---
title: CDLIS (Commercial Driver’s License Information System)
description: The system of state motor vehicle records carriers use to verify CDL medical certification status.
date: 2026-10-20
lastReviewed: 2026-10-23
canonical: /glossary/cdlis
---
**CDLIS** records come from the driver’s current licensing state. For CDL holders, carriers satisfy medical certification file requirements by obtaining the CDLIS motor vehicle record that shows medical status ([49 CFR 391.51(b)(6)(ii)](https://www.ecfr.gov/current/title-49/section-391.51), [391.23(m)(2)](https://www.ecfr.gov/current/title-49/section-391.23)).