识别影响碰撞率和碰撞类型的关键道路几何参数。
Identifying critical road geometry parameters affecting crash rate and crash type.
作者信息
Othman Sarbaz, Thomson Robert, Lannér Gunnar
机构信息
Department of Applied Mechanics, Chalmers University of Technology, Gothenburg, Sweden.
出版信息
Ann Adv Automot Med. 2009 Oct;53:155-65.
The objective of this traffic safety investigation was to find critical road parameters affecting crash rate (CR). The study was based on crash and road maintenance data from Western Sweden. More than 3000 crashes, reported from 2000 to 2005 on median-separated roads, were collected and combined with road geometric and surface data. The statistical analysis showed variations in CR when road elements changed confirming that road characteristics affect CR. The findings indicated that large radii right-turn curves were more dangerous than left curves, in particular, during lane changing manoeuvres. However sharper curves are more dangerous in both left and right curves. Moreover, motorway carriageways with no or limited shoulders have the highest CR when compared to other carriageway widths, while one lane carriageway sections on 2+1 roads were the safest. Road surface results showed that both wheel rut depth and road roughness have negative impacts on traffic safety.
本次交通安全调查的目的是找出影响事故率（CR）的关键道路参数。该研究基于瑞典西部的事故和道路维护数据。收集了2000年至2005年在中央分隔带道路上报告的3000多起事故，并将其与道路几何和路面数据相结合。统计分析表明，当道路要素发生变化时，事故率也会有所不同，这证实了道路特征会影响事故率。研究结果表明，大半径右转曲线比左转曲线更危险，特别是在变道操作期间。然而，无论是左曲线还是右曲线，曲率越大越危险。此外，与其他车道宽度相比，没有路肩或路肩有限的高速公路车道事故率最高，而2+1道路上的单车道路段最安全。路面结果表明，车辙深度和道路粗糙度均对交通安全有负面影响。
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