ANNUNCIATION METHOD, ANNUNCIATION DEVICE, AND STORAGE MEDIUM

A potential collision risk between a vehicle and a potential traffic participant predicted to be present ahead in a direction of travel of the vehicle is foreseen. A first annunciation is performed notifying those in a vicinity that the vehicle is traveling, using an externally-directed annunciator installed in the vehicle, in response to the potential collision risk being foreseen. Note that when a manifested collision risk between the vehicle and a manifested traffic participant confirmed ahead in the direction of travel of the vehicle is sensed, a second annunciation notifying those in the vicinity regarding collision avoidance actions of the vehicle may be performed using the externally-directed annunciator. However, the first annunciation is prioritized over the second annunciation as long as the potential collision risk continues.