A trailer is basically a promotional commercial, originally intended for a potential feature film which will be shown in a cinema sometime in the near future. The trailer uses pictures or other forms of media to tell a story and then entertain the viewer so that they will go to the cinema to see the movie. It’s a finished product of great technical and creative effort.
There was a time when a trailer was a very large item, and was almost always being transported in a pick up truck. This type of trailer had a bed much larger than its body, and was outfitted with a ramp to raise it into the back of the pick up truck. The film was placed inside this trailer before going on to the actual movie set. Once there, the trailer was often left standing in the traffic until needed again. This type of trailer has been used extensively for years, although the ramp and the bed are no longer used.
Another type of trailer is the travel trailer. Travel trailers are most commonly used to provide people and trailers to trailer parks when traveling on vacations, often with their own vehicles. Travel trailers are most often towable. These types of trailers are often made of wood and not of steel, so as to prevent them from being damaged by harsh weather.
The third type of trailer is the utility trailer. These are most commonly seen on jobsites. A utility trailer can be used to haul heavy equipment, or other things that need to be moved on a regular basis to and from job sites. Just like a travel trailer, many people rent these types of trailers on a monthly basis, and usually return them when the time is up.
The fourth type of trailer is the house trailer. This is the most popular trailer type, and is the most commonly found trailer in the United States. A house trailer can be pulled behind a vehicle, or it can be pulled behind a truck. This type of trailer is most commonly towable, but not towable in all circumstances.
The fifth, and most uncommon type of trailer, is the multi-trailer unit. These are most commonly seen on roadways in outlying areas in more rural areas, or in major urban areas. When not towing, multi-trailer units are normally attached to a truck, or an automobile. The multi-trailer unit is not officially part of any one vehicle, rather they are usually split between two or more vehicles. These types of trailers usually have a freezer area, and can be hooked up to feed multiple sections of food. A towing vehicle will need to hook up the trailer to its hitch, and remove the food section when not in use.