49 CFR 236.106
§ 236.106 Relays.
United States · 49 CFR — Transportation · Status: effective
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- Citation
- 49 CFR 236.106, § 236.106 Relays, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/258983
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Full text
Each relay, the functioning of which affects the safety of train operations, shall be tested at least once every four years except:
(a) Alternating current centrifugal type relay shall be tested at least once every 12 months;
(b) Alternating current vane type relay and direct current polar type relay shall be tested at least once every 2 years; and
(c) Relay with soft iron magnetic structure shall be tested at least once every 2 years.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.