A group of Florida residents have filed a class-action lawsuit against the state highway patrol and other traffic-enforcement agencies over the issuing of headlight-flashing tickets. The lawsuit stemmed from an incident in 2009 where one of the plaintiffs was given a ticket for flashing his lights to warn other motorists about police parked along the highway. The suit claims these tickets are a violation of the first amendment since "flashing of lights to communicate with another driver is clearly speech."  Rick Neale, USA Today  09/18/2011