The transition toward sustainable urban transportation has gained importance in recent decades. However, urban transportation has not been addressed for all dimensions of sustainability. This study presents a life cycle sustainability assessment of a light rail transit system in Kayseri, Turkey, by integrating environmental, economic, and social aspects. The sustainability performance of the light rail transit system is evaluated using a cradle-to-grave approach to assess three aspects of sustainability. For the environmental evaluation, a life cycle assessment was applied using SimaPro 8.4.1 PhD version based on ISO 14040 and 14044. The method, which includes nine environmental impact categories, was employed to assess the environmental performance of the light rail transit system with a functional unit of 1 passenger-km. For the economic assessment, life cycle costing was utilized with the functional unit of USD for 1 passenger-km. A social life cycle assessment was applied to assess the social performance of the light rail transit system based on guidelines published by the United Nations Environment Programme in collaboration with the Society of Environmental Toxicology and Chemistry. For the determination of social impacts, 11 subcategories and 18 social indicators were selected. The results showed that the global warming potential and abiotic depletion potential of the light rail system per passenger-km were 2.4E − 02 kg CO₂ eq. and 2.7E − 01 MJ, respectively, with a service life of 50 years. The total life cycle cost of the light rail system was calculated as 0.046 USD for 1 passenger-km. The results also revealed that the main contributor to the total life cycle cost was energy cost, with 92% (2.88E + 08 USD) of the total cost. In the social performance evaluation, it is found that the industry performs well for society, the local community, and workers but has a weaker social performance for the consumer due to a weak feedback mechanism. Integr Environ Assess Manag 2021;17:1070–1082. © 2021 SETAC

中文翻译：

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轻轨交通系统生命周期可持续性评估：综合环境、经济和社会影响

近几十年来，向可持续城市交通的转变变得越来越重要。然而，城市交通并未涉及可持续性的所有方面。本研究通过整合环境、经济和社会方面，对土耳其开塞利轻轨交通系统进行了生命周期可持续性评估。使用从摇篮到坟墓的方法来评估轻轨交通系统的可持续性绩效，以评估可持续性的三个方面。对于环境评价，使用基于 ISO 14040 和 14044 的 SimaPro 8.4.1 博士版本应用生命周期评价。该方法包括九个环境影响类别，用于评价轻轨交通系统的环境绩效，其中1 客公里的功能单位。对于经济评估，使用生命周期成本计算，功能单位为 1 乘客公里的美元。根据联合国环境规划署与环境毒理学和化学学会合作发布的指南，应用社会生命周期评估来评估轻轨交通系统的社会绩效。为了确定社会影响，选择了 11 个子类别和 18 个社会指标。结果表明，轻轨系统每客公里的全球变暖潜能值和非生物消耗潜能值分别为 2.4E − 02 kg CO 根据联合国环境规划署与环境毒理学和化学学会合作发布的指南，应用社会生命周期评估来评估轻轨交通系统的社会绩效。为了确定社会影响，选择了 11 个子类别和 18 个社会指标。结果表明，轻轨系统每客公里的全球变暖潜势和非生物耗竭潜势为 2.4E − 02 kg CO 根据联合国环境规划署与环境毒理学和化学学会合作发布的指南，应用社会生命周期评估来评估轻轨交通系统的社会绩效。为了确定社会影响，选择了 11 个子类别和 18 个社会指标。结果表明，轻轨系统每客公里的全球变暖潜能值和非生物消耗潜能值分别为 2.4E − 02 kg CO₂当量 和 2.7E − 01 MJ，分别具有 50 年的使用寿命。轻轨系统的总生命周期成本计算为 0.046 美元/1 客公里。结果还显示，总生命周期成本的主要贡献者是能源成本，占总成本的 92% (2.88E + 08 USD)。在社会绩效评估中，发现该行业对社会、当地社区和工人的表现良好，但由于反馈机制薄弱，对消费者的社会绩效较弱。Integr Environ Assess Manag 2021；17:1070–1082。© 2021 SETAC