Speed cameras are aimed at U.S. Route 127, in New Miami, Ohio, Feb. 25, 2014 . Under new federal guidance issued Wednesday, Feb. 2, 2022, states can now tap billions of federal highway dollars for roadway safety programs such as automated traffic enforcement. They are being told that cameras that photograph speeding vehicles are an established way to help bring down rising traffic deaths. (AP Photo/Al Behrman, File)