A vehicle simulation system equipped to display information on the rear side of a driver (rider). The simulation system includes a dummy bicycle operated by the rider, a monitor on the front side for displaying a scene based on the operations of the dummy bicycle, and a lamp unit connected to the dummy bicycle and provided on the rear side relative to the seated position of the rider. The lamp unit has a red lamp, a yellow lamp and a green lamp, and is controlledly turned ON under the action of a main control unit. An input device is provided on a steering handle of the dummy bicycle. The input device has a switch for red, a switch for yellow, and a switch for green. The rider checks behind, and operates the input device according to the ON/OFF conditions of the lamp unit.