49 CFR 236.756
§ 236.756 Lock, bolt.
United States · 49 CFR — Transportation · Status: effective
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- Citation
- 49 CFR 236.756, § 236.756 Lock, bolt, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/259159
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Full text
A mechanical lock so arranged that if a switch, derail or movable-point frog is not in the proper position for a train movement, the signal governing that movement cannot display an aspect to proceed; and that will prevent a movement of the switch, derail or movable-point frog unless the signal displays its most restrictive aspect.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.