Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies (SHRP 2 Prepublication Report*)
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Greetings!
To predict the effects of highway improvement strategies on travel time reliability, SHRP 2 Project L03 (Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies) developed technical relationships between reliability improvement strategies and reliability performance metrics. The final report includes models for predicting nonrecurring congestion using three methods, all based on empirical procedures: The first involved before and after studies; the second was termed a "data poor" approach and resulted in a spare and easy-to-apply set of models; the third was entitled a "data rich model" and used cross-section inputs including data on selected factors known to directly affect nonrecurring congestion.
* To make research available as early as possible, SHRP 2 is temporarily posting final reports that have been submitted by the research team, reviewed according to the relevant National Academy of Sciences procedures, and accepted for publication. These prepublication drafts, which have not been edited or formatted for publication, will be replaced by the final versions as they complete the editorial process.
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