the light itself doesnt travel any different then the light from a halogen headlamp. the frequency of the light itself could change, but it still doesnt change how light travels. if ur headlights glare with stock halogens then hids will just increase the brightness of the glare. ive had tones 6500k for about a year now, have no problems with it. it also really depends on teh cop, usually i dont think they care, but if they really wanted to i guess they could ticket you for it. but the kit itself takes about 5 minutes to disconnect and reconnect ur stock halogens.