A semi-truck is a large vehicle commonly used for transporting goods over long distances. It consists of two main parts: the tractor, which is the front section that contains the engine and driver's cab, and the trailer, which is the rear section that carries the cargo. Semi-trucks are designed to haul heavy loads and can be seen on highways and roads across the country. These vehicles are essential for the freight industry, as they help move products from manufacturers to retailers. Semi-trucks come in various sizes and configurations, allowing them to transport different types of cargo, including food, furniture, and machinery. Their ability to connect and disconnect from trailers makes them versatile for various transportation needs.