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The Professional Truck Driver Institute (PTDI) is a non-profit organization that provides certification of training courses for drivers of commercial motor vehicles.It was formed in 1986 during the standardization of commercial driver's licensing by the Federal Motor Carrier Safety Administration in the United States. [1]
An articulated hauler, articulated dump truck (ADT), or sometimes a dump hauler, is a very large heavy-duty type of dump truck used to transport loads over rough terrain, and occasionally on public roads. The vehicle usually has all-wheel drive and consists of two basic units: the front section, generally called the tractor, and the rear ...
A standard dump truck is a truck chassis with a dump body mounted to the frame. The bed is raised by a vertical hydraulic ram mounted under the front of the body (known as a front post hoist configuration), or a horizontal hydraulic ram and lever arrangement between the frame rails (known as an underbody hoist configuration), and the back of ...
It is the largest articulated haul truck offered by Caterpillar; larger trucks use a rigid frame system. The ejector uses a 4-cylinder hydraulic ram and blade to dump the material out, a similar system to Cat's wheel tractor-scrapers. The 740 Ejector is sold as separate model from the usual 740.
In the UK, tractor unit and trailer combinations are referred to as articulated lorries, or "artics". [1]A semi-trailer truck, also known as a semitruck, [1] (or semi, [2] eighteen-wheeler, [3] big rig, [4] tractor-trailer [5] or, by synecdoche, a semitrailer) [6] [a] is the combination of a tractor unit and one or more semi-trailers to carry freight.
A CDL training truck on the range. Commercial driver's license training (or CDL training) is a specialized instructional program or course designed to prepare a student to obtain a commercial driver's license (CDL), which is required for a career as a truck driver in the United States. During training, students are taught the necessary ...
The WABCO 3200 was a rare example of a tri-axle haul truck configuration A medium sized haul truck, the 214-short-ton (194 t; 191-long-ton) Caterpillar 789 [1]. Most haul trucks have a two-axle design, but two well-known models from the 1970s, the 350T Terex Titan and 235T WABCO 3200/B, had three axles.
The M520 "Truck, Cargo, 8-ton, 4x4", nicknamed Goer, truck series was formerly the US Army’s standard heavy tactical truck before its replacement by the Oshkosh HEMTT. As trucks go, the Caterpillar -made Goer stands out due to being articulated , much wider than other trucks, and lacking suspension on the wheels.