49 CFR 236.504
§ 236.504 Operation interconnected with automatic block-signal system.
United States · 49 CFR — Transportation · Status: effective
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- Citation
- 49 CFR 236.504, § 236.504 Operation interconnected with automatic block-signal system, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/259055
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Full text
(a) A continuous inductive automatic train stop or train control system shall operate in connection with an automatic block signal system and shall be so interconnected with the signal system as to perform its intended function in event of failure of the engineer to acknowledge or obey a restrictive wayside signal or a more restrictive cab signal.
(b) An intermittent inductive automatic train stop system shall operate in connection with an automatic block signal system and shall be so interconnected with the signal system that the failure of the engineer to acknowledge a restrictive wayside signal will cause the intermittent inductive automatic train stop system to perform its intended function.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.