What is it about?
Urban rail system is a critical component of a smart and sustainable city. This paper applies the triple bottom line framework to assess Hong Kong’s mass transit railway (MTR) performance. We collected data from MTR's annual reports and sustainability reports over the period 2008-2017.
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Why is it important?
Although, there is a general consensus that urban rail is more environmentally friendly than private cars and taxis and even public buses, it is not entirely clear exactly how much urban rail is greener than other transport modes. Our findings show that GHG emission from Hong Kong's urban rail was 0.055 kg CO2-eq per pkm, which was significantly lower than 0.080 kg CO2-eq per pkm from Hong Kong's public ranchised buses and 0.137 kg CO2-eq per pkm from private cars.
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This page is a summary of: Sustainability assessment of an urban rail system – the case of Hong Kong, Journal of Cleaner Production, January 2020, Elsevier,
DOI: 10.1016/j.jclepro.2020.119961.
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