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原文传递 Incorporating Road Safety Into Pavement Management: Maximizing Surface Friction for Road Safety Improvements.

题名：	Incorporating Road Safety Into Pavement Management: Maximizing Surface Friction for Road Safety Improvements.
作者：	noyce, d. a. bahia, h. u. yambo, j. chapman, j. bill, a.
关键词：	asphalt pavements, skid friction, wisconsin, motor vehicle crashes, wet pavements, highway maintenance, monitoring
摘要：	This research explored the relationship between asphalt mix design, skid friction, and roadway safety. Initial tasks attempted to find a relationship between pavement skid resistance (friction) and crash frequency, particularly wet weather crashes. Friction and crash data collected over 10 years at six study sites in Wisconsin were analyzed. The results of the analysis did not indicate a relationship between crash frequency and pavement skid friction. Although some evidence suggests that the number of wet pavement crashes increased as the pavement life increased (and skid friction values decreased), the frequency of crashes was not sufficient to statistically support. Nevertheless, the fact that the relationship seems to behave inversely proportional, that is to say more crashes occurred at low friction numbers (FNs), is an important indication that skid resistance may indeed be a factor affecting wet weather crashes. It was not possible to determine a skid friction threshold value that indicates the critical point where pavement maintenance would be needed. Although the data obtained in the research could not support a specific value, it is clear that friction values less than 35 are problematic from a safety standpoint. A possible indicator of friction on high-speed roadways is macrotexture. / NOTE: Final rept. Aug 03-Jun 07. / Supplementary Notes: Prepared in cooperation with Wisconsin Univ., Madison. Dept. of Civil and Environmental Engineering. Sponsored by Wisconsin Dept. of Transportation, Madison. / 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 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0723；241p
报告类型：	科技报告