# Respiratory dysfunction — Medical conditions that disqualify a commercial driver under 49 CFR 391.41

For Respiratory dysfunction, standard, as the regulation states it is (5) Has no established medical history or clinical diagnosis of a respiratory dysfunction likely to interfere with his/her ability to control and drive a commercial motor vehicle safely;; paragraph is (b)(5); regulation section is 49 CFR 391.41, recorded from its source on 2026-08-31; source re-checked 2026-09-15.

- **Disqualifying condition or standard:** Respiratory dysfunction _(our reading, not quoted from the source)_
- **Standard, as the regulation states it:** (5) Has no established medical history or clinical diagnosis of a respiratory dysfunction likely to interfere with his/her ability to control and drive a commercial motor vehicle safely; _(verified: appears in the quote below)_
- **Paragraph:** (b)(5) _(our reading, not quoted from the source)_
- **Regulation section:** 49 CFR 391.41

## What the source says

> (5) Has no established medical history or clinical diagnosis of a respiratory dysfunction likely to interfere with his/her ability to control and drive a commercial motor vehicle safely;

## Source

- https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-391/subpart-E/section-391.41

Last verified: 2026-09-15. Review by: 2027-08-31.
Part of [Medical conditions that disqualify a commercial driver under 49 CFR 391.41](https://referencesource.org/dot-cdl-medical-disqualifying-conditions/).