---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtB/chIII/subchB/part391"
level: "part"
label: "Part 391"
heading: "Qualifications of Drivers and Longer Combination Vehicle (lcv) Driver Instructors"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtB-chIII-subchB-part391"
sections_count: 30
---

# Part 391 — Qualifications of Drivers and Longer Combination Vehicle (lcv) Driver Instructors

Title 49 C.F.R. — 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

## Contents

- [Subpart A — General](/cfr/49/subtB-chIII-subchB-part391-subpartA.md)
- [Subpart B — Qualification and Disqualification of Drivers](/cfr/49/subtB-chIII-subchB-part391-subpartB.md)
- [Subpart C — Background and Character](/cfr/49/subtB-chIII-subchB-part391-subpartC.md)
- [Subpart D — Tests](/cfr/49/subtB-chIII-subchB-part391-subpartD.md)
- [Subpart E — Physical Qualifications and Examinations](/cfr/49/subtB-chIII-subchB-part391-subpartE.md)
- [Subpart F — Files and Records](/cfr/49/subtB-chIII-subchB-part391-subpartF.md)
- [Subpart G — Limited Exemptions](/cfr/49/subtB-chIII-subchB-part391-subpartG.md)