Code of Federal Regulations (Last Updated: July 5, 2024) |
Title 49 - Transportation |
Subtitle B - Other Regulations Relating to Transportation |
Chapter II - Federal Railroad Administration, Department of Transportation |
Part 236 - Rules, Standards, and Instructions Governing the Installation, Inspection, Maintenance, and Repair of Signal and Train Control Systems, Devices, and Appliances |
Subpart C - Interlocking |
Standards |
§ 236.307 - Indication locking.
Latest version.
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§ 236.307 Indication locking.
Indication locking shall be provided for operative approach signals of the semaphore type, power-operated home signals, power-operated switches, movable-point frogs and derails, and for all approach signals except light signals, all aspects of which are controlled by polar or coded track circuits or line circuits so arranged that a single fault will not permit a more favorable aspect than intented to be displayed.
[49 FR 3385, Jan. 26, 1984]