A driver assistance system for a vehicle having a decision engine and a plurality of active object-detection sensors including two radar sensors mounted at opposed locations on the vehicle relative to a longitudinal centerline of the vehicle. A field of view of each radar sensor is directed away from the centerline and forward of the vehicle and overlaps with the field of view of the other radar sensor in a region of overlap crossing the centerline forward of the vehicle. The decision engine receives signals from the sensors and determines the presence of an object in the regions of overlap on the basis of signals from only each of the two radar sensors among the active object-detection sensors of the system. The decision engine is thus able to command vehicle functions such as braking or acceleration on the basis of the determination.