In a lane departure warning system, the driver will be warned (using visual, vibration or sound warnings), when the vehicle is going to exit its lane or turn off of a highway or an arterial road.
If you drift off the lane unintentionally, this feature will help guide you back into your lane and prevent crashes.
This feature relies on roadway markings to operate. It’s designed to alert you if your car begins to drift out of a lane with one or more types of warnings.