A very important thing manufactor need to address is cutoff reflector that stop blinding everyone. It was ok for a while with 600 lumens light but now with them crossing the 1500 lumens and some even getting into the 3000 lumens, it is foreseeable that driver is going to complaint. I cannot use my 2500 lumen light simply because it shines everywhere including up, although it sure is neat to be able to see the driver's head when I am right behind them.