VIEWPOINT - Flashing Headlights to Warn of Police
It has always struck me that warning of a speed trap is a violation no different to being an accessory to a crime by warning the bank robber that the police are coming. Certainly very difficult to enforce.
And to take it a step further, what about radio stations that warn drivers over the air of speed enforcement areas. Could they increase the scope of what they perceive as public service to include DUI stop checks?