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Sustainability in road transport : an integrated life cycle analysis for estimating emissions

Rahman, Md. Habibur, Chin, Hoong Chor, & Haque, Md. Mazharul (2010) Sustainability in road transport : an integrated life cycle analysis for estimating emissions. In International Conference on Sustainable Built Environment (ICSBE) : The State of the Art, Kandy, Sri Lanka.

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      Abstract

      Despite of a significant contribution of transport sector in the global economy and society, it is one of the largest sources of global energy consumption, green house gas emissions and environmental pollutions. A complete look onto the whole life cycle environmental inventory of this sector will be helpful to generate a holistic understanding of contributory factors causing emissions. Previous studies were mainly based on segmental views which mostly compare environmental impacts of different modes of transport, but very few consider impacts other than the operational phase. Ignoring the impacts of non-operational phases, e.g., manufacture, construction, maintenance, may not accurately reflect total contributions on emissions. Moreover an integrated study for all motorized modes of road transport is also needed to achieve a holistic estimation. The objective of this study is to develop a component based life cycle inventory model which considers impacts of both operational and non-operational phases of the whole life as well as different transport modes. In particular, the whole life cycle of road transport has been segmented into vehicle, infrastructure, fuel and operational components and inventories have been conducted on each component. The inventory model has been demonstrated using the road transport of Singapore. Results show that total life cycle green house gas emissions from the road transport sector of Singapore is 7.8 million tons per year, among which operational phase and non-operational phases contribute about 55% and about 45%, respectively. Total amount of criteria air pollutants are 46, 8.5, 33.6, 13.6 and 2.6 thousand tons per year for CO, SO2, NOx, VOC and PM10, respectively. From the findings, it can be deduced that stringent government policies on emission control measures have a significant impact on reducing environmental pollutions. In combating global warming and environmental pollutions the promotion of public transport over private modes is an effective sustainable policy.

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      ID Code: 51241
      Item Type: Conference Paper
      Keywords: Life Cycle Analysis, Environmental Pollution, Green house gas emissions, Road Transport Emissions
      Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)
      Divisions: Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)
      Current > Schools > School of Civil Engineering & Built Environment
      Current > QUT Faculties and Divisions > Science & Engineering Faculty
      Copyright Owner: Copyright 2010 Please consult the authors.
      Deposited On: 29 Jun 2012 13:23
      Last Modified: 25 Mar 2013 02:03

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