Contactless power feed system, ground power feed device, and contactless power feed method

A contactless power feed method that is executed by a first ground power feed device configured to perform contactless power feed on a moving body and a second ground power feed device that is a ground power feed device that has a possibility of performing the contactless power feed to the moving body subsequent to the first ground power feed device, the contactless power feed method comprising:

• transmitting a passing signal informing about passage of the moving body from the first ground power feed device to the second ground power feed device when entry of the moving body to a first power feed section in which the contactless power feed is performed by the first ground power feed device is confirmed;
• transmitting, when the second ground power feed device receives the passing signal from the first ground power feed device, a power feed stop signal for stopping the contactless power feed from the second ground power feed device to the first ground power feed device when confirmation of entry or approach of the moving body to a second power feed section in which the contactless power feed is performed by the second ground power feed device is not possible even after a predetermined time has elapsed after receiving the passing signal;
• and
• stopping the contactless power feed in the first power feed section when the first ground power feed device receives the power feed stop signal from the second ground power feed device.