Originally Posted by
Dunbar
I'm seeing more and more of them but they haven't exactly caught on like wildfire. They really are totally blinding after dark, not necessarily in a good way. On the bike path or MUP they are downright disrespectful. If you're duking it out on the road after dark I think they're fine. I look forward to bike headlights that employ a cutoff shield like in automobiles.
Most dynamo powered lights follow the German law and have a very defined pattern that won't shine in oncoming eyes, if they're aligned correctly. These Chinese battery powered ones do not.