i dont ever flash my lights anyway.. reason being.. i have hyperwhite headlights pointed up for a reason.. they are much brighter that way.. it blinds people i'm behind (which lets them know to move the fuck outta my way) and it blinds oncoming traffic (no on purpose).. i get flashed a lot b/c of this and when they flash me i flash back...it really pisses me off, so i don't want to piss anyone off!