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The combination of a semi-trailer and a tractor truck is called a semi-trailer truck (also known simply as a "semi-trailer", "tractor trailer", or "semi" in the United States). [1] A large proportion of a semi-trailer's weight is supported by a tractor unit, or a detachable front-axle assembly known as a dolly, or the tail of another trailer ...
A "Victory Oil" semi-trailer truck from 1943. The trucking industry in the United States has affected the political and economic history of the United States in the 20th century. Before the invention of automobiles, most freight was moved by train or horse-drawn vehicle.
Conventional style cab tractor A cab over semi-tractor Tractor with an end-dump trailer A FAW semi-trailer truck in China A semi-trailer truck (also known by a wide variety of other terms - see below) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth wheel. Other terms There are a wide ...
A common property-carrying commercial vehicle in the United States is the tractor-trailer, also known as an "18-wheeler" or "semi".. The trucking industry serves the American economy by transporting large quantities of raw materials, works in process, and finished goods over land—typically from manufacturing plants to retail distribution centers.
Fruehauf Trailer Corporation, previously Fruehauf Trailer Company (1918–1963) and Fruehauf Corporation (1963–1989), [1] was an American company engaged in the manufacture and sale of truck trailers, and other machinery and equipment, with headquarters located in Detroit, Michigan.
The D Series was a range of light, medium, and heavy-duty trucks introduced in 1937. They had rounded styling and a new cab with a two-piece V-shaped windshield. Cab-over-engine models were also available. All types of bodies including semi-tractors were available. The D Series was replaced by the K Series in 1940. [12] [13]
RoadRailers were a trailer or semi-trailer that could be hauled on roads by a tractor unit and then by way of a fifth wheel coupling, operate in a unit train on railway lines. The RoadRailer system allowed trailers to be pulled by locomotives without the use of flatcars, instead attaching trailers directly to bogies.
American LaFrance ladder truck of Gainesville FD. AEERSA (ambulances, rescue vehicles, fire trucks, 2000–present) Ace (1918–1927; also Busses); Alden Sampson; Alexis Fire Equipment Company (fire trucks, 1947–present)