Tractor trucks, also known as semi-trucks or prime movers, are categorized into several load capacity levels based on their gross combination weight rating (GCWR) and intended applications. The common classifications include:
Light-Duty Tractor Trucks (GCWR: under 16 tons) – Typically used for short-distance transport, urban logistics, and light cargo loads.
Medium-Duty Tractor Trucks (GCWR: 16–40 tons) – Suitable for regional transportation, construction material hauling, and moderate freight loads.
Heavy-Duty Tractor Trucks (GCWR: 40–100 tons) – Commonly used for long-haul freight, container transport, and industrial logistics.
Extra-Heavy-Duty Tractor Trucks (GCWR: 100+ tons) – Designed for oversize and overweight loads, such as heavy machinery, wind turbine components, and large construction equipment.
In specialized applications, super-heavy-duty tractor trucks can handle extreme loads exceeding 500 tons, often used in mining, oil and gas industries, and special engineering projects.
