Main Roads Heavy Vehicle Services (HVS) has recently made some changes to the Class 1 RAV Oversize Period Permit Operating Conditions.

The changes are as follows:

1. The compulsory WA Heavy Vehicle Accreditation requirements have been amended to clarify the Class 1 RAV Oversize Period Permit does not apply to operators who are not currently accredited. 
    
2. Added provisions to allow the relocation of an empty oversize off-road mining trailer.
    
3. Clarified Rigid & Pig or Tag Trailer length requirements.
    
4. Added Burrup and Gap Ridge to night curfew exemptions. 
    
5. Speed restrictions have been amended to clarify all relevant speed limits applicable to the vehicle combination, which will be enforced by WA Police and HVS Transport Inspectors.
    
6. Parking requirements have been added to ensure oversize vehicles are not parking in prohibited areas and parking requirements or restrictions are adhered to when parking in approved parking areas. These provisions will be enforced by HVS Transport Inspectors. 

The updated Operating Conditions are now available on the Oversize Overmass (OSOM) page on our website.

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

Heavy Vehicle Services

8 October 2025

Please note: This HVS Update will be published for 1 month.