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原文传递 EFFECTS OF A TOWAWAY REPORTING THRESHOLD ON CRASH ANALYSIS RESULTS.

题名：	EFFECTS OF A TOWAWAY REPORTING THRESHOLD ON CRASH ANALYSIS RESULTS.
作者：	Zegeer-CV; Huang-HF; Stewart-JR; Pfefer-R; Wang-J
关键词：	TRAFFIC-ACCIDENT-REPORTING; THRESHOLDS-; TOWAWAYS-; UNDERESTIMATING-; ACCIDENT-TYPES; TRAFFIC-ACCIDENT-ANALYSES; IMPACT-STUDIES
摘要：	The effects on future data analysis capabilities and results should states convert to a towaway and above crash-reporting threshold are quantified. The results from the four states used in the analysis (Illinois, Michigan, Minnesota, and North Carolina) revealed that only 51.7% of the crash data would be included using a towaway threshold. Only 33.7% would be included using an injury threshold. In general, a towaway threshold would exclude more crashes on urban streets than on rural roads. For most road classes, 40% to 60% of crashes would be excluded. A towaway threshold would result in greatly underestimating the occurrence of certain crash types, particularly rear-end, sideswipe, parking, and animal crashes. Run-off-road and angle/turning crashes would also be affected considerably. Using a towaway criterion will seriously affect researchers' ability to conduct meaningful evaluations of roadside appurtenances, such as guardrail, breakaway signs and poles, crash cushions, and various median treatments. For most vehicle types, only 30% to 60% of crashes would be included under a towaway threshold. Technological, institutional, and organizational strategies for improving crash reporting thresholds are suggested.
总页数：	Transportation Research Record. 1998. (1635) pp49-57 (6 Fig., 1 Tab., 3 Ref.)
报告类型：	科技报告