Prime movers
The tractor unit of a semi-trailer combination. A prime mover connects to trailers through a fifth wheel and is used for general freight, tankers, car carriers, livestock and much more. Things to consider include engine and transmission, axle configuration, cab size and the type of trailer you plan to pull.
Rigid trucks
A rigid has the chassis and body on a single vehicle, with no articulation. Sizes range from light rigids through to heavy multi-axle trucks. They suit local delivery, construction and many specialist jobs. Consider licence class, body type and payload when comparing.
Tippers
Tipper trucks carry bulk material such as soil, gravel and demolition waste, and unload by raising the body. Check the hoist, body condition, tailgate, tarp system and how hard the truck has worked. Wear in the body and chassis can be significant on earthmoving duties.
Tray, service and crane trucks
Tray trucks carry general goods and equipment, service trucks carry tools and parts for field maintenance, and crane trucks add lifting. For anything with a crane, ask about inspection, certification and maintenance records, and read Safe Work Australia guidance on lifting equipment.
B-doubles and road trains
Multi-trailer combinations move large freight volumes over long distances. Access rules and permitted routes depend on the combination and location, so check with NHVR and local road managers. Owning one often means higher running and compliance responsibilities.
Low loaders
Low loaders carry machinery and oversize or heavy loads on a trailer with a low deck. Consider the deck configuration, ramps, axle arrangement and whether your loads need permits. Check the trailer as carefully as the prime mover.
Choosing a type
Start with the work you actually do: the loads, distances, access and the licence you hold. A truck that is too big costs more to run, and one that is too small can limit the jobs you take. Descriptions here are general; check licence and compliance requirements for your situation with the relevant authority.
