34.42.00 Railway Signaling and Control Equipment
34.42.33 Yard Management Equipment
34.42.13 Railway Signals 34.42.13.13 General Railway Signal Requirements 34.42.13.16 Signal Solid State Coded Track Circuits 34.42.16 Train Control Wires and Cables 34.42.19 Vital Interlocking Logic Controllers 34.42.23 Railway Control Equipment 34.42.23.13 Mainline Train Control Room Equipment 34.42.23.16 Yard Train Control Room Equipment 34.42.23.19 Integrated Control Equipment 34.42.23.23 Interlocking Railway Control Equipment 34.42.26 Rail Network Equipment 34.42.29 Station Agent Equipment 34.42.33 Yard Management Equipment 34.42.36 Supervisory Control and Data Acquisition