# 49 CFR § 392.3: Ill or fatigued operator

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-49-392.3

## Section

- **Citation:** 49 CFR § 392.3
- **Heading:** Ill or fatigued operator
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 49—Transportation > Subtitle B—Other Regulations Relating to Transportation > CHAPTER III—FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER B—FEDERAL MOTOR CARRIER SAFETY REGULATIONS > PART 392—DRIVING OF COMMERCIAL MOTOR VEHICLES > Subpart A—General

## Text

No driver shall operate a commercial motor vehicle, and a motor carrier shall not require or permit a driver to operate a commercial motor vehicle, while the driver's ability or alertness is so impaired, or so likely to become impaired, through fatigue, illness, or any other cause, as to make it unsafe for him/her to begin or continue to operate the commercial motor vehicle. However, in a case of grave emergency where the hazard to occupants of the commercial motor vehicle or other users of the highway would be increased by compliance with this section, the driver may continue to operate the commercial motor vehicle to the nearest place at which that hazard is removed.
[35 FR 7800, May 21, 1970, as amended at 60 FR 38746, July 28, 1995]

## Nearby sections

- [49 CFR § 392.1 § 392.1 Scope of the rules in this part.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.1.md)
- [49 CFR § 392.2 § 392.2 Applicable operating rules.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.2.md)
- [49 CFR § 392.3 § 392.3 Ill or fatigued operator.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.3.md)
- [49 CFR § 392.4 § 392.4 Drugs and other substances.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.4.md)
- [49 CFR § 392.5 § 392.5 Alcohol prohibition.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.5.md)
- [49 CFR § 392.6 § 392.6 Schedules to conform with speed limits.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.6.md)
- [49 CFR § 392.7 § 392.7 Equipment, inspection and use.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.7.md)
- [49 CFR § 392.8 § 392.8 Emergency equipment, inspection and use.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.8.md)
- [49 CFR § 392.9 § 392.9 Inspection of cargo, cargo securement devices and systems.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.9.md)
- [49 CFR § 392.9a § 392.9a Operating authority.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.9a.md)
- [49 CFR § 392.9b § 392.9b Prohibited transportation.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.9b.md)
- [49 CFR § 392.10 § 392.10 Railroad grade crossings; stopping required.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.10.md)
- [49 CFR § 392.11 § 392.11 Railroad grade crossings; slowing down required.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.11.md)
- [49 CFR § 392.12 § 392.12 Highway-rail crossings; safe clearance.](https://www.frixlaw.com/law-library/statutes/ecfr-49-392.12.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-49-392.3. Check the current official text before relying on it. Not legal advice.