Disclosed is an automatic autonomous road vehicle, i.e. a vehicle driving without a driver, which is easy to handle for any user, including disabled persons, and is very safe both while running and while in a stopped position. Said automatic road vehicle comprises four wheels (8), a body with doors, and a device by means of which the floor of the body can be lowered to the ground in the stopped position and can be maintained at a certain distance from the ground in a moving or running position. Said device is provided with two hinge elements (3) located respectively at the front and the rear of the body at transversal axes (2) in relation to the body. Said elements (3) are provided with a wheel (8) at each end thereof, which is actuated by an electric motor, said electric motor being disposed in the hub of said wheel and turning around axes (11) that are parallel to the hinged axes of said two elements (3) in such a way that the two wheels disposed at one end raise the floor (1) when turning in one direction and lower the floor (1) when turning in the opposite direction, while the wheels disposed at the other end raise and lower the floor when turning in the opposite direction of the first wheels. Said device is designed such that said wheels move the vehicle when the floor is in a raised position.