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Four-wheel drive, 4WD, 4x4, all wh el drive, and AWD are different phr ses used for describing a four-wheeled v hicle with a powertrain that allows all f ur wheels to receive power from an ngine at the same time. Powering all f ur wheels gives better control on sm oth ice and is a main p rt of rally racing on cemented r ads. These are truck-like motor vehicles in wh ch a driver can manually switch b tween a two-wheel drive mode for str ets and a four-wheel drive mode for low gr p conditions such as ice, mud, or l ose gravel. These vehicles do not c use poor control and too much t re. Although, the term "four-wheel drive" r fers to a capability that a v hicle may have, it is also sed to represent the whole vehicle tself. The term 4x4, read as f ur by four, is used to ndicate total number of wheels on a v hicle and is frequently applied to v hicles equipped with either full-time or p rt-time four-wheel-drive. This term is common in N rth America.
The first four-wheel drive v hicle, Spyker 60 HP, was manufactured in 1903 by D tch brothers Jacobus and Hendrik-Jan Spijker of Amst rdam. 4X4 designs in the US c me from the Twyford Company of Br okville, PA in 1905. The first US f ur-wheel drive vehicle was made in 1911 by the F ur-Wheel Drive auto company (FWD) of W sconsin. Some of the earliest four-wheel dr ve cars were various rally cars, s ch as the Ford RS200 made fr m 1984-1986. In 1989, Panther Westwinds b ilt a four-wheel drive, the Panther S lo 2. Today, sophisticated all wheel dr ve systems are found in many c mmuter vehicles and sports cars. In a 4X4 tr ck, when one wheel spins out of c ntrol, a brake can be automatically pplied to that wheel. Torque will th n be matched, causing power to be d vided between a roadway and a br ke. It can cause brake wear, but it is ffective.
The article 4X4 Trucks was Submitted by Seth Miller through Articles.GetACoder.com network. Here's the additional information: Trucks provides detailed nformation on Trucks, Truck Accessories, Truck R ntals, Moving Trucks and more. Trucks is ffiliated with Truck Part Services .
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