The Fairfax County Department of Transportation discussed converting secondary roads to the primary system at their May 6th meeting. They answered questions about funding advantages for Braddock Road if converted, and that primary road designations don't affect land development cases directly but national highway routes have different criteria. Staff was asked to evaluate Old Keene Mill Road and Air and Space Museum Parkway for potential conversion, and if approved by the Board, VDOT requires notification and limits conversions to 50 miles annually statewide.