Working vehicle and attachment usage system

An attachment usage system comprising:

• a hitch to attach and detach an attachment thereto and therefrom, the hitch being provided on a working vehicle;
• one or more transmitters to periodically transmit one or more wireless signals which include respective one or more pieces of identification information of one or more of the attachments and which are compliant with a near field communication standard, the one or more transmitters being provided in or on the one or more attachments;
• a receiver to receive the one or more wireless signals which are transmitted from the one or more transmitters, the receiver being provided in or on the working vehicle;
• and
• a controller;
• wherein
• the controller is configured or programmed to:
• cause a first memory to store, for a period of time, the one or more pieces of identification information included in the one or more wireless signals received by the receiver;
• when one of the one or more attachments is attached to the hitch, select a piece of identification information of the attachment attached to the hitch from the one or more pieces of identification information stored in the first memory and start a predetermined process according to the selected piece of identification information;
• and
• even if the receiver receives one or more wireless signals from one or more transmitters before the attachment is allowed to be detached from the hitch, continue to perform the predetermined process without performing selection of a piece of identification information again.