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原文传递 Traffic Operational Impacts of Higher-Conspicuity Sign. Research rept. Sep 01-Aug 03.

题名：	Traffic Operational Impacts of Higher-Conspicuity Sign. Research rept. Sep 01-Aug 03.
作者：	Gates-T.J.; Hawkins-H.G.; Chrysler-S.T.; Carlson-P.J.; Holick-A.J.
关键词：	Stop-signs; Visibility-; *Fluorescent-materials.;Warnign-signs; Intersections-; Sheeting-; Traffic-signs; Driver-performance; Perception-.
摘要：	Researchers examined the impacts of various higher-conspicuity sign materials on traffic operations and driver behavior. A total of eight applications of micro prismatic materials were evaluated: fluorescent yellow Chevrons, fluorescent yellow Chevron posts, fluorescent yellow Curve signs, fluorescent yellow Ramp Speed signs, fluorescent yellow Stop Ahead signs, fluorescent red Stop signs, flashing red light emitting diodes Stop signs, and a red border on Speed Limit signs. Researchers installed these signs at locations where it was believed that improving sign conspicuity would provide a statistically significant benefit to safety-related traffic operations. Traffic operations data collected before and after the sign upgrades included vehicle speeds, edge line encroachments, and stopping compliance. Overall, the higher-conspicuity applications produced mostly small changes in traffic operations, although many statistically significant beneficial results occurred.
报告类型：	科技报告