Evaluation of Greenhouse Gas Emissions from Motor Vehicles in Bangkok, Thailand
Abstract
Global warming is a worldwide problem that is growing in importance. Reducing greenhouse gas emissions, the main cause of global warming has been a priority of policies in almost all countries, including Thailand. Motor vehicles have been the most important source of greenhouse gas emissions. Therefore, this study aimed to estimate the greenhouse gas emissions emitted from motor vehicles in Bangkok by using an International Vehicle Emission (IVE) model. The emission rates of greenhouse gases calculated from measurements by the Automotive Emission Laboratory of Thailand were input into the model as the base emission rates. The results found that greenhouse gas emissions from motor vehicles were 11,715.47 GgCO2eq. Taxis had the highest greenhouse gas emissions, followed by passenger cars, pickups, motorcycles, trucks, buses, vans, and public motorcycles, accounting for 28.50%, 25.94%, 20.47%, 8.90%, 7.56%, 6.28%, 2.16%, and 0.19%, respectively. The results by considering scenarios designed for reducing greenhouse gas emissions including using low-emission vehicle technology for new vehicles, reducing the use of personal motor vehicles, switching to public transport, and eliminating vehicles older than 15 years, the implementation of a single mitigation measure may not be able to reduce overall greenhouse gas emissions from motor vehicles. However, using an integrated approach that combines all mitigation measures could reduce greenhouse gas emissions by 23.68%.
Keywords : Greenhouse gas ; vehicle ; Bangkok ; emission factor ; International Vehicle Emission model
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