A method of storing information for a vehicle, the method using a processor to execute information processing and store an execution result in a storage device, the method comprising: acquiring a detection result from a sensor (220, 231) configured to detect a position of the vehicle and a traveling state of the vehicle; detecting respective disturbances acting on front and rear wheels of the vehicle, on a basis of the traveling state of the vehicle; detecting respective disturbances acting on right and left wheels of the vehicle, on the basis of the traveling state of the vehicle; determining whether or not a physical object existing around the vehicle affects a vehicle speed of the vehicle, the physical object being detected by an object detection device; only when a physical object that affects a vehicle speed of the vehicle does not exist around the vehicle, determining that the vehicle has passed over a speed bump; acquiring a travel history of the vehicle, the travel history including a determination result as to that the vehicle has passed over the speed bump, travel route of the vehicle, vehicle speed of the vehicle, brake operation of the vehicle, and accelerator operation of the vehicle; specifying, from the travel history, positional information of the speed bump as speed bump information; and storing the speed bump information in the storage device for update of the speed bump information in a server; characterized in that: the determining step includes determining whether or not the vehicle has passed over a candidate of the speed bump, on the basis of the respective disturbances acting on the front and rear wheels, and determining that the candidate of the speed bump is a speed bump and that the vehicle has passed over the speed bump, when a difference between the respective disturbances acting on the right and left wheels is not more than a predetermined threshold, the disturbance being an amount of change in rotation speed of the wheel; and the specifying step includes specifying, from the travel history, vehicle speed information of the vehicle, brake operation information of the vehicle, and accelerator operation information of the vehicle when passing over the speed bump as speed bump information. acquiring a detection result from a sensor (220, 231) configured to detect a position of the vehicle and a traveling state of the vehicle; detecting respective disturbances acting on front and rear wheels of the vehicle, on a basis of the traveling state of the vehicle; detecting respective disturbances acting on right and left wheels of the vehicle, on the basis of the traveling state of the vehicle; determining whether or not a physical object existing around the vehicle affects a vehicle speed of the vehicle, the physical object being detected by an object detection device; only when a physical object that affects a vehicle speed of the vehicle does not exist around the vehicle, determining that the vehicle has passed over a speed bump; acquiring a travel history of the vehicle, the travel history including a determination result as to that the vehicle has passed over the speed bump, travel route of the vehicle, vehicle speed of the vehicle, brake operation of the vehicle, and accelerator operation of the vehicle; specifying, from the travel history, positional information of the speed bump as speed bump information; and storing the speed bump information in the storage device for update of the speed bump information in a server; characterized in that: the determining step includes determining whether or not the vehicle has passed over a candidate of the speed bump, on the basis of the respective disturbances acting on the front and rear wheels, and determining that the candidate of the speed bump is a speed bump and that the vehicle has passed over the speed bump, when a difference between the respective disturbances acting on the right and left wheels is not more than a predetermined threshold, the disturbance being an amount of change in rotation speed of the wheel; and the specifying step includes specifying, from the travel history, vehicle speed information of the vehicle, brake operation information of the vehicle, and accelerator operation information of the vehicle when passing over the speed bump as speed bump information. the determining step includes determining whether or not the vehicle has passed over a candidate of the speed bump, on the basis of the respective disturbances acting on the front and rear wheels, and determining that the candidate of the speed bump is a speed bump and that the vehicle has passed over the speed bump, when a difference between the respective disturbances acting on the right and left wheels is not more than a predetermined threshold, the disturbance being an amount of change in rotation speed of the wheel; and the specifying step includes specifying, from the travel history, vehicle speed information of the vehicle, brake operation information of the vehicle, and accelerator operation information of the vehicle when passing over the speed bump as speed bump information.