DRIVING SUPPORT DEVICE, DRIVING SUPPORT METHOD, AND DRIVING SUPPORT PROGRAM

Provided is a driving support device () including: a front sensor configured to detect a traffic participant existing in a predetermined region on a left front side and a right front side of an own vehicle, and to acquire information on the traffic participant; a warning device configured to execute warning for an occupant of the own vehicle; and a processor configured to control the warning device. The processor is configured to: predict, when a turn intention that is an intention of a driver to turn the own vehicle toward a side on which the traffic participant exists is detected within a predetermined time from a first time point at which the front sensor comes to be unable to detect the traffic participant due to deviation of the traffic participant from the region as a result of approach of the own vehicle to the traffic participant, based on the information on the traffic participant before the first time point, a distance between the traffic participant and the own vehicle in a front-rear direction at a second time point at which the turn intention is detected; and cause the warning device to execute the warning when the predicted distance between the traffic participant and the own vehicle in the front-rear direction is within a predetermined range.