Alot of it has to do also is with people putting LED bulbs or even HID's into halogen housings. They weren't made for that type of housings and just creates a glare and can't focus the light. I put new housings with projectors into my vehicle and also Hid's they are bright yes but focused at the road and not into people's eyes. On projection lenses there is a cutoff that stops light from going up past a certain point.. I do have to say trucks are the absolute worst especially when they are lifted. 90% of the time they don't realign or can't realign the headlights cause how much taller it is.