OECD Guidelines towards Environmentally Sustainable Transport The Environment Ministers of OECD member countries endorsed the Guidelines for moving towards Environmentally Sustainable Transport (EST) at their meeting in May 2001. These Guidelines are based on the results and conclusions of the EST project involving many OECD and non OECD countries and provide a solution to making transport policy more sustainable and enhancing quality of life. They have been developed to enable economic development and individual welfare without causing undue health and environmental impacts and depletion of finite resources. The EST Guidelines will assist governments at