Additive measures of travel time variability |
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| Authors: | Leonid Engelson Mogens Fosgerau |
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| Institution: | a The Royal Institute of Technology, Division of Transport and Location Analysis and Centre for Transport Studies, Stockholm 10044, Sweden
b Technical University of Denmark, Centre for Transport Studies, Sweden Ecole National Supérieure de Cachan, France |
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| Abstract: | This paper derives a measure of travel time variability for travellers equipped with scheduling preferences defined in terms of time-varying utility rates, and who choose departure time optimally. The corresponding value of travel time variability is a constant that depends only on preference parameters. The measure is unique in being additive with respect to independent parts of a trip. It has the variance of travel time as a special case. Extension is provided to the case of travellers who use a scheduled service with fixed headway. |
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| Keywords: | Travel time variability Scheduling preferences Reliability Additivity |
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