Bed for vehicle

The present invention relates to a bed for a vehicle, comprising two longitudinal supports (11) each composed of at least two parts that can be assembled in a fixed manner with one another, a plurality of transverse bars (12, 12') joined to said longitudinal supports (11), said longitudinal supports having at each end a connecting element making it possible to connect the bed (10) to the vehicle. This bed is characterized in that at least said transverse bars (12, 12') are adjustable in length, making it possible to define a spacing between the two longitudinal supports (11) according to the shape of the vehicle.