Car carrier trucks are most often used to transport vehicles from the manufacturer to the dealership, although sometimes they are used by car owners who are relocating and choose to ship their cars instead of driving. They also are known as car haulers or auto transport trailers. Available in open or enclosed versions, most have built in ramps and power hydraulics to assist in the loading and unloading process. Unlike tow vehicles, there are no winches for loading: cars are expected to drive onto the carrier under their own power. Car carrier trucks typically hold between five and nine cars, depending on the size of the car and the trailer model. U.S. law limits the weight capacity to 80,000 lbs. Most commercial car carrier trucks attach to the tractor using a fifth wheel coupling. If you are looking for car carrier trucks for sale, head to Construction Equipment Guide’s website. There you’ll find carriers from numerous manufacturers, including Peterbilt, Sterling, Freightliner and Western Star.