Main Roads Heavy Vehicle Services (HVS) has recently updated the Special Purpose Vehicle Standard Operating Conditions.

The changes are as follows:

1. Removal of the general 25 km/h maximum speed and centre movement requirement when crossing bridges.
2. Addition of parking requirements.
3. Increase to the maximum length from 25 m to 26 m for the night curfew within the Metropolitan Area.
4. Alignment of curfew concessions for Fremantle Port Precinct, Henderson Industrial Estate and Burrup & Gap Ridge Precinct with Class 1 OSOM conditions.
5. Alignment of approved roads for 3 and 4 in convoy with Class 1 OSOM conditions.
6. Removal of alternative vehicle provisions to align with Class 1 OSOM conditions.

The updated Operating Conditions are now available on the Special Purpose Vehicle (SPV) 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

26 March 2026

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