This is a semi-truck that has a sleeper birth unit attached to the cab of the unit. The driver has a access to the sleeping compartment directly from the cab of the unit. Inside the sleeper birth is a bed and living quarters for long haul drivers operating "over-the-road".
Sleeper birth trucks have a sleeper birth unit directly attached to the cab of the truck. These types of units are used to transport freight & services usually beyond 100 miles (160km) of the home terminal. For over-the-road truck drivers, these sleeper birth units are equipped with living quarters as well as a bed. Living quarters can include such things as a refrigerator, television and inverter which will give the driver access to plug in microwave ovens, computers and other electric devices.