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原文传递 Warrants, Design, and Safety of Road Ranger Service Patrols

题名：	Warrants, Design, and Safety of Road Ranger Service Patrols
作者：	Srinivasan, S.; Carrick, G.; Yin, Y.; Jermprapai, K.; Sun, X.; Shirmohammadi, N.; Shahabi, M.
关键词：	Road rangers##Highway Safety Manual(HSM)##Warrants##Predictive models##Beat design##Safety##Safety Service Patrol (SSP) programs##Recommendation##Florida Department of Transportation (FDOT)##
摘要：	This research project created a decision support system for managers who must decide if a roadway “warrants” the addition of the Safety Service Patrol (SSP). Meetings with Florida Department of Transportation (FDOT) service patrol program managers and a survey of national state poiodels that predict nts of contact for service patrols provided insight into critical factors that might contribute to guidelines. Historical incidents from Florida fed mincidents and crashes on candidate roadways, using proven negative-binomial regression models like those found in the Highway Safety Manual. Qualitative and quantitative thresholds for critical factors were established in the form of rules in decision tables that when evaluated, render recommended actions for SSP decisions. A computer tool was developed to facilitate the input of critical information about roadway segments necessary for the analysis. Where warranted, the tool also provides guidance on beat configuration and number of trucks recommended. While the safety benefits of SSP have been researched, this research is among the first to evaluate safety of SSP operations, based on crash data and operator surveys. A set of concrete recommendations to improve SSP safety and/or additional research are important products of this project
总页数：	143
报告类型：	科技报告