The combination of electric vehicle (EV) and carsharing is expected to provide social and environmental benefits, like encouraging sustainable travel behaviors (reducing car ownership and vehicle kilometres of travel) and improving the accessibility and flexibility of urban transport. Thus, electric carsharing is encouraged to be adopted for daily trips, and the operators propose the friend-invitation promotion scheme for the membership expansion. This study explores the effectiveness of this scheme and the characteristics of the scheme participants and their invited friends (e.g., age, friend-invitation pattern, and EV rental pattern). The analysis found that 28.4% of these invited friends would make at least one EV rental after registration, whereas 30.4% of the other members who registered in the same period would do so, indicating that these invited friends were less active. Therefore, suggestions are given based on the EV rental pattern of these invited friends (preferring a longer journey using a smaller but cheaper EV) to enhance the effectiveness of the friend-invitation promotion scheme.

中文翻译：

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电动汽车共享邀请好友推广方案：实证分析及政策启示

电动汽车 (EV) 和汽车共享的结合有望带来社会和环境效益，例如鼓励可持续的出行行为（减少汽车拥有量和行驶里程）以及提高城市交通的可达性和灵活性。因此，鼓励在日常出行中采用电动汽车共享，并且运营商提出了会员扩展的邀请好友促销方案。本研究探讨了该计划的有效性以及计划参与者及其受邀朋友的特征（例如，年龄、朋友邀请模式和电动汽车租赁模式）。分析发现，这些受邀朋友中有28.4%会在注册后至少租一辆电动汽车，而同期注册的其他会员中有30.4%会这样做，表明这些被邀请的朋友不太活跃。因此，根据这些受邀朋友的电动汽车租赁模式（更喜欢使用较小但更便宜的电动汽车进行更长的旅程）给出建议，以提高朋友邀请促销计划的有效性。