require a 'Class R' licence. LR Light Rigid: 'Class LR' covers a rigid vehicle with a GVM of more than but not more than . Any towed trailer must not weigh more than GVM. This class also includes vehicles with a GVM up to which carry more than 12 adults including the driver and vehicles in class 'C'. MR Medium Rigid: 'Class MR' covers a rigid vehicle with 2 axles and a GVM of more than . Any towed trailer must not weigh more than GVM. This class also includes vehicles in class 'LR'. HR Heavy Rigid: 'Class HR' covers a rigid vehicle with 3 or more axles and a GVM of more than . Any towed trailer must not weigh more than GVM. This class also includes articulated buses and vehicles in class 'MR'. HC Heavy Combination: This licence covers heavy combination vehicles like a prime mover towing a semi-trailer, or rigid vehicles towing a trailer with a GVM of more than . This class also includes vehicles in class 'HR'. MC Multi-Combination: This licence covers multi-combination vehicles like Road Trains and B-Double Vehicles. It also includes vehicles in class 'HC'. Medical standards The medical standards for drivers of commercial vehicles are set by the National Transport Commission and Austroads, and are set out in 'Assessing Fitness to Drive' (available from the Austroads website). For those applying for heavy vehicle licence classes MR (Medium Rigid), HR (Heavy Rigid), HC (Heavy Combination) or MC (Multi Combination), it is strongly recommended that the applicant ensures they meet the medical requirements before commencing any training or tests for a heavy vehicle licence. Paying passengers The driver of a vehicle carrying paying passengers (such as a school bus or tourist coach) requires an appropriate driver licence and a 'Public Passenger Vehicle Driver Authority' which is issued by the Ministry of Transport. New Zealand In New Zealand, driver licensing is controlled by the NZ Transport Agency. There are six classes of motor-vehicle licence and nine licence endorsements. Class 1 governs vehicles with a GLW (gross laden weight) or GCW (gross combined weight) of less than 6,000 kg, and Class 6 governs motorcycles. Classes 2–5 govern heavy vehicles. A Class 2 licence allows the holder to drive: any rigid vehicle (including any tractor) with a GLW of more than but less than any combination vehicle with a GCW of or less any combination vehicle consisting