I am not sure what you are asking here.
this will tell you your state's laws concerning lighting and such:
http://www.amadirectlink.com/legisltn/laws.asp
Personally I like my signals and stuff to be seen so I keep the factory big ass lights for a long as I can, when I do replace them with smaller lights I use LEDS because those fuckers are bright (make sure you run a ballast resistor). I am a cheap bastard so often I use trailer lights for brake lights, they are DOT approved and cheap.
this will tell you your state's laws concerning lighting and such:
http://www.amadirectlink.com/legisltn/laws.asp
Personally I like my signals and stuff to be seen so I keep the factory big ass lights for a long as I can, when I do replace them with smaller lights I use LEDS because those fuckers are bright (make sure you run a ballast resistor). I am a cheap bastard so often I use trailer lights for brake lights, they are DOT approved and cheap.