Travel trailers in US are classified as RV (Recreational Vehicles) along with pop-up trailers, fifth wheel trailers, truck campers and motor homes. Pop-ups are usually less than 18 feet long and have simple features and can be towed by small cars. Example is the Play Pac which can be hauled by a small car. Mid range trailers are 18 to 25 feet long weighing about 5000 pounds or more and can be towed by pick up trucks. Larger travel trailers range from 25 to 40 feet, come loaded with amenities and are towed with highway tractor or large trucks or SUV’s.