Greenhouse gas emission analysis and measurement for urban rail transit: A review of research progress and prospects

Zhenzhou Yuan; Xiaojing Yuan; Yang Yang; Jinjie Chen; Yingjie Nie; Meng Cao; Long Chen

doi:10.48130/DTS-2023-0004

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Digital Transportation and Safety ›› 2023, Vol. 2 ›› Issue (1) : 36-51. DOI: 10.48130/DTS-2023-0004

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Greenhouse gas emission analysis and measurement for urban rail transit: A review of research progress and prospects

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Abstract

Rail transit plays a key role in mitigating transportation system carbon emissions. Accurate measurement of urban rail transit carbon emission can help quantify the contribution of urban rail transit towards urban transportation carbon emission reduction. Since the whole life cycle of urban rail transit carbon emission measurement involves a wide range of aspects, a systematic framework model is required for analysis. This research reviews the existing studies on carbon emission of urban rail transit. First, the characteristics of urban rail transit carbon emission were determined and the complexity of carbon emission measurement was analyzed. Then, the urban rail transit carbon emission measurement models were compared and analyzed in terms of the selection of research boundaries, the types of greenhouse gas (GHG) emissions calculation, and the accuracy of the measurement. Following that, an intelligent station was introduced to analyze the practical application of digital collaboration technology and energy-saving and carbon-reducing system platforms for rail transit. Finally, the urgent problems and future research directions at this stage were discussed. This research presents the necessity of establishing a dynamic carbon emission factor library and the important development trend of system integration of carbon emission measurement and digital system technology.

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Urban rail transit / Life cycle assessment (LCA) / Greenhouse gas emission / Digital collaboration technology / Carbon emission factors / Climate change / Measurement method

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Zhenzhou Yuan, Xiaojing Yuan, Yang Yang, Jinjie Chen, Yingjie Nie, Meng Cao, Long Chen. Greenhouse gas emission analysis and measurement for urban rail transit: A review of research progress and prospects. Digital Transportation and Safety, 2023, 2(1): 36‒51 https://doi.org/10.48130/DTS-2023-0004

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This work was supported by Beijing Natural Science Foundation (J210001), Natural Science Foundation of Hebei Province (E2021210142) and Tianjin Natural Science Foundation (21JCZXJC00160).