A crew car (also known as a relay van) is a passenger carriage specially fitted out for the use of train drivers. Interior fittings include a sleeping compartment for each crew member, a lounge area, kitchen, bathroom, and laundry. They are usually provided with an onboard generator system and air conditioning.
They are primarily used on long distance freight trains in Australia, where train crew sign on at one depot, and alternate crewing the train during the journey. The car is usually marshalled a few carriages behind the locomotives. Most crew cars have been converted from older passenger carriages, or depowered railcars.