AN ENERGY AND ENVIRONMENTAL ASSESSMENT OF ROAD TRANSPORT FUELS

This paper assesses the conventional and alternative fuels for road tr ansport from the energy and environmental viewpoints. Energy security, the potential supplies of petroleum and feedstocks for alternative fu els, and existing alternative fuel programmes are discussed. A review of the formation of the main vehicular pollutants is given and compari sons of the emissions from road vehicles using conventional and altern ative fuels are made. Comparisons are also made among six transport fu el options by considering several factors that influence choice, and a possible long-term development in road transport energy consumption b y fuel type is presented.