One problem is this: 1. Some regions have mandatory DRLs (daytime running lights). 2. In many headlights, the DRL is implemented by dimming the high beam lamp

One problem is this: 1. Some regions have mandatory DRLs (daytime running lights). 2. In many headlights, the DRL is implemented by dimming the high beam lamp. 3. LED lamps do not dim properly; compared to incandescent bulbs they dim only slightly. The result is high beam glare from cars in broad daylight everywhere you go.