Lane keep notifies the driver if he/she drifts over the lane line. It does not warn the driver of a car in their blind spot or the lane they want to move into.
Yes, they are 2 different features. The cameras help with lane keeping. The ultrasonic ones would detect something too close. Maybe the cameras help with that, too.
Lane keep notifies the driver if he/she drifts over the lane line. It does not warn the driver of a car in their blind spot or the lane they want to move into.