TAED Phase 2 - Re-estimating agglomeration parameters

The Department for Transport (DfT or ‘the Department) is seeking to commission research that will carry out a large scale re-estimation of the agglomeration parameters and related datasets in the Transport Appraisal Guidance (TAG). This will enable DfT to update TAG accordingly, including updating the parameters, datasets as well as the methodology for appraising agglomeration impacts where applicable. The primary research objective is to: Implement the recommendations the TAED scoping study by carrying out a large scale re-estimation of the agglomeration parameters and accompanying datasets. The research also has the following secondary objectives: Provide advice on the required revisions to the methodology for appraising agglomeration impacts as set out in TAG units 2.1 and 2.4, and wider impacts in transport appraisal (WITA) datasets and software. Deliver a step change in the ‘out of the box’ capability and transparency provided by the new estimates and datasets. Support the Department’s strategic objectives set out in 2.3 and “excellence in delivery”. This requirement will be issued as a direct award opportunity. The justification for this is in line with regulation 32 subsection 2(a) of PCR15.