How does lane departure warning work in the Audi A8?

I recently purchased an Audi A8 and I noticed it has a lane departure warning system. Can someone explain to me how this feature works and if it's effective?

Lane departure warning systems use cameras and sensors to monitor the vehicle's position within the lane markings on the road. If the vehicle begins to drift out of the lane, the system will alert the driver with visual and audible warnings. It's important to note that this feature is not foolproof and should not be relied upon as the only means of staying in your lane.

The camera for the lane departure warning system is typically located near the rearview mirror, and it relies on contrast between the lane markings and the surrounding environment. So if you're driving on a road with faded or poorly marked lanes, the system may not be as effective.

In my experience, the lane departure warning system in the Audi A8 is quite effective. However, it's important to pay attention to the road and not solely rely on this feature. I have found it to be most helpful on long drives or when I am feeling fatigued.