There were flashing lights atop his sports utility vehicle and what appeared to be a police badge in his hand, but it was the man he tried to pull over who was the real police detective. Robert Lane, 25, was arrested Tuesday on charges of criminal impersonation and aggravated unlicensed operation of a motor vehicle, Suffolk County police said. Lane was driving an SUV fitted with flashing lights when he tried to stop the off-duty New York police detective on a highway on Long Island, Suffolk police said. They said Lane told investigators the detective had cut him off. The detective got suspicious when Lane drove up alongside him, identified himself as an officer and flashed a small police badge, Suffolk police said.