M1 Ourimbah Interchange Traffic Modelling

The M1 Ourimbah interchange is a busy exit point for the residential and light industrial areas east of the M1, and for the rest stop west of the motorway, now frequented in increasing numbers by heavier freight vehicles and caravans.

We provided specialist traffic analysis and transport modelling services to RMS using SIDRA and VISSIM, for the planning and strategic investigation phase of proposed improvements to Ourimbah Interchange M1 Pacific Motorway.

This study evaluated the traffic performance of the existing intersections and network, and forecast the traffic performance of various road improvements identified by RMS. We worked collaboratively with RMS for design refinement to improve safety and deal with congestion at the Ourimbah Interchange of the M1.

Client: Roads and Maritime Services