waiting time is less than a given threshold. A Monte Carlo simulation approach, which incorporates a stochastic user equilibrium transit assignment model with explicit capacity constraints and elastic frequencies, is proposed to estimate the above two reliability measures of transit service. A numerical example is used to illustrate the applicability of the reliability measures and the proposed approach.



The second author would like to express his gratitude to the Institute of Systems Science of Japan for providing a grant to the Hong Kong Polytechnic University (A/C H-ZF21), which partially supported the work described in this paper.


Yin, Y., Lam, W.H.K. and Ieda, H. (2003), "Reliability Assessment on Transit Network Services", Bell, M.G.H. and Iida, Y. (Ed.) The Network Reliability of Transport, Emerald Group Publishing Limited, Bingley, pp. 119-132.



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