Abstract: A driver training apparatus for simulating skid conditions of an automobile, comprises a separate lifting frame carried by four castor wheels which is disposed under the car and is propelled by the car. Under ordinary driving conditions, the castor wheels turn to follow the movements of the car directed by the driver. Under control of an instructor, however, the frame can raise one or more of the car wheels relative to the ground, to simulate a predetermined skid condition. This can be done either by providing members carried by the frame that are vertically movable relative to the frame, or by raising and lowering the castor wheels relative to the frame.