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原文传递 Systemwide Impact of Safety and Traffic Operations Design Decisions for 3R Projects Documentation.

题名：	Systemwide Impact of Safety and Traffic Operations Design Decisions for 3R Projects Documentation.
关键词：	Safety-effectiveness; Transportation-technology; *Resurfacing-projects.;Systemwide-safety; CD-ROM-.
摘要：	This report presents the findings of a research project to develop a resource allocation process that optimizes systemwide safety for a set of potential resurfacing projectswhile not exceeding a specified improvement budget. The project objective has been accomplished with the development of the Resurfacing Safety Resource Allocation Program (RSRAP), which is provided on CD-ROM with this report. The report will be of particular interest to planning/design engineers with responsibility for determiningthe level of safety enhancements that can be included within a specified improvement budget. The RSRAP uses an optimization process based on integer programming to determine which improvement alternatives (or combinations of alternatives) would optimize the benefits for a specified set of improvement projects. The goal ofthe optimization process is not to optimize safety at any particular site but to optimize systemwide safety for a given set of resurfacing projects while not exceeding a user-specified improvement budget. RSRAP can be used to evaluate trade-offs between expenditures for resurfacing and safety improvements. It can also be used to evaluate trade-offs among alternative safety improvements for a set of projects for which a decision to resurface the pavement has already been made. The safety effectiveness of alternative improvements is estimated from the results of the best available safety research. The priority assigned to resurfacing is based on a user-supplied estimate of the time remaining before resurfacing is necessary to avoid a complete pavement failure (i.e., a failure that requires the pavement structure to be replaced down to the subgrade), ehich involves a large and unnecessary cost to the public. RSRAP has been developed to be applicable to any improvement program that involves resurfacing and safety improvements on nonfreeway facilities.
报告类型：	科技报告