External costs in road transport are important indicators that evaluate the impacts on bystanders brought by road transport activities. They play significant roles in assessing comprehensive value of road transport infrastructures and policies. By reviewing the advanced literature of evaluation of external costs in road transport

the evaluation methods of external congestion cost

external accident cost

air pollution cost

noise cost and global warming cost in road transport are summarized systematically. Then

the advantages

disadvantages and applicability of different evaluation methods of each external cost are analyzed in detail. At last

the emphases and difficulties of conducting evaluation of exteranl costs in road transport are discussed and some suggestions about carring out evaluation study of external costs in road transport in Chinese urban area are offered. In these suggestions

the actuality of evaluation research of external costs in road transport in China is taken into account.