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原文传递 Influence of Speed Limits on Roadway Safety in Indiana. Final rept.

题名：	Influence of Speed Limits on Roadway Safety in Indiana. Final rept.
作者：	Malyshkina-N.V.; Mannering-F.L.; Labi-S.A.
关键词：	Speed-limit-effectiveness; Traffic-safety.;Indiana-; Compliance-; Economic-impacts; Motor-vehicle-accidents; Accident-severity; Fatalities-; Injuries-; Mobility-; Law-enforcement.
摘要：	The influence of speed limits on roadway safety is an extremely important social issue and is subject to an extensive debate in the State of Indiana and nationwide. With roughly 900 fatalities and sixty thousand injuries annually in Indiana, traffic accidents place an incredible social and economic burden on the state. Still, speed limits posted on highways and other roads are routinely exceeded as individual drivers try to balance safety and mobility (speed) as well as risks of penalties from enforcement efforts. This research explores the relationship between speed limits and roadway safety. Specifically, the research focuses on the influence of the posted speed limit on the causation of accidents (the likelihood that unsafe speed would be listed as the primary cause of the accident), the severity of accidents, and speed-limit compliance with an emphasis on speed-limit changes from 65 mph to 70 mph on rural interstates and from 55 mph to 60 mph on select non-freeway multilane rural highways. Data were considered on individual accidents from the Indiana Electronic Vehicle Crash Record System in 2004 and 2006. Data from 2005 were excluded because Indiana raised some interstate and non-interstate speeds in July 1, 2005--thus making 2005 a transition year as drivers adjusted to new speed limits.
报告类型：	科技报告