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 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.
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