Method for Predicting Behavior of Other Vehicle, Device for Predicting Behavior of Other Vehicle, and Driving Assistance Method

An other-vehicle behavior prediction method for predicting behavior of a vehicle in a vicinity of a host vehicle, the method comprising:

• calculating a travel path of the host vehicle;
• detecting a position of an intersection present on the travel path of the host vehicle and within a predetermined distance from the host vehicle;
• detecting a position of another vehicle in the vicinity of the host vehicle before the intersection;
• and
• when there is a first oncoming vehicle on a road ahead of the travel path of the host vehicle turning right or left at the intersection, calculating a host-vehicle passing area through which the host vehicle passes when proceeding through the intersection and an other-vehicle passing area through which the first oncoming vehicle is predicted to pass when proceeding through the intersection, calculating a space between the host-vehicle passing area and the other-vehicle passing area, calculating a distance between the first oncoming vehicle and the intersection, and predicting, based on the space and the distance, a probability that the first oncoming vehicle will proceed through the intersection ahead of the host vehicle.