Abstract: The disclosure includes a steering angle detection part detecting a steering angle of a handle for steering a front wheel of a vehicle, wherein the vehicle includes drive wheels, which are left and right rear wheels respectively provided with drive motors, and a steering wheel, which is the front wheel; a steering angle determination part determining whether the steering angle exceeds a predetermined steering angle reference value; and a motor control part reducing an output supplied to the drive motors of the rear wheels corresponding to a direction of the steering angle in a case that the steering angle determination part determines that the steering angle exceeds the steering angle reference value.

Abstract: To expand the collection market of electronic data to be collected, on the Internet which is communication lines, a plurality of collectors are connected to an issuer who issues electronic data as a collection target for the collectors, the issuer expresses the issue of the electronic data to the collectors, and when a contract on the transfer of the electronic data is concluded between the issuer and the collectors, the issuer issues all the contents of the electronic data on which contract has been concluded to the collectors without leaving anything on the part of the issuer.