---
title: Commercial driver’s license (CDL)
description: A state-issued license that authorizes operation of commercial motor vehicles under 49 CFR Part 383.
date: 2026-10-20
lastReviewed: 2026-10-23
canonical: /glossary/commercial-drivers-license
---
A **commercial driver’s license (CDL)** is the state credential defined in [49 CFR Part 383](https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-383). Carriers may accept a valid CDL as equivalent to a § 391.31 road test when the rule allows ([49 CFR 391.33(a)(1)](https://www.ecfr.gov/current/title-49/section-391.33)). Medical certification for CDL holders is reflected on the CDLIS motor vehicle record after June 23, 2025.