Please be advised Main Roads Heavy Vehicle Services (HVS) has introduced the 53.5 metre Bindoon Hill Special Assistance Permit, as part of the ongoing support the State is providing to industry to help keep WA moving amid fuel security challenges.

This temporary three-month Special Assistance Permit provides for eligible 53.5 metre Triple Road Trains, up to AMMS level 3 mass limits, to operate on Great Northern Highway between Wubin and Muchea.

Eligibility Requirements

A transport operator may apply for a permit, subject to all vehicles meeting the safety requirements listed below and nominated drivers holding a good driving record with a minimum of three years’ experience operating 53.5 metre road trains.

• The prime mover(s) must be fitted with an engine that meets the emission standards specified in the Vehicle Standard (Australian Design Rule 80/03 - Emission Control for Heavy Vehicles) 2006 (equivalent to Euro 5 Standards).

• The prime mover must have a minimum 550 hp engine power.

• The prime mover(s) must be fitted with an Antilock Braking System (ABS) or an Electronic Braking System (EBS) and supply a CAN / TEBS brake application signal.

• The semi-trailers must be fitted with a Trailer Electronic Braking System (TEBS), with a fully functional Rollover Stability System (RSS) and a compatible CAN bus connection linking all semi-trailers.

• The prime movers must be fitted with a driver fatigue and distraction monitoring system, with appropriate governance in place to ensure events are managed effectively.

• The prime mover(s) must be installed with an in-vehicle telematics unit and Main Roads Heavy Vehicle Services (HVS) must be provided direct access to the telematics monitoring system to view speed and position records.

• The prime mover(s) must be fitted with and utilise an auxiliary braking system when descending the hill. Drivers must be familiar with the operation of the particular auxiliary braking system, with training records provided to HVS.

• At least one forward facing camera must be mounted on the prime mover and operate in accordance with the Restricted Access Vehicle Video Recording Requirements, available on the Specific Access Permits page on the Main Roads website.

In addition to the above eligibility requirements, the permit is also subject to the following access condition:

• The vehicle combination must travel in the left-hand lane at all times when ascending Bindoon Hill, unless avoiding an obstruction.

Permit Application

When applying for a permit, operators must complete and submit the 53.5 metre Bindoon Hill Special Assistance Permit Eligibility & Supporting Evidence Checklist, along with all required supporting documentation demonstrating that the vehicles meet the safety requirements and that nominated drivers qualify.

HVS will process all permit applications free of charge, with approved permits issued with a common expiry date of 31 July 2026.

The Eligibility & Supporting Evidence Checklist and permit application form are available on the Specific Access Permits of the Main Roads website.

General Reminder When Using Road Train Assembly Areas

Operators are reminded to minimise unattended parking, use designated parking bays only, and exercise caution when manoeuvring within Road Train Assembly Areas.

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

Heavy Vehicle Services

10 April 2026