Establishing definitions and modeling public transport travel time variability

Kieu, Le Minh, Bhaskar, Ashish, & Chung, Edward (2014) Establishing definitions and modeling public transport travel time variability. In Transportation Research Board 93rd Annual Meeting, 12-16 January 2014, Washington, D.C.


Public transport travel time variability (PTTV) is essential for understanding deteriorations in the reliability of travel time, optimizing transit schedules and route choices. This paper establishes key definitions of PTTV in which firstly include all buses, and secondly include only a single service from a bus route. The paper then analyses the day-to-day distribution of public transport travel time by using Transit Signal Priority data. A comprehensive approach using both parametric bootstrapping Kolmogorov-Smirnov test and Bayesian Information Creation technique is developed, recommends Lognormal distribution as the best descriptor of bus travel time on urban corridors. The probability density function of Lognormal distribution is finally used for calculating probability indicators of PTTV. The findings of this study are useful for both traffic managers and statisticians for planning and researching the transit systems.

Impact and interest:

2 citations in Web of Science®
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ID Code: 66570
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: public transport, travel time variability, travel time distribution, probability indicator, reliability
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > Research Centres > Smart Transport Research Centre
Copyright Owner: Copyright 2014 Please consult the authors
Deposited On: 22 Jan 2014 22:19
Last Modified: 09 Apr 2014 15:11

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