Planning Policy Guidance 13 'Transport' (March 2001) advises that a Transport Assessment (TA) should be submitted as part of any planning application where the proposed development has significant transport implications. The coverage and detail of the TA should reflect the scale of the development and the extent of the transport implications of the proposal.
For smaller schemes the TA should simply outline the transport aspects of the application, while for major proposals, the TA should illustrate accessibility to the site by all modes of transport, and the likely modal split of journeys to and from the site. It should also give details of proposed measures to improve access by public transport, walking and cycling, to reduce the need for parking associated with the proposal, and to mitigate transport impacts.
Further guidance will be found in Guidance on Transport Assessment, published by the Department for Transport (March 2007).
