There are many methods of towing, depending on what is being towed. There are three main types of tow trucks: flatbed, wheel-lift, and hook and chain. Flatbed tow trucks use a ramp to raise the vehicle onto the truck bed, while wheel-lift tow trucks use a metal yoke to lift the front or rear wheels of the vehicle onto the truck bed. Hook and chain tow trucks use a chain to secure the vehicle to the truck bed. All three types of tow trucks can be used to transport vehicles of all sizes, from motorcycles to semi-trucks.