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原文传递 Evaluation of Lane Reduction Road Diet Measures on Crashes. Summary Report.

题名：	Evaluation of Lane Reduction Road Diet Measures on Crashes. Summary Report.
作者：	Persaud-B.; Lyon-C.
关键词：	Motor-vehicle-crashes; Land-reductions.;Highways-; Washington-State; Vehicle-accidents; Recommendations-; Iowa-; California-; Research-design; Methodologies-; Data-bases; Tables-Data.
摘要：	This Highway Safety Information System (HSIS) summary replaces an earlier one, Evaluation of Lane Reduction Road Diet Measures and Their Effects on Crashes and Injuries (FHWA-HRT-04-082), describing an evaluation of road diet treatments in Washington and California cities. This summary reexamines those data using more advanced study techniques and adds an analysis of road diet sites in smaller urban communities in Iowa. A road diet involves narrowing or eliminating travel lanes on a roadway to make more room for pedestrians and bicyclists.(1) While there can be more than four travel lanes before treatment, road diets are often conversions of four-lane, undivided roads into three lanestwo through lanes plus a center turn lane (see figure 1 and figure 2). The fourth lane may be converted to a bicycle lane, sidewalk, and/or on- street parking. In other words, the existing cross section is reallocated. This was the case with the two sets of treatments in the current study. Both involved conversions of four lanes to three at almost all sites.
报告类型：	科技报告