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原文传递 Comparison of Identification and Ranking Methodologies for Speed-Related Crash Locations.

题名：	Comparison of Identification and Ranking Methodologies for Speed-Related Crash Locations.
作者：	BERTINI, R. L.; BOSA, P. G.; CHI, D.; EL-SEOUD, T. A.; MONSERE, C. M.; NOLAN, C.
关键词：	ACCIDENT ANALYSIS; MOTOR VEHICLE ACCIDENTS; SPEED
摘要：	Over 60,000 crashes were reported on the Oregon state highway system from 2000-2002. Of these, speed was a primary causal factor in 27%of total crashes and 36%of all fatal crashes. Excessive speed is a driver behavior that can be influenced by a wide variety of countermeasures. However, different methods for analyzing crash data often result in setting different priorities for safety improvements. The state of Oregon currently does not have a developed methodology for prioritizing locations for review of countermeasure deployment. When making decisions about countermeasure deployment with limited resources, it is important they be allocated to locations that will result in the greatest impact. The objective of this study was to improve the procedures used to select locations for speed-related safety countermeasures. The report includes a literature review focused on the relationship between speed and crashes, as well as past research on speed reduction techniques. An analysis of speed-related crash data indicated that a number of variables such as ice, curves, and others are overrepresented in speed crashes. Based on these findings, the study then developed and compared alternate ranking methods for speed/ice crash locations, including a unique refinement of the rate quality control (RQC) method, using climate data that helps identify road segments that exhibit statistically significant high speed/ice crash patterns. The results of the method were highlighted with a case study of identified highway sections using a new zonal RQC. To demonstrate the feasibility of this analysis technique, the top 20 sites identified by the refined screening technique were reviewed for possible countermeasures.
报告类型：	科技报告