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[[File:Pictograms-nps-misc-trucks-2.svg|thumb|symbols of trucks]]

[[File:Pictograms-nps-misc-trucks-2.svg|thumb|symbols of trucks]]

A '''truck''' (or '''lorry''' in [[British English]]) is a motor [[vehicle]] used to [[transport]] [[Product (consumer goods)|goods]], [[material]]s, or troops. The word "truck" comes from the [[Greek language|Greek]] word "''trochos''", which means "wheel".  Most trucks use diesel fuel. Trucks have [[variation]]s in size, power, and configuration, with the smallest being mechanically similar to an [[automobile]]. Also, the road spreads the weight of the truck which means larger amounts can be carried than with [[train]]s (steam-powered, diesel-powered, or light rail) on [[railroad track]]s.

A '''truck''' (or '''lorry''' in [[British English]]) is a motor [[vehicle]] used to [[transport]] [[cargo]], [[Product (consumer goods)|goods]], [[material]]s, or troops. The word "truck" comes from the [[Greek language|Greek]] word "''trochos''", which means "wheel".  Most trucks use diesel fuel. Trucks have [[variation]]s in size, power, and configuration, with the smallest being mechanically similar to an [[automobile]]. Also, the road spreads the weight of the truck which means larger amounts can be carried than with [[train]]s (steam-powered, diesel-powered, electric-powered, or light rail) on [[railroad track]]s.

[[File:Freightliner_M2_106_6x4_2014_(14240376744).jpg|thumb|upright=1.35|[[Freightliner Trucks|Freightliner]] M2 dump truck.]]

[[File:Freightliner_M2_106_6x4_2014_(14240376744).jpg|thumb|upright=1.35|[[Freightliner Trucks|Freightliner]] M2 dump truck.]]

== Sizes of trucks ==

== Sizes of trucks ==

== Light trucks ==

== Light trucks ==

''Light trucks'' are trucks the size of cars. They are used by [[individual]]s and also companies. In the [[United States]], a truck is a light truck if it weighs less than 6,300 [[Kilogram|kg]] (13,000 [[Pound (mass)|lb]]). Light trucks are only a little heavier than [[van]]s, [[minivan]]s, [[SUV]]s or [[pickup truck]]s, but require a special [[driver's license]].

''Light trucks'' are trucks the size of cars. They are used by [[individual]]s and also companies. In the [[United States]], a truck is a light truck if it weighs less than 6,300 [[Kilogram|kg]] (13,000 [[Pound (mass)|lb]]). Light trucks are only a little heavier than [[van]]s, [[panel van]]s, [[panel truck|canopy expresses]], [[panel truck]]s, [[minivan]]s, [[SUV]]s or [[pickup truck]]s, but require a special [[driver's license]].

== Medium trucks ==

== Medium trucks ==

''Medium trucks'' are heavier than light trucks but lighter than heavy trucks. In the United States, a truck is a medium truck if it weighs between 6,300 kg (13,000 lb) and 15,000 kg (33,000 lb). Trucks that are used for local [[delivery]] and [[public service]] (dump trucks, [[garbage]] trucks) are normally around this size than a [[car]] or [[bus]]. Medium trucks have usually two [[axles]]: one at front and one at rear. The rear wheels may be coupled (that is: two wheels hitched together) to enable heavier load, but they may also be single, In the US, they are defined as weighing between 14001–26000 lb (6351–11793 kg). In global markets, a medium-duty truck is larger than a heavy-duty pickup truck or full-size van.

''Medium trucks'', are heavier than [[pickup truck]]s or [[van]]s, but lighter than the largest cargo trucks such as [[semi-trailer truck|semi-trailer rigs]]. refer to truck Classes 6-7, which have a gross vehicle weight rating range of 19,501- 33,000 lbs. In the US, they are defined as weighing between 13,000 and 33,000 lb (5.9 and 15.0 t). For the UK and the EU the weight is between 3.5 to 7.5 t (7,700 to 16,500 lb). Local delivery and public service ([[dump truck]]s, [[garbage truck]]s and [[fire engine|fire-fighting trucks]]) are normally around this size.

