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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 49 - Transportation |
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Subtitle B - Other Regulations Relating to Transportation |
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Chapter II - Federal Railroad Administration, Department of Transportation |
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Part 236 - Rules, Standards, and Instructions Governing the Installation, Inspection, Maintenance, and Repair of Signal and Train Control Systems, Devices, and Appliances |
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Subpart C - Interlocking |
| Rules and Instructions |
| § 236.326 - Mechanical locking removed or disarranged; requirement for permitting train movements through interlocking. |
| § 236.327 - Switch, movable-point frog or split-point derail. |
| § 236.328 - Plunger of facing-point lock. |
| § 236.329 - Bolt lock. |
| § 236.330 - Locking dog of switch-and-lock movement. |
| § 236.334 - Point detector. |
| § 236.335 - Dogs, stops and trunnions of mechanical locking. |
| § 236.336 - Locking bed. |
| § 236.337 - Locking faces of mechanical locking; fit. |
| § 236.338 - Mechanical locking required in accordance with locking sheet and dog chart. |
| § 236.339 - Mechanical locking, maintenance requirements. |
| § 236.340 - Electromechanical interlocking machine; locking between electrical and mechanical levers. |
| § 236.341 - Latch shoes, rocker links, and quadrants. |
| § 236.342 - Switch circuit controller. |
| §§ 236.331--236.333 - [Reserved] |
| Inspection and Tests |
| § 236.376 - Mechanical locking. |
| § 236.377 - Approach locking. |
| § 236.378 - Time locking. |
| § 236.379 - Route locking. |
| § 236.380 - Indication locking. |
| § 236.381 - Traffic locking. |
| § 236.382 - Switch obstruction test. |
| § 236.383 - Valve locks, valves, and valve magnets. |
| § 236.384 - Cross protection. |
| § 236.385 - [Reserved] |
| § 236.386 - Restoring feature on power switches. |
| § 236.387 - Movable bridge locking. |
| Standards |
| § 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. |