ABSTRACT
Worldwide, the transport sector consumes about one-fifth of primary energy (IEA, 1997) and is responsible for almost 60 per cent of oil consumption in Organisation for Economic Co-operation and Development (OECD) countries, and consumption in the developing world is increasing. After the energy sector, transport is the largest emitter of carbon dioxide. Unlike the energy sector, energy consumption and greenhouse gas emissions of the transport sector are still increasing in many industrialized countries. The problem is even more severe in developing countries, where enormous growth is required to catch up with the industrialized world.
