1. Life cycle sustainability assessment of a light rail transit system: Integration of environmental, economic, and social impacts.
- Author
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Gulcimen, Sedat, Aydogan, Emel K., and Uzal, Nigmet
- Subjects
LOCAL & light railroads ,STREET railroads ,SOCIAL impact ,URBAN transportation ,SYSTEM integration ,ECONOMIC indicators - Abstract
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 KEY POINTS: Life Cycle Sustainability Assessment (LCSA) implementation, the environmental, economic and social performance of a light rail system were assessed with a holistic approach.The majority of emissions with 50% contribution originate from the operation and maintenance phases of the light rail system.For the light rail system, energy costs are the main contributor (92%), which should be reduced to lower the overall life cycle cost.Social performance of a light rail system has the lowest score on consumers among the all stakeholders. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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