CFR
- Title 1 - General Provisions
- Title 2 - Grants and Agreements
- Title 3 - The President
- Title 4 - Accounts
- Title 5 - Administrative Personnel
- Title 6 - Domestic Security
- Title 7 - Agriculture
- Title 8 - Aliens and Nationality
- Title 9 - Animals and Animal Products
- Title 10 - Energy
- Title 11 - Federal Elections
- Title 12 - Banks and Banking
- Title 13 - Business Credit and Assistance
- Title 14 - Aeronautics and Space
- Title 15 - Commerce and Foreign Trade
- Title 16 - Commercial Practices
- Title 17 - Commodity and Securities Exchanges
- Title 18 - Conservation of Power and Water Resources
- Title 19 - Customs Duties
- Title 20 - Employees' Benefits
- Title 21 - Food and Drugs
- Title 22 - Foreign Relations
- Title 23 - Highways
- Title 24 - Housing and Urban Development
- Title 25 - Indians
- Title 26 - Internal Revenue
- Title 27 - Alcohol, Tobacco Products and Firearms
- Title 28 - Judicial Administration
- Title 29 - Labor
- Title 30 - Mineral Resources
- Title 31 - Money and Finance: Treasury
- Title 32 - National Defense
- Title 33 - Navigation and Navigable Waters
- Title 34 - Education
- Title 35 - Panama Canal
- Title 36 - Parks, Forests, and Public Property
- Title 37 - Patents, Trademarks, and Copyrights
- Title 38 - Pensions, Bonuses, and Veterans' Relief
- Title 39 - Postal Service
- Title 40 - Protection of Environment
- Title 41 - Public Contracts and Property Management
- Title 42 - Public Health
- Title 43 - Public Lands: Interior
- Title 44 - Emergency Management and Assistance
- Title 45 - Public Welfare
- Title 46 - Shipping
- Title 47 - Telecommunication
- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
SUBPART C—Interlocking (§236.301 to §236.387)
- 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.
- 236.314—Electric lock for hand-operated switch or derail.
- 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.
- 236.376—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.
- 236.386—Restoring feature on power switches.
- 236.387—Movable bridge locking.
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