United States Department of Transportation
i
Safety and Guidelines for Marked and Unmarked Pedestrian Crosswalks at Unsignalized Intersections in Nevada
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2012-09-01
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[PDF-3.08 MB]
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Abstract:This report examines two aspects of marked and unmarked crosswalks at unsignalized intersections. Firstly, the report assesses the safety performance of marked/unmarked crosswalks in Nevada through comparing pedestrian-related crash rates. In which, a linear regression model is established to estimate pedestrian daily volume. Consistent with previous research, it is found that marked crosswalks do involve higher pedestrian-related crash rates in Nevada. In addition, the report proposes a set of guidelines for marking crosswalks at unsignalized intersections through a comprehensive process. It summarizes existing guidelines including the MUTCD guideline, FHWA guideline and etc. in the literature review. The report further points out that one of the major issues lies in the lack of comprehensive consideration and interpretation of potential factors. Considering safety and mobility effects, it suggests the contribution of each factor to the decision making not only depends on its own value but also the association with other factors. Hence, the report summarizes key impact factors and applies revised multi-criteria analysis methods to develop a Mark/Unmark Choice Tool embedded in the guideline. At last, the proposed guideline is applied in a case study involving field data in Nevada to demonstrate its practicability and feasibility.
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