Quote Originally Posted by LightningSpeed
BUT, HOW CAN THE POLICE SEE IT IF YOU'VE ALREADY PASSSSED THEM???
sometime they set up a trap for people who flash their lights. for ex. you pass a cop and then yo warn the on coming traffic but sitting up ahead is another cop watching for people to flash.

so yes this is illegal. i learned it in DD class

you are able to warn people of hazard ahead then the prop way is to cut lights off then back on. do not use your high beams