Mobility is an important quality of life element, with automobile ownership regularly playing an essential role in the mobility of lower-income populations. While carsharing has gained significant momentum in the past decade as an alternative to private vehicle ownership, less is known about the role of carsharing as a mobility mode for lower-income households. To address this gap, this paper examines the impact of carsharing on the mobility of lower-income populations. This study analyzes data from the 2012 California Household Travel Survey by employing a Structural Equation Modeling (SEM), which controls for residential self-selection, car-ownership and carsharing endogeneity issues, and simultaneity bias. Model results indicate that while carsharing membership enhances mobility for both lower- and higher-income households, it has a more substantial effect on mobility among lower-income families, primarily when it is coupled with public transportation services. The findings of this study underscore the importance of the coordination between carsharing operators and public transportation agencies for enhancing the mobility of lower-income populations.

出行是生活质量的重要组成部分，拥有汽车经常在低收入人群的出行中发挥重要作用。尽管在过去十年中，汽车共享已成为替代私家车拥有量的重要动力，但人们对汽车共享作为低收入家庭的出行方式所起的作用知之甚少。为了解决这一差距，本文研究了汽车共享对低收入人群流动性的影响。本研究通过使用结构方程模型（SEM）分析了2012年加利福尼亚家庭旅行调查的数据，该结构方程可控制住宅的自我选择，汽车拥有权和汽车共享的内生性问题以及同时性偏见。模型结果表明，虽然共享汽车的会员资格可以提高低收入家庭和高收入家庭的流动性，它对低收入家庭之间的流动性产生了更大的影响，主要是因为它与公共交通服务相结合。这项研究的结果强调了拼车经营者和公共交通机构之间进行协调对于增强低收入人群的流动性的重要性。