Here’s the “curtain open/close” of the automatic high beam function in the new 2023 BMW M340i with option 522 - Adaptive Headlights with Cornering Function. The auto high beams do a sharp on/off when other vehicles are present. When approaching junctions and no other cars are present, the curtain effect does it’s thing.
In the US market, the anti-dazzle feature is decoded with option 5AP.
