TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L03 has released a prepublication, non-edited draft version of a report titled Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies that explored predictive relationships between highway improvements and travel time reliability. The research focused primarily on urban freeway sections although some attention was given to rural highways and urban arterials. The 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 parsimonious and easy-to-apply set of models, and the third was entitled a “data rich model” and used cross-section inputs including data on selected factors known to directly affect nonrecurring congestion. (Author/publisher)
Samenvatting