a vehicle body frame;

a vehicle body tilt sensor which is provided at the vehicle body frame and detects a tilt angle of the vehicle body frame;

a drive unit which is coupled to the vehicle body frame and moves the vehicle body frame along a floor surface by inverted pendulum control based on the tilt angle detected by the vehicle body tilt sensor; and

a seat comprising a seat body on which a user sits and a leg part extending downward, the seat being capable of being raised and lowered between a low position at which the leg part is in contact with the floor surface and a high position at which the leg part separates from the floor surface, and the seat being elastically coupled to the vehicle body frame,

wherein a seat tilt sensor which detects a tilt angle of the seat is provided at the seat.