Compliance and Enforcement

Compliance and enforcement activities are key factors in ensuring effective and safe management of heavy vehicles on the road network.

Transport inspectors are authorised by law to intercept and inspect vehicles in WA and, as per HVS 14 A-2017,can now issue roadside infringements.  

During an inspection the transport inspectors focus on checking compliance with mass and dimension limits, and ensuring that high productivity and oversize vehicles are operating in accordance with the conditions set down under Main Roads' permits, notices and heavy vehicle accreditation.   Other tasks include inspecting vehicles for roadworthiness, load security, driver and vehicle licensing conditions, and under an arrangement with the Department of Mines, Industry Regulation and Safety, ensuring compliance for the movement of dangerous goods.  Our Transport inspectors also perform the important role of educating and working with the transport industry and other agencies and stakeholders to improve compliance standards.

For an overview of what happens during a heavy vehicle inspections, please view our "What can I expect during a heavy vehicle inspection" brochure.  

We recently published a Heavy Vehicle Compliance Calendar,  which outlines our compliance focus for each month and aims to influence road user behaviour and to remind the transport industry of their obligations and requirements prior to traveling on the WA road network.

If you would like further information or have any other Compliance related enquiries please contact us on 138 486 or email direct at

Chain of Responsibility (CoR) Prosecutions in 2017

Following requests from the Transport Industry, Heavy Vehicle Services will now make available a list of CoR prosecutions for 2017. The list will identify the court date, party convicted, offence and fine applied.

Measurement Adjustments for the Enforcement of Mass Requirements

The transport industry and other parties involved in the Chain of Responsibility are reminded to ensure vehicles are loaded to the legal mass limits, as specified in the regulations or in a mass modification (permit or notice) granted by Main Roads. Measurement Adjustments (MAs) should not be taken into account when a vehicle is being loaded, as this applies to enforcement weighs only and will be dependent on the weighing site category.

The MAs have now been republished as the 'Measurement Adjustments for the Enforcement of Mass Requirements'.  This document provides further detail in relation to the weighing site specifications.

An enforcement officer will use these specifications to determine the category of the site being used to conduct the enforcement weigh. Selected sites will also be surveyed against these specifications and a list of categorised sites will be published in the future.

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Modified: 07 Feb 2018