Driving support apparatus

A driving support apparatus that is communicably connected to an imaging portion that images an adjacent lane on a rear side of a subject vehicle, a situation acquisition that acquires information on whether a plurality of following vehicles travelling in the adjacent lane on the rear side of the subject vehicle are present, or not, and information on positions of the plurality of following vehicles, and a display portion that displays an image, the driving support apparatus comprising:

• an image acquisition that acquires a captured image captured by the imaging portion;
• a calculator that calculates distance and relative speed between the subject vehicle and a following vehicle, and distances and relative speeds between the following vehicles, on a basis of the information acquired by the situation acquisition;
• an evaluator that evaluates a degree of risk caused when the subject vehicle changes a lane to the adjacent lane with respect to the following vehicles on a basis of, calculated by the calculator, the distance and relative speed between the subject vehicle and the following vehicle, and the distances and the relative speeds between the following vehicles;
• and
• a display controller that
• creates support information on the degree of risk associated with a lane change in association with road sections based on positions at which the following vehicles are present on a basis of an evaluation result of the degree of risk by the evaluator, and
• displays a support image in which a created support information is superimposed on the captured image at a corresponding position on the display portion.