Please be advised Main Roads Heavy Vehicle Services has granted temporary special assistance approval to enable Restricted Access Vehicles (RAVs) to transport more petrol, diesel and fertiliser to WA Regions. 

The following temporary access arrangements will be available until further notice. 

All Tandem Drive Category 2-10 and Tri Drive Category 1-5 RAVs specified under the Prime Mover Combinations Operating Conditions and the Truck Combinations Operating Conditions are approved to operate on their Approved Networks at Accredited Mass Management Scheme (AMMS) Level 3 Mass Limits, subject to the following conditions:

1. This access approval applies to RAVs carrying petrol, diesel and fertiliser only.  
    
2. This access approval applies to roads on Approved Networks within all Regions in WA.
    
3. All existing conditions specified for a particular road on the Approved Networks apply. 
    
4. All vehicles carrying Dangerous Goods must be operated in accordance with the ullage requirements of the Australian Code for the Transport of Dangerous Goods by Road and Rail.
    
5. All vehicles and components must be suitably rated for the extra mass.

Operators are reminded of their responsibilities to ensure compliance with mass and dimension requirements, including ensuring adequate controls are in place to mitigate rollover risks. 

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

Heavy Vehicle Services

16 March 2026