18wheelers
An 18-wheeler, also known as a semi-trailer truck or tractor-trailer, is a combination vehicle consisting of a prime mover (tractor) and one or more semi-trailers. These vehicles are essential for long-haul freight transportation in North America, moving a significant portion of the continent's goods. The "18-wheeler" designation refers to the typical number of wheels found on such a rig: two axles on the tractor, each with dual wheels, and multiple axles on the trailer, also usually with dual wheels.
The tractor unit is powered by a large diesel engine and houses the driver's cab. It is
Operating an 18-wheeler involves complex maneuvers due to their length, weight, and turning radius. Drivers must