Abstract
This paper presents a decision-making framework based on a travel time reliability methodology developed under the U.S. Strategic Highway Research Program. Existing methods consider a set of predefined prevailing conditions for the analysis of freeway facilities as the base case. However, a reliability analysis accounts for multiple recurring and nonrecurring congestion sources to estimate the travel time distribution over a long time horizon. This approach considers variations in traffic demand levels, inclement weather conditions, and incidents that occur stochastically on a freeway facility. Several performance measures are defined based on the travel time distribution, which comprehensively cover the full range of operational conditions on the system. Based on the proposed decision-making framework, mobility strategies can be identified, evaluated, and improved.
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Acknowledgments
The authors acknowledge the financial support of the SHRP2-L08 project Incorporation of travel time reliability into the highway capacity manual. We also acknowledge the efforts of several researchers and graduate students for their contributions to this research.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 142 • Issue 4 • April 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 4, 2014
Accepted: Jun 15, 2015
Published online: Jan 13, 2016
Published in print: Apr 1, 2016
Discussion open until: Jun 13, 2016
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