Auditing Process


Audit Checklists






Additional Resources

Guidelines for analysing freeway sections (uploaded 13 May 2019)

This document relates to freeway and highway sections and provides guidelines on how to obtain the peak hour volumes from ROM24, the  macroscopic travel demand model. It also provides guidelines on how to adjust the projected volumes based on a comparison between modelled volumes and actual traffic counts for the same base year.


We want your feedback

We conducted a survey in July 2019 to get feedback on some of our key modelling documents.

Before we proceed with the updates, we'd like your view on the suggested changes.

You can read the comments from the 2019 survey by clicking on the following links:

If you'd like to provide further feedback, complete the February 2020 survey .



Operational Modelling and Visualisation, Network Operations Directorate omv@mainroads.wa.gov.au