---
kind: "section"
citation: "49 C.F.R. § 236.426"
title: "49"
number: "236.426"
heading: "Interlocking rules and instructions applicable to traffic control systems."
url: "https://uscodex.org/cfr/49/236.426"
---

# §236.426. Interlocking rules and instructions applicable to traffic control systems.


The rules and instructions prescribed in §§ [236.327](/cfr/49/236.327.md) and [236.328](/cfr/49/236.328.md), [§ 236.330](/cfr/49/236.330.md) to [§ 236.334](/cfr/49/236.334.md), inclusive, and [§ 236.342](/cfr/49/236.342.md) shall apply to traffic control systems.


## 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.