A tractor, road tractor, or road locomotive is a work vehicle that pulls things. Tractors are used for farming and construction, and to pull trailers. They usually have a seat for only the driver, and can be used to pull many different loads.
Most tractors use big wheels, but some use rubber tracks to spread their weight over a large area. This is useful for farmers in places with very soft or muddy ground where a tractor with wheels might get stuck.
