To provide up to date information on the performance of a wide range of urban transport policy instruments. The Knowledgebase should contribute significantly to the achievement internationally of urban transport policy objectives of reduced congestion; an enhanced environment; greater safety; better access; fairer opportunities; improved quality of life and increased sustainability.

The knowledgebase allows each policy measure to be described, with multimedia images of operation where appropriate; to be assessed against a common set of potential objectives of urban transport policy; and to be represented by case studies of good practice in their use. Where possible, an assessment will be made of the contexts in which each policy measure performs best. Links will be provided between the policy instruments so that opportunities can be identified for integrating them to achieve enhanced performance against the objectives.