LAKE RIDGE, Va. - There appears to be another instance of a police impersonator in Virginia. Just two weeks after an impersonator stopped a woman driver in Dumfries, a similar incident occurred in Lake Ridge. Authorities say a man dressed like a cop used a flashing blue light in his car to pull over a woman on the Prince William County Parkway. It happened around 8 a.m. Monday. The man apparently came up to the woman's car, flashed a piece of paper and told her to drive to the other side of the road. After telling her she was speeding,...