Choosing and operating a heavy vehicle

Heavy motor vehicle categorisation of defects is a guide for roadside inspections to help ensure the detection of faults and the consequences applied are consistent.

Information on reducing rollover risk and improving your vehicle’s stability, including using our static roll threshold (SRT) calculator.

This section summarises the basic requirements and provides advice on the application of retro-reflective material.

This section outlines current issues, including safety alerts, which are beyond routine maintenance requirements. All those with an interest in the safe operation of heavy vehicles need to be aware of these issues.

Use this calculator to calculate the axle weights of your vehicle under various loading conditions.