---
kind: "section"
citation: "49 C.F.R. § 236.729"
title: "49"
number: "236.729"
heading: "Cock, double heading."
url: "https://uscodex.org/cfr/49/236.729"
---

# §236.729. Cock, double heading.


A manually operated valve by means of which the control of brake operation is transferred to the leading locomotive.


## Notes

### 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.