How does the active lane assist work in the Audi A4?

I've heard that the Audi A4 has active lane assist, but I'm not sure how it actually works. Can someone explain the technology behind it and how it helps with driving?

The active lane assist in the Audi A4 uses a camera to detect lane markings and helps keep the car within the marked lanes on the road. It can also provide corrective steering if the car starts to drift out of its lane.

Active lane assist is a great feature in the Audi A4 that helps with long highway drives. It's especially helpful for those who may have trouble staying centered in their lane. I've found it to be very intuitive and responsive.