---
kind: "section"
citation: "49 C.F.R. § 543.9"
title: "49"
number: "543.9"
heading: "Duration of exemption."
url: "https://uscodex.org/cfr/49/543.9"
---

# §543.9. Duration of exemption.


Each exemption under this part continues in effect unless it is modified or terminated under [§ 543.10](/cfr/49/543.10.md), or the manufacturer ceases production of the exempted line.


## Notes

### Amendments

[81 FR 66841, Sept. 29, 2016]

### Authority

Authority: 49 U.S.C. 322, 33101, 33102, 33103, 33104 and 33105; delegation of authority at 49 CFR 1.95.

### Source

Source: 52 FR 33829, Sept. 8, 1987, unless otherwise noted.

### Amendments

[81 FR 66841, Sept. 29, 2016]