Accelerating investment in public transport is the backbone of all urban green growth strategies. However, given the demand for travel and the increasing dependency on automobiles, a multidimensional approach and policy alignment across governments are crucial. A number of specific RE technologies show particular potential for development. Meanwhile, the Thai government should continue to roll back fossil fuel subsidies and gradually increase the carbon tax on transport fuels and electricity, in proportion to their relative carbon intensity, to reflect their real cost to society.