DRIVING SUPPORT DEVICE

The driving support device includes a vehicle speed control unit that sets a target vehicle speed of the vehicle and controls a speed of the vehicle based on the target vehicle speed, and an operation state determination unit that determines whether or not a turning assistance function that assists turning of the vehicle can be operated in a curve in front of the vehicle. When it is determined that the turning assistance function can be operated, the vehicle speed control unit increases the target vehicle speed in the curve as compared with a case where it is determined that the turning assistance function cannot be operated.