---
kind: "section"
citation: "49 C.F.R. § 236.106"
title: "49"
number: "236.106"
heading: "Relays."
url: "https://uscodex.org/cfr/49/236.106"
---

# §236.106. Relays.


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.

## Notes

### Amendments

[49 FR 3384, Jan. 26, 1984]

### Authority

Authority: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.

### Source

Source: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.

### Amendments

[49 FR 3384, Jan. 26, 1984]