By monitoring road markings, LKA detects if you appear to unintentionally move out of your lane. If you do, your steering wheel will vibrate to warn you. If lane departure continues it will also direct you back into your lane by applying steering torque, unless your indicator is on.
Driver-assist features are supplemental and do not replace the driver’s attention, judgment and need to control the vehicle. May not operate in some driving and road conditions (including at certain speeds) or adverse weather.