
Truck drivers often signal each other to warn abou... ...gal? Hill decided to argue his case in court as a free speech issue ... and won! According to a Jackson... ...nearby is illegal because flashing headlights is free speech . "The citation was clearly given to punish t...
http://www.neatorama.com/2014/04/12/Flashing-Headlights-to-Warn-Other-Drivers-of-Cops-is-Free-Speech/