49 CFR 236.307
§ 236.307 Indication locking.
United States · 49 CFR — Transportation · Status: effective
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- Citation
- 49 CFR 236.307, § 236.307 Indication locking, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/259003
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Full text
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 intended to be displayed.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.