Abstract
This study identified control inputs of riders which operated a two-wheeled vehicle, and cleared influence on outputs. We analyzed frequency characteristic to find out control inputs of riders in lemniscate course. As a result, We clarified that the steer torque of the Z-axis and the seat torque of the X-axis have influenced to yaw velocity as the control inputs. In addition, the steer torque of the X-axis has influenced to lateral acceleration.