49 CFR 236.205
§ 236.205 Signal control circuits; requirements.
United States · 49 CFR — Transportation · Status: effective
Cite this
- Citation
- 49 CFR 236.205, § 236.205 Signal control circuits; requirements, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/258993
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Full text
The circuits shall be so installed that each signal governing train movements into a block will display its most restrictive aspect when any of the following conditions obtain within the block:
(a) Occupancy by a train, locomotive, or car,
(b) When points of a switch are not closed in proper position,
(c) When an independently operated fouling point derail equipped with switch circuit controller is not in derailing position,
(d) When a track relay is in de-energized position or a device which functions as a track relay is in its most restrictive state; or when signal control circuit is deenergized.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.