A tractor unit is a powerful vehicle designed to pull trailers or other heavy loads. It typically consists of a cab for the driver and a chassis that connects to the trailer. These units are commonly used in the transportation industry to move goods over long distances. Tractor units are often part of a larger system known as a truck and trailer combination. The tractor unit provides the necessary power and control, while the trailer carries the cargo. This setup is essential for logistics and supply chain operations, ensuring efficient delivery of products across various regions.