印第安纳州限速对道路安全的影响
Influence of Speed Limit on Roadway Safety in Indiana
摘要：
限速对道路安全的影响是一个极其重要的社会问题，在印第安纳州和全国范围内都有广泛的辩论。印第安纳州每年约有800-900人死亡，数千人受伤，交通事故给该州带来了令人难以置信的社会和经济负担。尽管如此，高速公路和其他道路上的限速仍然经常被超过，因为个别司机试图平衡安全和机动性（速度）。这项研究探讨了速度限制和道路安全之间的关系。即，研究的重点是张贴的速度限制的影响，事故的原因和严重程度。研究中使用了印第安纳州电子车辆碰撞记录系统中的单个事故数据，并估计了所有道路等级上不同类型事故的因果关系和严重程度的适当统计模型。建模的结果表明，速度限制并没有统计上显着的不利影响，不安全的速度相关的事故原因在所有道路上，但一般会增加事故的严重性，对大多数道路以外的高速公路（高速公路上的事故严重性不受速度限制）。我们的研究结果也许可以帮助印第安纳州交通部确定该州的最佳限速政策，从而节省生命和旅行时间。
英文摘要：
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 around 800-900 fatalities and thousands of 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). This research explores the relationship between speed limits and roadway safety. Namely, the research focuses on the influence of the posted speed limit on the causation and severity of accidents. Data on individual accidents from the Indiana Electronic Vehicle Crash Record System is used in the research, and appropriate statistical models are estimated for causation and severity of different types of accidents on all road classes. The results of the modeling show that speed limits do not have a statistically significant adverse effect on unsafe-speed-related causation of accidents on all roads, but generally increase the severity of accidents on the majority of roads other than highways (the accident severity on highways is unaffected by speed limits). Our findings can perhaps save both lives and travel time by helping the Indiana Department of Transportation determine optimal speed limit policies in the state.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
