Orlando Sentinel: The Oviedo company displays electronic ads on trucks that roam Central Florida’s roads. The signs can change images every few seconds, grabbing potential customers’ attention. But, they grab law enforcement’s attention, too. Palm Tree Mobile Billboards has filed one lawsuit against Orange County Sheriff and Florida’s Department of Highway Safety and Motor Vehicles in response to traffic tickets written because of lights on the company’s trucks. A Palm Tree truck driver was cited on two occasions under a state statute that forbids flashing and blue lights on vehicles under many circumstances.