Site updates

17th November – November 2008 MCHW and DMRB available. IAN 115 added to the IANs Page.

13th October – IAN 116 added to the IANs Page.

2nd September – IAN 114 added to the IANs Page.

19th August – A number of IANs have been superseded on the IANs Page.

18th August – August 2008 updates to the DMRB and MCHW available.

2nd July – IAN 113 added to IANs Page.

6th June – IANs 111 and 112 added to IANs Page.

20th May – May 2008 MCHW and DMRB available.

30th Apr – IAN 110 added to IANs Page.

9th Apr – IAN 109 added to IANs Page.

7th Mar – IANs 103 and 107 added to IANs Page.

22nd Feb – Link to 'Guidance for Safer Temporary Traffic Management' added to Links Page.

14th Feb – February 2008 DMRB available in the DMRB section.

Induced Traffic Appraisal

This guidance is now available at www.webtag.org.uk

The detailed advice for analysts is provided as four TAG units:

• VDM Preliminary Assessment Procedures (TAG Unit 3.10.1) that defines criteria to enable analysts to decide whether the effects of variable demand seriously undermine the justification for their scheme;
• VDM Scope of the Model (TAG Unit 3.10.2) gives the guidance required to specify the scope of a variable demand model;
• the form of variable demand mechanisms and the circumstances when they are suitable to be used are described in VDM Key Processes (TAG Unit 3.10.3);
• VDM Convergence Realism and Sensitivity (TAG Unit 3.10.4) sets out appropriate convergence standards together with the required realism and sensitivity tests needed to provide evidence about the robustness of the model