You are driving with main beam lights on in darkness. When do you have to dip your headlights?

Your answer is correct because German traffic rules require you to dip your main beam headlights in situations where they could dazzle or endanger others. Specifically, you must dip your lights when driving on roads with adequate street lighting since the main beam is unnecessary and may blind other road users. Additionally, you must dip your lights if you have to wait at a rail crossing so that other drivers or pedestrians are not dazzled while you are stationary. However, it's not required to dip the main beam simply because pedestrians are moving ahead in the same direction; the main concern is avoiding dazzling others directly. This ensures safety and comfort for all road users at night or in low visibility conditions.