DRIVER ASSISTANCE SYSTEM AND COMPUTER-READABLE RECORDING MEDIUM

A driver assistance system includes at least one processor and at least one memory communicably coupled to the processor. The processor is configured to acquire data regarding presence or absence of a passer-by in a blind spot region as viewed from a vehicle to be assisted. The presence or the absence of the passer-by is identified based on, at least, recognition results by object recognition systems including an object recognition system other than an object recognition system of the vehicle to be assisted. The processor is configured to calculate certainty of a recognition result of the presence or the absence of the passer-by based on, at least, the number of the object recognition systems that recognize the same passer-by, and carry out processing of reducing a risk of collision between the vehicle to be assisted and the passer-by, in accordance with the certainty calculated.