How do the Audi A3's lane departure warning and lane keep assist features work?

I want to understand the technology behind the Audi A3's lane departure warning and lane keep assist features and how they contribute to driver safety.

The lane departure warning feature uses cameras to detect lane markings and will alert you if you unintentionally leave your lane without signaling. It can also provide gentle steering input to help keep you in your lane. If you want to turn off lane departure warning, you can do so in the vehicle settings.

Lane keep assist takes the lane departure warning a step further by actively steering your vehicle back into its lane if it detects you drifting out of it. This helps prevent potential accidents caused by driver distraction or tiredness. Of course, the feature is not meant to be a substitute for attentive driving.

To ensure the lane keep assist feature works properly, make sure your windshield is clean and free of obstructions. Also, keep both of your hands on the steering wheel at all times, as some vehicles may disengage the feature if they detect you are not actively steering.