49 CFR Topic
Standards
November 18, 2020
§
236.301
Where signals shall be provided
§
236.302
Track circuits and route locking
§
236.303
Control circuits for signals, selection through circuit controller operated by switch points or by switch locking mechanism
§
236.304
Mechanical locking or same protection effected by circuits
§
236.305
Approach or time locking
§
236.306
Facing point lock or switch-and-lock movement
§
236.307
Indication locking
§
236.308
Mechanical or electric locking or electric circuits; requisites
§
236.309
Loss of shunt protection; where required
§
236.310
Signal governing approach to home signal
§
236.311
Signal control circuits, selection through track relays or devices functioning as track relays and through signal mechanism contacts and time releases at automatic interlocking
§
236.312
Movable bridge, interlocking of signal appliances with bridge devices
§
236.313
[Reserved]
§
236.314
Electric lock for hand-operated switch or derail
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