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The Impact of Bikesharing Infrastructure on Crashes and Policy Implications for San Francisco

机译：共享单车基础设施对旧金山交通事故的影响和政策含义

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As a part of nationwide efforts to reduce congestion levels, vehicle-miles-traveled, andother negative aspects of the current transportation system, major cities in the United States arelooking towards bikesharing programs. However, based on the experience of Vélib in Paris andan expected increase in ridership on capacity-limited infrastructure, concerns are raised as towhether these programs compromise bicyclists’ safety. This paper investigates the need forinfrastructure changes when implementing a bikesharing program by examining two existingsystems: Capital Bikeshare of Washington, D.C. and Nice Ride of Minneapolis, Minnesota.Based on this cross-sectional analysis, policy recommendations are made for San Franciscowhich implemented its own bikesharing program, Bay Area Bike Share in late August 2013.The data examined includes bicycle counts and crash data from Minneapolis. Two crashhotspots in Minneapolis are then studied further to determine the effect of infrastructure changesthat divert bicyclists to traffic calmed routes. Through these analyses, it is shown thatbikesharing programs often increase crashes, partially as a result of additional bicycle traffic;however, infrastructure developments and strategic placement of bikeshare stations can alleviatethis issue. Poor bikeshare station placement and infrastructure changes, such as adding bike lanesto a traffic-heavy street, can contribute to an increase in crash rates.
机译：作为全国范围内减少交通拥堵程度的一部分， 当前运输系统的其他不利方面，美国的主要城市是 期待共享单车计划。但是，根据Vélib在巴黎和 容量受限的基础设施的载客量预计会增加，人们对此表示关注 这些计划是否会危害骑行者的安全。本文调查了 通过检查两个现有的实施共享单车计划时的基础设施变化 系统：华盛顿特区的Capital Bikeshare和明尼苏达州明尼阿波利斯的Nice Ride。 基于此横断面分析，为旧金山提出了政策建议 该公司于2013年8月下旬实施了自己的自行车共享计划“湾区自行车共享”。 检查的数据包括明尼阿波利斯的自行车计数和碰撞数据。两次坠毁 然后进一步研究明尼阿波利斯的热点，以确定基础设施变化的影响 使骑自行车的人转向交通畅通的路线。通过这些分析表明， 共享单车程序通常会增加撞车事故，部分原因是额外的单车通行; 但是，基础设施的发展和自行车共享站的战略布局可以缓解 这个问题。不佳的单车共享站位置和基础设施变更，例如添加单车道 到交通繁忙的街道上，可有助于提高撞车率。

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