This is Volkswagen’s Dynamic light assist Technology

The dynamic main-beam control Dynamic Light Assist improves visibility at night.

The system can detect oncoming vehicles and vehicles ahead and automatically masks the corresponding areas of your main beam headlights.

In built-up areas, the vehicle also switches automatically from main beam to dipped beam. This means that you can drive for longer and more often with the main beam on. Streets are illuminated better and obstacles can be detected earlier .