Abstract: Provided is a driving assistance system including a storage device having a program stored therein and a hardware processor, wherein the hardware processor executes the program stored in the storage device, to thereby recognize an object which is present outside of a vehicle on the basis of a detection result of at least one of a radar device and an imaging device which are mounted in the vehicle, perform driving assistance for the vehicle on the basis of a recognition result, and determine a degree of matching between a portion of a contour line of the object and a road partition line and suppress an operation of the driving assistance in a case where the degree of matching is equal to or greater than a threshold.

Abstract: A driving support device includes a storage device storing a program and a hardware processor. The hardware processor executes the program stored in the storage device to perform driving support of a vehicle based on a detection result of at least one of a radar device and an imaging device mounted in the vehicle, determine whether the vehicle is traveling in an underpass which is a traffic route along which the vehicle is able to pass under an overlying structure, and suppress an operation of the driving support when the vehicle is determined to be traveling under the underpass.