When removing the entrusted (towed) vehicle from the site, the obstacle removal vehicle generally adopts two methods: towing and supporting. Towing is to use the arm of the wrecker to lift the vehicle and drive it. Towing is often referred to as "hard towing", which is to use the obstacle removal vehicle to be towed by the trailer.

The full name of the obstacle removal vehicle is road obstacle removal vehicle, also known as trailer, road rescue vehicle and towing vehicle. It has multiple functions such as lifting, pulling, lifting and towing. The obstacle removal vehicle is mainly used for road fault vehicles, urban vehicles against rules and emergency rescue. Obstacle removal vehicles are mainly divided into: trailer connected type, trailer separated type, one trailer type, flat plate one trailer type, multi-function obstacle removal vehicle and hydraulic automatic clamping type.