Last edited 27 Nov 2020

Transport assessment for building developments

The National Planning Policy Framework (NPPF) suggests that a transport assessment is: 'A comprehensive and systematic process that sets out transport issues relating to a proposed development. It identifies what measures will be required to improve accessibility and safety for all modes of travel, particularly for alternatives to the car such as walking, cycling and public transport and what measures will need to be taken to deal with the anticipated transport impacts of the development.'

A transport statement is: 'A simplified version of a transport assessment where it is agreed the transport issues arising out of development proposals are limited and a full transport assessment is not required.'

A transport assessment typically includes an assessment of accessibility, existing highway conditions, and existing and proposed traffic associated with the development site. Software such as ARCADY and PICADY is often used to assess the traffic impact at junctions.

NB The London Plan, published by the Mayor of London in March 2016, suggests that a transport assessment: ‘…is prepared and submitted alongside planning applications for developments likely to have significant transport implications. For major proposals, assessments should illustrate the following: accessibility to the site by all modes; the likely modal split of journeys to and from the site; and proposed measures to improve access by public transport, walking and cycling.’

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