a vehicle body that has a forward and backward direction, and a width direction;

left and right driving wheels provided apart in the width direction of the vehicle body;

free wheels provided apart from the left and right driving wheels in the forward and backward direction of the vehicle body;

left and right motors connected so as to respectively transmit power to the left and right driving wheels;

left and right rotation speed sensors detecting rotation speeds of the left and right motors;

an inclination sensor detecting an inclination of the vehicle body as a pitch angle corresponding to a component in the forward and backward direction, and a roll angle corresponding to a component in the width direction;

an operation unit that comprising a joystick-type operation element; and

a control unit that controls the left and right motors according to an amount of operation on the operation element,

wherein an angular velocity related to turning of the vehicle is provided in accordance with the rotational speed difference between the left and right drive wheels, and

wherein the control unit is configured to calculate target rotation speeds of the left and right motors, based on a target vehicle speed provided by an inclination angle, wherein said inclination angle is a single parameter in consideration of the pitch angle and the roll angle detected through the inclination sensor and by an operation position of the operation element, and on a target vehicle angular velocity provided by the inclination angle, by a left and right direction component of the operation position and by the actual speed of the vehicle, and control the left and right motors such that actual rotation speeds of the left and right motors follow the respective target rotation speeds.