== Heavy trucks ==

== Heavy trucks ==

''Heavy trucks'' are the heaviest trucks that are allowed on the road. In the U.K. they are known as ''lorries''. Usually heavy trucks have three [[axle]]s: one at front and two at rear, and the rear axles have coupled wheels to enable heavy loads than a [[car]] or [[bus]]. Often heavy trucks pull trailers. They can be either ''full trailers'' which have both front and rear axles or boggies and their own brakes, and are connected to the towing truck with a towbar, or ''semi-trailers'', which are attached to a special kind of a truck called ''tractor unit'' with a turntable coupling ("fifth wheel"). A semi-trailer is a kind of [[Trailer (vehicle)|trailer]] which has wheels only in the back and the front rides on the back of the tractor unit. The tractor unit has an [[engine]] and the semi-trailer does not. Driving a heavy truck requires a professional [[driver's license]]. Truck drivers are called ''truckers''.

''Heavy trucks'' are the heaviest trucks that are allowed on the road. In the U.K. they are known as ''lorries''. Usually heavy trucks have three [[axle]]s: one at front and two at rear, and the rear axles have coupled wheels to enable heavy loads. Often heavy trucks pull trailers. They can be either ''full trailers'' which have both front and rear axles or boggies and their own brakes, and are connected to the towing truck with a towbar, or ''semi-trailers'', which are attached to a special kind of a truck called ''tractor unit'' with a turntable coupling ("fifth wheel"). A semi-trailer is a kind of [[Trailer (vehicle)|trailer]] which has wheels only in the back and the front rides on the back of the tractor unit. The tractor unit has an [[engine]] and the semi-trailer does not. Driving a heavy truck requires a professional [[driver's license]]. Truck drivers are called ''truckers''.

The laws of various countries say what kind of vehicle combinations are allowed. A semi-trailer can be converted into a full trailer with using a ''dolly''. A dolly is a small trailer which has only a [[bogie]] (= set of wheels), fifth wheel coupling for the semi-trailer and a towbar. Using a dolly, the semi-trailer can now be hitched to an ordinary cargo-carrying truck and does not need a tractor unit.

The laws of various countries say what kind of vehicle combinations are allowed. A semi-trailer can be converted into a full trailer with using a ''dolly''. A dolly is a small trailer which has only a [[bogie]] (= set of wheels), fifth wheel coupling for the semi-trailer and a towbar. Using a dolly, the semi-trailer can now be hitched to an ordinary cargo-carrying truck and does not need a tractor unit.

File:DMG-Lastwagen von 1896.jpg|[[Daimler Motor Lastwagen|Daimler Motor-Lastwagen]] from 1898

File:DMG-Lastwagen von 1896.jpg|[[Daimler Motor Lastwagen|Daimler Motor-Lastwagen]] from 1898

File:Foden_Diesel_Truck_(40746179963).jpg|[[Foden Trucks|Foden]] diesel truck from 1931

File:Foden_Diesel_Truck_(40746179963).jpg|[[Foden Trucks|Foden]] diesel truck from 1931

File:President Biden Ford F150 Lightning 05 20 2021.jpg|[[President Joe Biden]] test driving the Ford F-150 Lightning all-electric pick up at Ford's [[Ford River Rouge Complex|Rouge Electric Vehicle Center]]

File:President Biden Ford F150 Lightning 05 20 2021.jpg|[[President Joe Biden]] test driving the Ford F-150 Lightning all-electric pick up at Ford's [[Ford River Rouge Complex|Rouge Electric Vehicle Center]]

File:Might-E Truck.jpg|[[Might-E Truck]] from [[Canadian Electric Vehicles]]

File:Might-E Truck.jpg|[[Might-E Truck]] from [[Canadian Electric Vehicles]]

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== References ==

== References ==