---
kind: "section"
citation: "49 C.F.R. § 236.825"
title: "49"
number: "236.825"
heading: "System, automatic train control."
url: "https://uscodex.org/cfr/49/236.825"
---

# §236.825. System, automatic train control.


A system so arranged that its operation will automatically result in the following:

- (a) A full service application of the brakes which will continue either until the train is brought to a stop, or, under control of the engineman, its speed is reduced to a predetermined rate.
- (b) When operating under a speed restriction, an application of the brakes when the speed of the train exceeds the predetermined rate and which will continue until the speed is reduced to that rate.

## 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.