Standards

  1. Law
  2. CFR 49
  3. Transportation
  4. Other Regulations Relating to Transportation
  5. Federal Railroad Administration, Department of Transportation
  6. Rules, Standards, and Instructions Governing the Installation, Inspection, Maintenance, and Repair of Signal and Train Control Systems, Devices, and Appliances
  7. Interlocking
  8. Standards

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Section
236.301

Where signals shall be provided.

Section
236.302

Track circuits and route locking.

Section
236.303

Control circuits for signals, selection through circuit controller operated by switch points or by switch locking mechanism.

Section
236.304

Mechanical locking or same protection effected by circuits.

Section
236.305

Approach or time locking.

Section
236.306

Facing point lock or switch-and-lock movement.

Section
236.307

Indication locking.

Section
236.308

Mechanical or electric locking or electric circuits; requisites.

Section
236.309

Loss of shunt protection; where required.

Section
236.310

Signal governing approach to home signal.

Section
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.

Section
236.312

Movable bridge, interlocking of signal appliances with bridge devices.

Section
236.313

§ 236.313 [Reserved]

Section
236.314

Electric lock for hand-operated switch or derail.