Fosgerau, Mogens and Fukuda, Daisuke (2010): Valuing travel time variability: Characteristics of the travel time distribution on an urban road.
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Fosgerau and Karlstrom [The value of reliability. Transportation Research Part B, Vol. 43 (8–9), pp. 813–820, 2010] presented a derivation of the value of travel time variability (VTTV) with a number of desirable properties. This definition of the VTTV depends on certain properties of the distribution of random travel times that require empirical verification. This paper therefore provides a detailed empirical investigation of the distribution of travel times on an urban road. 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.
|Item Type:||MPRA Paper|
|Original Title:||Valuing travel time variability: Characteristics of the travel time distribution on an urban road|
|Keywords:||value of travel time variability; travel time distribution; nonparametrics; stable distributions;|
|Subjects:||R - Urban, Rural, Regional, Real Estate, and Transportation Economics > R4 - Transportation Economics > R41 - Transportation: Demand, Supply, and Congestion ; Travel Time ; Safety and Accidents ; Transportation Noise|
|Depositing User:||Mogens Fosgerau|
|Date Deposited:||11. Aug 2010 01:04|
|Last Modified:||14. Feb 2013 17:49|
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