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Influence of Lane Width on Bus Crashes
Transportation Research Record: Journal of the Transportation Research Board ( IF 1.6 ) Pub Date : 2020-10-22 , DOI: 10.1177/0361198120953794
Boya Dai 1 , Joan G. Hudson 1 , Ben Ettelman 1 , Eun Sug Park 1
Affiliation  

Motor vehicle lane width is often reduced to accommodate non-motorized transportation and increase safety for all road users—in many cases from the conventional width of 12 ft to as narrow as 9–10 ft. Although it has not been a significant issue for passenger car drivers, the narrower lanes pose concerns for bus transit operators. This study analyzed data from the Capital Metropolitan Transportation Authority, the public transit provider in the Austin, Texas, area, to evaluate the influence of narrow travel lanes on bus crashes. It included a comprehensive review of literature, interviews with cities and transit agencies, an analysis to determine the correlation between lane width and target bus crashes (sideswipe, fixed-object, and mirror-to-mirror), and an assessment of the impact of a curb or parked car immediately adjacent to the narrow outside lane on bus crashes. The literature review and interview findings support a standard lane width of 11–12 ft for bus routes. The statistical analysis suggested that more target bus crashes were associated with narrower lane widths. A curb or parked car immediately adjacent to the outside lane was problematic regardless of whether the outside lane was less than 12 ft or not. Though narrower lane width could contribute to fewer catastrophic crashes because of the slower speeds, it increases the likelihood of certain bus crashes. Cities and transit agencies should work together to determine lane width to balance the needs of all road users.



中文翻译:

车道宽度对公交车撞车的影响

通常会减小机动车道的宽度,以适应非机动车运输,并提高所有道路使用者的安全性-在许多情况下,宽度从常规的12英尺到窄至9-10英尺。尽管对于乘客而言,这并不是一个大问题对于汽车驾驶员来说,较窄的车道给公交车运营商带来了麻烦。这项研究分析了得克萨斯州奥斯汀市公共交通提供商首都大都会运输局的数据,以评估狭窄的行车道对公交车撞车的影响。它包括对文献的全面审查,对城市和公交机构的采访,分析以确定车道宽度与目标公交车碰撞(侧滑,固定物体和镜像到镜像)之间的相关性,并评估紧邻狭窄的外部车道的路边或停放的汽车对公交车碰撞的影响。文献综述和访谈发现支持公交路线的标准车道宽度为11-12英尺。统计分析表明,更多的目标公交车撞车事故与较窄的车道宽度有关。无论外部车道是否小于12英尺,紧邻外部车道的路缘石或停放的汽车都是有问题的。尽管较窄的车道宽度由于速度较慢而可以减少灾难性事故的发生,但它增加了某些公交车发生事故的可能性。城市和公交机构应共同努力,确定车道宽度,以平衡所有道路使用者的需求。文献综述和访谈发现支持公交路线的标准车道宽度为11-12英尺。统计分析表明,更多的目标公交车撞车事故与较窄的车道宽度有关。无论外部车道是否小于12英尺,紧邻外部车道的路缘石或停放的汽车都是有问题的。尽管较窄的车道宽度可能会由于速度较慢而导致较少的灾难性事故,但它增加了某些公交车发生事故的可能性。城市和公交机构应共同努力,确定车道宽度,以平衡所有道路使用者的需求。文献综述和访谈发现支持公交路线的标准车道宽度为11-12英尺。统计分析表明,更多的目标公交车撞车事故与较窄的车道宽度有关。无论外部车道是否小于12英尺,紧邻外部车道的路缘石或停放的汽车都是有问题的。尽管较窄的车道宽度由于速度较慢而可以减少灾难性事故的发生,但它增加了某些公交车发生事故的可能性。城市和公交机构应共同努力,确定车道宽度,以平衡所有道路使用者的需求。无论外部车道是否小于12英尺,紧邻外部车道的路缘石或停放的汽车都是有问题的。尽管较窄的车道宽度由于速度较慢而可以减少灾难性事故的发生,但它增加了某些公交车发生事故的可能性。城市和公交机构应共同努力,确定车道宽度,以平衡所有道路使用者的需求。无论外部车道是否小于12英尺,紧邻外部车道的路缘石或停放的汽车都是有问题的。尽管较窄的车道宽度由于速度较慢而可以减少灾难性事故的发生,但它增加了某些公交车发生事故的可能性。城市和公交机构应共同努力,确定车道宽度,以平衡所有道路使用者的需求。

更新日期:2020-10-29
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