Heavy vehicle licence classes
A car licence (class C) lets you drive vehicles up to 4.5 tonnes gross vehicle mass (GVM). To drive trucks and buses above that, you need a heavy vehicle licence. Australia uses five heavy classes, from light rigid to multi combination.
Each class builds on the one below and requires a minimum time on your current licence. The classes are similar across Australia, but training, testing and medical rules vary by state.
By the end of this topic you can
- You can name the five heavy vehicle licence classes.
- You can match common trucks and buses to the right class.
- You can work out how long you must hold a licence before upgrading.
- You can explain why medical and assessment rules vary by state.
What you need to know and understand
- GVM means gross vehicle mass: the most a vehicle can weigh when fully loaded, as set by the maker.
- LR covers rigid vehicles over 4.5 tonnes GVM up to 8 tonnes, including some minibuses.
- MR covers rigid vehicles with two axles over 8 tonnes GVM.
- HR covers rigid vehicles with three or more axles over 8 tonnes GVM, plus articulated buses.
- HC covers prime movers with a semi-trailer, and rigid vehicles towing a trailer over 9 tonnes GVM.
- MC covers B-doubles and road trains, and lets you drive any vehicle except a motorcycle.
The ladder from LR to MC
- LR (light rigid): small trucks and some minibuses over 4.5 tonnes up to 8 tonnes GVM.
- MR (medium rigid): two-axle trucks and buses over 8 tonnes GVM.
- HR (heavy rigid): three or more axles, such as larger tippers, plus articulated buses.
- HC (heavy combination): semi-trailers, and heavy rigid trucks towing a trailer over 9 tonnes GVM.
- MC (multi combination): B-doubles and road trains.
How long before you can step up
NSW and Queensland use these minimum holding times. Check the rules in other states and territories, as they can differ.
- LR or MR: class C car licence held for at least 1 year.
- HR: class C held for at least 2 years, or LR or MR held for at least 1 year.
- HC: MR or HR held for at least 1 year.
- MC: HR or HC held for at least 1 year.
Extra steps that vary by state
Every class needs a knowledge test and an eyesight test. In NSW, MC applicants also need a medical assessment, with repeat medicals as they get older. Queensland sets minimum training hours for MC: at least 16 hours for an HR holder, or 8 hours for an HC holder. In NSW, provisional P2 time on MR or HR counts, but you cannot learn or upgrade to HC until you hold an unrestricted MR or HR licence. Victoria, WA, SA, Tasmania, the ACT and the NT have their own procedures, so check your state road authority.
Common mistakes
- Driving a truck that is just over 4.5 tonnes GVM on a car licence. Check the GVM on the compliance plate.
- Confusing GVM (the rated maximum) with the vehicle's empty weight.
- Assuming a heavy rigid licence lets you tow any trailer. Trailers over 9 tonnes GVM need HC.
- Planning a career upgrade without counting the minimum holding time.
Test yourself: Heavy vehicle licence classes
Answer each question, then read the explanation. Questions come in a random order each time.
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Sources: Transport for NSW heavy vehicle licence pages: getting a heavy vehicle licence, licence classes, heavy vehicle driving test (nsw.gov.au); Queensland Government licence types, classes and upgrading pages (qld.gov.au); Transport for NSW Heavy Vehicle Driver Handbook. Independent guide, not affiliated with any licensing agency. Always check the latest official rules with your state or territory road authority.