Express service on the IRT White Plains Road Line began on April 23, 1953 with alternate 5 trains using the middle track between East 180th Street and 149th Street during the weekday rush in the peak direction. These trains skipped all stops between East 180th Street and Third Avenue–149th Street. Starting on October 2, 1953, 5 trains began running express between East 180th Street and Gun Hill Road using the middle track in order to encourage passengers who changed at Gun Hill Road for Third Avenue Elevated service to stay on subway trains. These trains were signed as the 5 Lexington Avenue Thru-Express.