The Rail Transit Fixed Structures Committee develops and maintains standards and recommended practices covering rail transit system infrastructure. The committee has developed documents covering the inspection and maintenance of bridges, tunnels, stations, yards, shops, track power distribution systems and signal systems. In addition through the APTA Elevators and Escalators Technical Forum, the Committee approved design guidelines for heavy duty transit system escalators and elevators. In the future, the Committee Plans to work through AREMA to develop a standard for the design and installation of urban street embedded track.