A riding simulation device for displaying a traveling background as an image on a display so as to give a simulated experience of riding on a motorcycle based on operations by an operator comprising: a handle mechanism grasped and operated by the operator; a first operation lever provided at the handle mechanism, for causing the motorcycle to decelerate as a result of grasping by the operator; and a second operation lever provided at the handle mechanism, the second operation lever being grasped by said operator for shifting transmission of the motorcycle when transmission of the motorcycle is shifted manually, and decelerating the motorcycle when transmission of the motorcycle is shifted automatically; first and second rotating members (88, 80a) connected respectively to the first and second operation levers (32, 30) such that the rotating members (88, 80a) rotate based on operation of the first and second operation levers (32, 30); first and second stopper mechanisms (92, 84a) for limiting rotation of the first and second rotating members (88, 80a), the second stopper mechanism including first and second stopper members (164, 170); a switching mechanism for switching between the first stopper member and the second stopper member depending on whether transmission of the motorcycle is shifted automatically or manually; and a reaction force adjusting mechanism for adjusting the rate of change of a reaction force exerted in opposition to a force applied to the first operation lever with a brake operation feeling when the operator grasps the first operation lever, and adjusting the rate of change of a reaction force exerted in opposition to a force applied to the second operation lever with a brake operation feeling, in carrying out automatic shifting of transmission of the motorcycle, or with a clutch operation feeling, in carrying out normal shifting of transmission of motorcycle, according to the switching state of the switching mechanism. a handle mechanism grasped and operated by the operator; a first operation lever provided at the handle mechanism, for causing the motorcycle to decelerate as a result of grasping by the operator; and a second operation lever provided at the handle mechanism, the second operation lever being grasped by said operator for shifting transmission of the motorcycle when transmission of the motorcycle is shifted manually, and decelerating the motorcycle when transmission of the motorcycle is shifted automatically; first and second rotating members (88, 80a) connected respectively to the first and second operation levers (32, 30) such that the rotating members (88, 80a) rotate based on operation of the first and second operation levers (32, 30); first and second stopper mechanisms (92, 84a) for limiting rotation of the first and second rotating members (88, 80a), the second stopper mechanism including first and second stopper members (164, 170); a switching mechanism for switching between the first stopper member and the second stopper member depending on whether transmission of the motorcycle is shifted automatically or manually; and a reaction force adjusting mechanism for adjusting the rate of change of a reaction force exerted in opposition to a force applied to the first operation lever with a brake operation feeling when the operator grasps the first operation lever, and adjusting the rate of change of a reaction force exerted in opposition to a force applied to the second operation lever with a brake operation feeling, in carrying out automatic shifting of transmission of the motorcycle, or with a clutch operation feeling, in carrying out normal shifting of transmission of motorcycle, according to the switching state of the switching mechanism.