A truck is a motor vehicle designed to transport cargo.
In economics, cargo or freight are goods or produce being conveyed – generally for commercial gain – by ship, boat, or aircraft, although the term is now often extended to cover all types of freight, including that carried by train, van, truck, or intermodal container.
A motor vehicle is a self-propelled road vehicle and off-road vehicle, commonly wheeled, that does not operate on rails, such as trains or trams and used for commercial purposes on the highways in the transportation of passengers, or passengers and property.
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Trucks vary greatly in size, power, and configuration; smaller varieties may be mechanically similar to some automobiles.
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Commercial trucks can be very large and powerful, and may be configured to mount specialized equipment, such as in the case of fire trucks and concrete mixers and suction excavators.
A suction excavator or vacuum excavator is a construction vehicle that removes materials from a hole on land, or removes heavy debris on land.
A concrete mixer is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete.
Modern trucks are largely powered by diesel engines, although small to medium size trucks with gasoline engines exist in the US.
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to the mechanical compression.
A petrol engine is an internal combustion engine with spark-ignition, designed to run on petrol and similar volatile fuels.
An engine or motor is a machine designed to convert one form of energy into mechanical energy.
In the European Union, vehicles with a gross combination mass of up to 3.5 t are known as light commercial vehicles, and those over as large goods vehicles.
The gross combined weight rating or gross combination weight rating, also referred to as the gross combination mass, gross train weight, or maximum authorised mass, is the maximum allowable combined mass of a road vehicle, the passengers and cargo in the tow vehicle, plus the mass of the trailer and cargo in the trailer.
A light commercial vehicle in the European Union, Australia, New Zealand is a commercial carrier vehicle with a gross vehicle weight of no more than 3.5 metric tons.