The latest in a list of world-first safety features from Infiniti, BSI takes blind-spot technology to another level by introducing an element of side collision protection. As well as giving the driver both visual and audible warnings of another vehicle in the blind-spot area which is detected by using radar, BSI intervenes if the driver ignores the warnings and attempts to steer into the other vehicle's path. The intervention is in the form of a directional adjustment, executed automatically. This is achieved by selective braking on one side of the car to create a "yaw" effect that eases the vehicle back into its original lane.