Risk potential calculation device, vehicle driving assistance device, vehicle equipped with the device, and risk potential calculation method

摘要

A vehicle driving assist system (1) of the present invention detects a vehicle condition and a traveling environment of a subject vehicle; and calculates an extent of influence on the subject vehicle due to future changes in surrounding environment. The vehicle driving assist system (1) then calculates the risk potential around the subject vehicle based on the extent of influence. Operation reaction force of an accelerator pedal (80) is controlled according to the risk potential thus calculated.