Westfield Inaloo Stage 1 Redevelopment: Modelling Peer Review

We were commissioned by the WA Department of Transport (DoT) to review modelling work done to support a Westfield shopping centre expansion in the Perth suburb of Innaloo. Our review examined the transport planning assumptions and Aimsun modelling done by Aurecon as part of the nearby Karrinyup Mixed-Use Development. The focus of our review was on the models and supporting documents that accompanied the development application. We also commented on the traffic generation rates and broader transport planning methodology the modellers had adopted to derive their future traffic figures. We found several minor and medium severity issues with the model that the modeller could address. For example, we questioned the relevancy of Saturday surveys (used as the basis for all traffic generation estimates for the future expansion) done during a school holiday period that would likely lead to a significant under-representation of existing traffic.

Client: Department of Transport, Western Australia