Please be advised that despite a reminder issued in May 2025 relating to Alternate Vehicle provisions in the Single Trip OSOM Vehicle Standard Operating Conditions (as per HVS Update 8-2025), Main Roads Heavy Vehicle Services (HVS) continues to observe a high level of non-compliance with the provisions. 

As such, from Monday 9 February 2026, the Alternate Vehicle provisions will be removed from the Single Trip OSOM Vehicle Standard Operating Conditions. 

From this date, operators will be required to complete the Specified Journey (Single Trip) Permit Identical Alternate Vehicle Application form, available on the OSOM Single Trip Permits page on the Main Roads website, and submit it to permit.applications@mainroads.wa.gov.au.

Operators using an alternate vehicle will need to wait for their permit to be amended prior to departing, i.e. the permit will only be valid with the correct registration numbers of the vehicles being used during the move. 

If the alternate vehicle is identical to the vehicle specified on the current permit, HVS will process the permit amendment within 4 hours, provided the alternate vehicle is already listed in RAVS / MOVES.

Applications for alternate vehicles that are not identical or not already listed in RAVS / MOVES will be treated as a standard permit amendment and relevant processing timeframes will apply. 

For further information, please contact the Heavy Vehicle Services Helpdesk on 138 486 or email hvs@mainroads.wa.gov.au .

Heavy Vehicle Services

4 February 2026

Note: This HVS Update will be published for 1 month.