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Valuing travel time variability: Characteristics of the travel time distribution on an urban road
KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
2012 (English)In: Transportation Research Part C: Emerging Technologies, ISSN 0968-090X, E-ISSN 1879-2359, Vol. 24, 83-101 p.Article in journal (Refereed) Published
Abstract [en]

This paper provides a detailed empirical investigation of the distribution of travel times on an urban road for valuation of travel time variability. Our investigation is premised on the use of a theoretical model with a number of desirable properties. The definition of the value of travel time variability depends on certain properties of the distribution of random travel times that require empirical verification. Applying a range of nonparametric statistical techniques to data giving minute-by-minute travel times for a congested urban road over a period of five months, we show that the standardized travel time is roughly independent of the time of day as required by the theory. Except for the extreme right tail, a stable distribution seems to fit the data well. The travel time distributions on consecutive links seem to share a common stability parameter such that the travel time distribution for a sequence of links is also a stable distribution. The parameters of the travel time distribution for a sequence of links can then be derived analytically from the link level distributions.

Place, publisher, year, edition, pages
2012. Vol. 24, 83-101 p.
Keyword [en]
Nonparametrics, Stable distributions, Travel time distribution, Value of travel time variability
National Category
Transport Systems and Logistics
Identifiers
URN: urn:nbn:se:kth:diva-95733DOI: 10.1016/j.trc.2012.02.008ISI: 000304851800007Scopus ID: 2-s2.0-84858304479OAI: oai:DiVA.org:kth-95733DiVA: diva2:529039
Note

QC 20120529

Available from: 2012-05-29 Created: 2012-05-29 Last updated: 2017-12-07Bibliographically approved

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  • apa
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  • Other style
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  • de-DE
  • en-GB
  • en-US
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  • nn-NB
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  • Other locale
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