Service-based alternatives to private vehicles and public transport are increasing. These innovations are hoped to boost the transition to sustainable mobility, addressing challenges such as congestion, air quality and the large share of CO₂ resulting from traffic. To achieve this transition, there is an urgent need for collaboration between private companies and public authorities, especially locally. We claim that insufficient attention is paid to the agencies of the practical actors, such as car sharing operators, which is the key to understanding what this collaboration requires. Orchestrating the collaboration successfully is also a prerequisite for the sustainability of the services. We use interview data from car sharing operators and public authorities in Finnish cities to analyze the local-level implementation of shared mobility services. Our results show how the local public authorities play a crucial role in allowing the services to flourish but also ensure the services’ environmental and social sustainability.

私家车和公共交通的基于服务的替代方案正在增加。这些创新有望促进向可持续交通的过渡，解决交通拥堵、空气质量和 CO _{2比例过高等挑战}交通造成的。为了实现这一转变，迫切需要私营公司和公共当局之间的合作，尤其是在当地。我们声称对汽车共享运营商等实际参与者的代理机构关注不足，这是理解这种合作需要什么的关键。成功协调合作也是服务可持续性的先决条件。我们使用来自芬兰城市的汽车共享运营商和公共当局的采访数据来分析共享移动服务的地方级实施情况。我们的结果显示了地方公共当局如何在使服务蓬勃发展以及确保服务的环境和社会可持续性方面发挥关键作用。