SUBPART A—Rules and Instructions: All Systems (§236.1 to §236.110)
- 236.1—Plans, where kept.
- 236.2—Grounds.
- 236.3—Locking of signal apparatus housings.
- 236.4—Interference with normal functioning of device.
- 236.5—Design of control circuits on closed circuit principle.
- 236.6—Hand-operated switch equipped with switch circuit controller.
- 236.7—Circuit controller operated by switch-and-lock movement.
- 236.8—Operating characteristics of electromagnetic, electronic, or electrical apparatus.
- 236.9—Selection of circuits through indicating or annunciating instruments.
- 236.10—Electric locks, force drop type; where required.
- 236.11—Adjustment, repair, or replacement of component.
- 236.12—Spring switch signal protection; where required.
- 236.13—Spring switch; selection of signal control circuits through circuit controller.
- 236.14—Spring switch signal protection; requirements.
- 236.15—Timetable instructions.
- 236.16—Electric lock, main track releasing circuit.
- 236.17—Pipe for operating connections, requirements.
- 236.18—Software management control plan.
- 236.21—Location of roadway signals.
- 236.22—Semaphore signal arm; clearance to other objects.
- 236.23—Aspects and indications.
- 236.24—Spacing of roadway signals.
- 236.26—Buffing device, maintenance.
- 236.51—Track circuit requirements.
- 236.52—Relayed cut-section.
- 236.53—Track circuit feed at grade crossing.
- 236.54—Minimum length of track circuit.
- 236.55—Dead section; maximum length.
- 236.56—Shunting sensitivity.
- 236.57—Shunt and fouling wires.
- 236.58—Turnout, fouling section.
- 236.59—Insulated rail joints.
- 236.60—Switch shunting circuit; use restricted.
- 236.71—Signal wires on pole line and aerial cable.
- 236.73—Open-wire transmission line; clearance to other circuits.
- 236.74—Protection of insulated wire; splice in underground wire.
- 236.76—Tagging of wires and interference of wires or tags with signal apparatus.
- 236.101—Purpose of inspection and tests; removal from service of relay or device failing to meet test requirements.
- 236.102—Semaphore or searchlight signal mechanism.
- 236.103—Switch circuit controller or point detector.
- 236.104—Shunt fouling circuit.
- 236.105—Electric lock.
- 236.106—Relays.
- 236.107—Ground tests.
- 236.108—Insulation resistance tests, wires in trunking and cables.
- 236.109—Time releases, timing relays and timing devices.
- 236.110—Results of tests.