抄録
This paper reviews major environmental problems caused by transport systems and proposes the measures to be taken towards more environmentally harmonized transport systems. Among various modes of transport, motor vehicles are most widespread, hence often causes considerable impacts on the environment. In addition to unsolved, traditional "pollution" problems, global environmental issues such as the climate change issue by CO_2 attract increasing attention. In order to comprehend environmental impacts of transport systems, Life-Cycle Assessment (LCA) is useful. Discussion towards "sustainable transport systems" which covers not only an environmental aspect but also economic, social and institutional aspects should be activated, reflecting long term perspective of rapidly changing our society.
