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Site updates

1st February – IAN 162/12 added to IANs Page.

19th December – IAN 150/11 added to IANs Page.

13th December – Road Restraints Risk Assessment Process (RRRAP) tool updated to version 1.3a.

12th December – IAN 157/11 added to IANs Page.

7th December – IAN 152/11 added to IANs Page.

30th November – November 2011 DMRB available.

24th October – IAN 151/11 added to IANs Page.

17th October – IAN 153/11 added to IANs Page.

28th July – IAN 149/11 added to IANs Page.

Air Quality

Revised Guidance for Air Quality Assessments DMRB 11.3.1

The latest (Opens new window) DMRB Air Quality Spreadsheet (2.2MB Zip File) Version 1.03c (July 2007) containing carbon emission rates based on new webTAG guidance is available to download as a zip file here.

This guidance will be used for air quality assessments of road schemes, multi-modal studies and by local authorities carrying out their second phase review and assessments. Queries relating to this guidance should be addressed to the Project Sponsor for highway schemes or to Defra's helpdesk (lasupport@aeat.co.uk) for local authority review and assessment.

If you would like to be notified of any future changes to the spreadsheet, please send your name, organisation and email address to dmrbaqusers@highways.gsi.gov.uk

Quick Links

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Further Technical Documents

All the material previously located in the ‘Quick Links’ area of this page can now be found in the new ‘Further Further Technical Information’ section.

Quick Links

Find out how to make sure you're seeing the latest version of the site

Further Technical Documents

All the material previously located in the ‘Quick Links’ area of this page can now be found in the new ‘Further Further Technical Information’ section.