A trailer is a vehicle without motive power designed for carrying property and for being drawn by a motor vehicle. The following are sub-categories within trailers:
Dry Vans: Totally enclosed trailer for dry cargo.
Reefer Vans: A refrigerated van trailer. Used for hauling any product that is temperature-sensitive, such as food, film, and medications.
Platforms: A trailer chassis consisting of a flat loading deck without permanent sides or roof.
Low Beds: A trailer designed to carry large and heavy loads where loaded height is critical. Typically see moving large construction equipment.
Dumps: Three types of dump trailers: side, bottom, and end. Used in basic industries and construction. Used for aggregates, such as stone, coal, and sand.
Tanks: A trailer with a liquid-tight vessel to carry liquid or dry bulk freight
Containers: Containers are the boxes that are used in intermodal service to haul either domestic or international goods. Due to international freight flows, there are no international 20’ or 40’ containers built in North America. The containers produced in the North American market are for domestic freight only and are produced in both dry and refrigerated configurations.
Chassis (aka: container chassis): Chassis are the means by which containerized intermodal freight is delivered from steamships and railroads to customers. A container/chassis combination is basically a two-piece dry van.
Dolly, Converter gear: An auxiliary undercarriage assembly consisting of a chassis, fifth wheel, and tow bar used in combination trailer service.