DRIVING SUPPORT DEVICE

Provided is a driving support device (1) including a control device configured to enter, in a first situation that is a situation in which an own vehicle travels in a predetermined region (X) before an intersection and an adjacent traveling lane is absent on a first direction side in a crossing direction of a traveling lane (L0) on which the own vehicle is traveling, a state in which start of driving support for changing a traveling direction of the own vehicle to the first direction at the intersection is possible, and enter, in a second situation that is a situation in which the own vehicle travels in the predetermined region (X) and an adjacent traveling lane is present on the first direction side in the crossing direction of the traveling lane (L0), a state in which the start of the driving support is impossible. When transition to the second situation occurs without execution of a lane change after the control device enters the state in which the start of the driving support is possible in the first situation, the control device holds the state in which the start of the driving support is possible until a second time point that is one of: a time point when a predetermined time has elapsed from a first time point that is a time point when the transition to the second situation occurs; or a time point when the own vehicle has traveled over a predetermined distance from the first time point.