Yeah don't even get me started about the poor American headlight standards. They are horrible. Way too much stray light, way too much glare, poor cutoff, poor distance illumination, lack of vehicle height standard, etc...
SAE FMVSS 108 standards are rediculus compared to the ECE regulations. ECE have excellent cutoff, well defined pattern, and no glare! As an accident investigator and cop I have been campaigning for years to get SAE standards changed to no avail. Now with the advent of cheap HID retrofits everybody installs HID's with even more glare in a poorly designed housing. 25% of vehicles on the road have annoying glare. Not even mentioning the HID retrofits that are just rediculusly blinding. Nothing better then a big SUV with HID's in the low beams and fogs blinding everyone on the road. Thats a $120 fix-it ticket.
On my last vehicle I installed new ECE spec headlamp housings and they were awesome. Great lights with no glare!
And don't even get me started about the 9004/9007 dual filament bulbs. Those are an abysmal failure. Instead of crappy low beams you now have crappy low and crappy high beams.
Ok I am off my soap box now. I could spend the next 4 hours discussing headlights.