The need to transition towards more sustainable futures is evident. This paper explores the role of social enterprise in urban sustainability transitions. Using the UP Bike Share (UPBS), a university-based bicycle-sharing social enterprise (in Metro Manila, Philippines) as a case study, this paper aims to bring a more explicit social entrepreneurship perspective towards sustainability transitions research as well as draw insights from social enterprise as a social innovation to challenge existing sociotechnical regimes. Existing operator models of bike-sharing systems in other countries are predominantly for-profit vendors, publicly-owned entities and non-profit organizations. Emerging from civil society, UP Bike Share, on the other hand, is a social enterprise that grew into a social movement with a well-defined advocacy, and became part of a bigger social movement of sustainability advocates. Where previous attempts to establish a bike-sharing program by the local government, international development institution and public transport agency in Metro Manila failed, the UP Bike Share represents the first bike-sharing system in the Philippines that was successfully piloted, implemented and sustained. We then expound on three mechanisms by which UP Bike Share can achieve such transformation, namely: market formation, insertion into the broader social movement, and replication of innovation in other localities, supporting wider sustainability goals. We end with agenda for future research.

向更可持续的未来过渡的需要显而易见。本文探讨了社会企业在城市可持续发展转型中的作用。本文以UP Bike Share（UPBS）（一家以大学为基础的共享自行车的社会企业（位于菲律宾马尼拉大都会））为案例研究，旨在为可持续发展转型研究带来更明确的社会企业家视角，并汲取见解从作为社会创新的社会企业到挑战现有的社会技术制度。其他国家/地区现有的自行车共享系统运营商模型主要是营利性供应商，公有实体和非营利组织。另一方面，UP Bike Share来自民间社会，是一家社会企业，已发展成为具有明确倡导的社会运动，并成为更大范围的可持续发展倡导者社会运动的一部分。如果以前地方政府，国际开发机构和公共交通部门在马尼拉大都会建立自行车共享计划的尝试失败了，那么UP Bike Share就是菲律宾第一个成功试用，实施和维持的自行车共享系统。然后，我们阐述了UP Bike Share可以实现这种转变的三种机制，即：市场形成，融入更广泛的社会运动以及在其他地区复制创新以支持更广泛的可持续发展目标。我们以未来研究的议程结尾。国际发展机构和马尼拉大都会的公共交通部门失败了，UP Bike Share代表了菲律宾第一个成功试点，实施和维持的自行车共享系统。然后，我们阐述了UP Bike Share可以实现这种转变的三种机制，即：市场形成，融入更广泛的社会运动以及在其他地区复制创新以支持更广泛的可持续发展目标。我们以未来研究的议程结尾。国际发展机构和马尼拉大都会的公共交通机构失败了，UP Bike Share代表了菲律宾第一个成功试点，实施和维持的自行车共享系统。然后，我们阐述了UP Bike Share可以实现这种转变的三种机制，即：市场形成，融入更广泛的社会运动以及在其他地区复制创新以支持更广泛的可持续发展目标。我们以未来研究的议程结尾。在其他地方推广创新，支持更广泛的可持续发展目标。我们以未来研究的议程结尾。在其他地方推广创新，支持更广泛的可持续发展目标。我们以未来研究的议程结尾。