Greater Wellington Regional Council (GWRC) commissioned Sinclair Knight Merz Ltd to update the Wellington Transport Strategic Model (WTSM) to a 2006 base year and to review, investigate and advise on a number of specific model aspects.

The reviews and investigations related to the base year have been undertaken, documented in a series of technical notes and the WTSM Update Specification Report. Reference should be made to the latter, to which the technical notes are appended.