This Policy Brochure focuses on transport and its effects on the environment. Its aim is to inform transport policy makers and to assist them in designing transport policies that take better account of the environmental impacts of transport. The environment is broadly defined to include effects of transport on land, air, water and resources. The research issues on environment and transport are grouped into three areas: identifying and measuring the impacts on the environment (pollution levels, noise emissions etc.), technological solutions to environmental problems from transport, and behavioural solutions to environmental problems from transport. Where relevant, solutions cover both mitigation and adaptation.