Winters Meghan, Hosford Kate, Javaheri Sana
Faculty of Health Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A1S6, Canada.
Centre for Hip Health and Mobility, 2635 Laurel Street, Vancouver, BC V5Z 1M9, Canada.
Prev Med Rep. 2019 Jul 5;15:100946. doi: 10.1016/j.pmedr.2019.100946. eCollection 2019 Sep.
Public bike share programs have been critiqued for serving those who already bicycle, or more well-off individuals who already have a multitude of transportation options. While substantial research focuses on characteristics of public bike share members, it often overlooks their intensity of use which may relate more directly to transport and health gains. In this study we link system data with member survey data to characterize "super-users" of Vancouver's public bike share system. We used system data from September 1, 2016-August 31, 2017 to calculate member-specific trip rates (trips/month). We linked system data to demographic and travel data for members who completed an online survey in 2017 (1232 members who had made 89,945 trips). We defined super-users as those who made 20 or more trips/month. We used a logistic regression to model demographic and travel characteristics associated with super-users as compared to regular users. Of the 1232 members, 204 were super-users. Super-users made 47% of the trips and had a median trip rate of 29.3 trips/month. In adjusted models, super-users were more likely to be young, male, have household incomes below $75,000, and live and work near bike share docking stations. Super-users had fewer transportation options than regular users, with lower odds of having a personal bike or car share membership. Amongst members, we found a distinct demographic profile for super-users relative to regular users, suggesting that usage is an important consideration when quantifying transport and health gains, and the resulting equity implications of public bike share programs.
公共自行车共享项目因服务于那些已经骑自行车出行的人，或者是那些已经拥有多种交通选择的富裕人群而受到批评。虽然大量研究聚焦于公共自行车共享项目成员的特征，但往往忽视了他们的使用强度，而使用强度可能与交通和健康收益更直接相关。在本研究中，我们将系统数据与成员调查数据相结合，以描述温哥华公共自行车共享系统的“超级用户”特征。我们使用了2016年9月1日至2017年8月31日的系统数据来计算特定成员的出行率（每月出行次数）。我们将系统数据与2017年完成在线调查的成员的人口统计和出行数据相链接（1232名成员，共出行89945次）。我们将超级用户定义为每月出行20次或更多次的人。我们使用逻辑回归模型来模拟与普通用户相比，超级用户的人口统计和出行特征。在这1232名成员中，有204名是超级用户。超级用户完成了47%的出行，每月出行率中位数为29.3次。在调整后的模型中，超级用户更有可能是年轻人、男性，家庭收入低于75000美元，并且居住和工作地点靠近自行车共享停靠站。超级用户比普通用户的交通选择更少，拥有个人自行车或汽车共享会员资格的几率更低。在成员中，我们发现超级用户相对于普通用户有明显不同的人口统计特征，这表明在量化交通和健康收益以及公共自行车共享项目由此产生的公平影响时，使用情况是一个重要的考虑因素。
