DRIVING ASSISTANCE APPARATUS AND DRIVING ASSISTANCE APPARATUS PROCESSING METHOD

The driving assistance apparatus includes an entrance width acquisition unit configured to acquire an entrance width of a roundabout in front of the vehicle based on an image captured by a front camera of the vehicle, or position information and map information of the vehicle, an other vehicle passage time calculation unit configured to calculate a passage time when another vehicle traveling in the roundabout passes the entrance width based on the image captured by the front camera of the vehicle, a vehicle speed estimation unit configured to estimate a vehicle speed of the other vehicle based on the entrance width and the passage time, and a vehicle speed setting unit configured to set a set vehicle speed for roundabout traveling based on the vehicle speed of the other vehicle.