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原文传递 Performance Measurement for Highway Winter Maintenance Operations.

题名：	Performance Measurement for Highway Winter Maintenance Operations.
作者：	L. Qiu; W. Nixon;
关键词：	highway maintenance,winter maintenance;mobility, ice, modeling, frost, average speed, snow, iowa, literature reviews, weather, traffic safety, transportation safety, highway safety, maintenance operations, crash analyses, performance measurements;road sur
摘要：	The goal of this research project was to develop a method to measure the performance of a winter maintenance program with respect to the task of providing safety and mobility to the travelling public. Developing these measures required a number of steps, each of which was accomplished. First, the impact of winter weather on safety (crash rates) and mobility, average vehicle speeds were measured by a combination of literature reviews and analysis of Iowa Department of Transportation traffic and Road Weather Information System data. Second, because not all winter storms are the same in their effects on safety and mobility, a method had to be developed to determine how much the various factors that describe a winter storm actually change safety and mobility. As part of this effort a storm severity index was developed, which ranks each winter storm on a scale between 0 (a very benign storm) and 1 (the worst imaginable storm). Additionally a number of methods of modeling the relationships between weather, winter maintenance actions and road surface conditions were developed and tested. / NOTE: Final rept. / Supplementary Notes: Sponsored by Iowa Dept. of Transportation, Ames. Iowa Highway Research Board. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA.
报告类型：	科技报告