Cabover trucks, which are also known as Cab Over Engine(COE), cab forwards or forward control trucks, are the types of heavy-duty tractors in which the cab is located above the engine and front axle. A cabover sleeper truck is a cabover tractor with a compartment where the driver can sleep, relax or watch TV. The sleeper berth is attached to the back of the cab and provides a place for the driver to rest. The cab-over body style places the cabin and the sleeper berth forward of the tractor. The front of the truck is flat-nosed, and the cabin is over the engine and the front axle. There is no hood.
Sleepers come in a range of sizes and comfort levels, anywhere from 2- to 4-foot bunk to a 12-foot apartment with every luxury. Many sleepers come with air conditioning, sound systems, microwave, table, wood grain accents and refrigerators.
Aside from being a comfortable place for over-the-road truck drivers to rest during long trips, the sleeper area of a cabover style truck helps drivers and trucking companies to conform to interstate commerce regulations.
There are strict rules governing the industry of interstate commerce, in which commercial goods are moved from one state to another. There are regulations that limit the number of consecutive hours, both daily and weekly, that a driver is allowed to spend behind the wheel. Maximum driving time and minimum rest periods are written into law. Drivers have to keep a written log of their driving and rest times, which is subject to inspection. The purpose of these regulations is to reduce accidents that happen as a result of driver fatigue, to protect the lives of truck drivers and other drivers on the roads.
Sleeper cabins allow the driver to pull over and rest, even if he or she is far away from home and not conveniently near a hotel.