---
title: FMCSA
description: The Federal Motor Carrier Safety Administration — the U.S. agency that enforces CMV safety regulations.
date: 2026-10-20
lastReviewed: 2026-10-23
canonical: /glossary/fmcsa
---
The **Federal Motor Carrier Safety Administration (FMCSA)** administers the Federal Motor Carrier Safety Regulations, including Part 391 driver qualification and Part 382 drug and alcohol testing. FMCSA and state partners may inspect motor carrier records maintained under those rules.