DRIVING ASSISTANCE METHOD, AND DRIVING ASSISTANCE DEVICE, DRIVING CONTROL DEVICE, VEHICLE, DRIVING ASSISTANCE PROGRAM, AND RECORDING MEDIUM USING SAID METHOD

The driving assistance device acquires, from an autonomous driving controller that determines an action of a vehicle during autonomous driving of the vehicle, action information indicating a first action that the vehicle is caused to execute. The driving assistance device acquires, from a detector that detects a surrounding situation and a travel state of the vehicle, detection information indicating a detection result. The driving assistance device determines a second action which is executable in place of the first action, based on the detection information. The driving assistance device generates a first image representing the first action and a second image representing the second action. The driving assistance device outputs the first image and the second image to a notification device such that the first image and the second image are displayed within a fixed field of view of a driver of the vehicle.