Resource Guide
FMCSA Explained: Regulations & Compliance
General information for motor carriers · Not legal advice.
The Federal Motor Carrier Safety Administration (FMCSA) is the U.S. Department of Transportation agency that regulates commercial motor vehicle safety. If you run trucks or buses in interstate commerce, the FMCSA sets the rules you must follow — and tracks how well you follow them.
What the FMCSA Does
- Issues USDOT numbers and operating authority (MC numbers)
- Sets Hours of Service (HOS) limits for drivers
- Establishes CDL standards and drug & alcohol testing rules (and the Clearinghouse)
- Regulates vehicle maintenance, inspections, and hazardous materials
- Assigns safety ratings and runs the CSA program
CSA: How the FMCSA Scores You
Compliance, Safety, Accountability (CSA) uses roadside inspection and crash data to score carriers across safety categories (BASICs) — such as unsafe driving, HOS compliance, and vehicle maintenance. High scores can trigger interventions, audits, and enforcement.
New Entrants
New interstate carriers go through a monitoring period and a New Entrant Safety Audit that reviews your records and safety management systems. Passing it is essential to keep your authority active.
How Consulics Helps
We help you register with the FMCSA, prepare for audits, keep your records in order, and stay compliant so you can focus on running your business.
Frequently Asked Questions
What is the FMCSA?
The Federal Motor Carrier Safety Administration (FMCSA) is the agency within the U.S. Department of Transportation responsible for regulating and overseeing commercial motor vehicle safety. It issues USDOT and MC numbers, sets safety rules, and monitors carrier compliance.
What does the FMCSA regulate?
The FMCSA sets and enforces rules on hours of service, driver qualifications and CDLs, drug and alcohol testing, vehicle maintenance and inspections, hazardous materials, and carrier registration. It also assigns safety ratings.
What is a CSA score?
Compliance, Safety, Accountability (CSA) is the FMCSA safety program. It scores carriers across BASIC categories (such as unsafe driving, hours-of-service compliance, vehicle maintenance, and others) using roadside inspection and crash data to prioritize enforcement.
What is the New Entrant Safety Audit?
New interstate carriers are monitored for an initial period and must pass a New Entrant Safety Audit, which reviews your safety management systems and records to confirm you can operate safely and in compliance.
Need help staying FMCSA-compliant?
From registration to audit prep, Consulics has you covered.