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Title: TRAVEL-TIME UNCERTAINTY, DEPARTURE TIME CHOICE, AND THE COST OF MORNING COMMUTES
Accession Number: 00714867
Record Type: Component
Availability: Find a library where document is available Abstract: Existing models of the commuting time-of-day choice were used to analyze the effect of uncertain travel times. Travel time included a time-varying congestion component and a random element specified by a probability distribution. The results from the uniform and exponential probability distributions were compared and the optimal "head-start" time that the commuter chooses to account for travel time variability, that is, a safety margin that determines the probability of arriving late for work, was derived. The model includes a one-time lateness penalty for arriving late as well as the per-minute penalties for early and late arrival that are included by other investigators. It also generalizes earlier work by accounting for the time variation in the predictable component of congestion, which interacts with uncertainty in interesting ways. A brief numerical analysis of the model reveals that uncertainty can account for a large proportion of the costs of the morning commute.
Supplemental Notes: This paper appears in Transportation Research Record No. 1493, Travel Demand Forecasting, Travel Behavior Analysis, Time-Sensitive Transportation, and Traffic Assignment Methods. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01399823
Language: English
Authors: Noland, Robert BSmall, Kenneth APagination: p. 150-158
Publication Date: 1995
Serial: ISBN: 0309061709
Features: References
(38)
; Tables
(5)
TRT Terms: Uncontrolled Terms: Subject Areas: Finance; Highways; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning
Files: TRIS, TRB
Created Date: Dec 8 1995 12:00AM
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