The FMCSA Drug & Alcohol Clearinghouse holds the drug and alcohol violations reported for CDL and CLP drivers, and employers and state licensing agencies check it — whether you know it or not.
That's not meant to alarm you. It's just the reality every commercial driver needs to understand. Since January 6, 2020, the federal government has maintained a centralized database that tracks drug and alcohol violations for safety-sensitive CMV drivers across the country. Your current employer queries it. Your next employer will query it before your first day on the job. And FMCSA can use it for auditing and enforcement.
As an FMCSA-certified medical examiner with 40+ years of experience, I've seen how this database affects real drivers — at renewal time, during pre-employment screening, and when a violation catches someone completely off guard. This guide is written for you, the driver. Not for fleet managers. Not for compliance officers. For you.
What Is the FMCSA Clearinghouse?
The FMCSA Drug & Alcohol Clearinghouse is a congressionally mandated federal database governed by 49 CFR Part 382. It went live on January 6, 2020, and it exists for one core purpose: to prevent drivers with unresolved drug or alcohol violations from simply moving to a new employer and getting back behind the wheel before completing the required return-to-duty process.
Before the Clearinghouse, that happened — more than anyone in the industry likes to admit. A driver would test positive, leave that job, and get hired somewhere else without the new employer ever knowing. The Clearinghouse closed that door permanently.
What Does the DOT Clearinghouse Track?
The FMCSA Clearinghouse doesn't just log positive drug tests. It captures a broader range of violations than most drivers realize. Here's what goes into your record:
- Positive DOT drug tests — for any of the 5 substances on the federal panel (marijuana, cocaine, amphetamines, opiates, PCP)
- Positive DOT alcohol tests — a confirmed BAC of 0.04 or higher while on duty
- Refusals to test — including "shy bladder" situations that can't be medically explained, adulterated or substituted specimens, and outright refusals
- Actual knowledge violations — when an employer directly observes a driver under the influence or in possession of a prohibited substance
- Return-to-Duty (RTD) program status — whether you've started, completed, or are currently in the process
- Follow-up testing completions — documented evidence that your follow-up testing program is on track
Every entry is timestamped, assigned to your CDL record, and visible to authorized parties. Violations remain on your record for five years from the date of the violation — or until the RTD process is fully and properly completed, whichever is later.
Who Can Query the FMCSA Clearinghouse?
Employers
Any employer subject to DOT drug and alcohol testing regulations is required to query the Clearinghouse before hiring a CDL driver. No exceptions. They're also required to run an annual query for every current employee in a safety-sensitive position.
State Licensing Agencies
Since November 18, 2024, your state licensing agency must check the Clearinghouse before it issues, renews, upgrades or transfers a CDL or CLP, and it removes the CDL or CLP privilege from a driver in prohibited status. FMCSA may also use Clearinghouse information for auditing and enforcement.
Medical Examiners
Medical examiners are not among the parties the regulations authorize to access the Clearinghouse. At the CDL physical, I review your health history, including any controlled-substance use under 49 CFR 391.41(b)(12). An unresolved violation matters separately: a driver in that status may not perform safety-sensitive functions until the return-to-duty process is complete.
Driver Consent: Limited vs. Full Queries
Here's something many drivers don't know: there are two types of Clearinghouse queries, and they work differently.
Limited Queries — An employer can run a limited query, which only tells them whether information about you exists, without revealing the details. A limited query needs your written or electronic consent, which can be given outside the Clearinghouse and can cover more than one year.
Full Queries — If a limited query shows a record, the employer must run a full query to see the details. For a full query, your explicit electronic consent is required. You'll receive a notification in your Clearinghouse account and must authorize the release before the employer can proceed.
This means staying registered and checking your account isn't optional if you want to be in control of your own record.
How to Check Your Own FMCSA Clearinghouse Record
Every CDL driver should know what's in their record before an employer asks. Here's how to do it:
- Go to driver.fmcsa.dot.gov
- Create or log in to your Login.gov account
- Register in the Clearinghouse as a driver
- Once registered, you can view your own record at any time — for free
You can also see a history of every query that's been run on your record, including which employers have searched it and when. Checking your own record does not count as a query and does not affect your record in any way.
For a current look at recent regulatory changes affecting the Clearinghouse, including updated guidance, see our post on the FMCSA Drug & Alcohol Clearinghouse 2026 renewal updates.
How a Clearinghouse Violation Affects Your CDL
A violation in the DOT Clearinghouse has immediate and serious consequences. The moment a violation is entered, you are prohibited from operating a commercial motor vehicle in a safety-sensitive function. Full stop.
You cannot legally drive until you complete the Return-to-Duty process — and that completion must be documented in the Clearinghouse before an employer can put you back on the road.
The Return-to-Duty Process, Explained in Plain English
The RTD process exists to give drivers a structured, documented path back to work. It's not designed to punish you — it's designed to make sure you're genuinely ready to return safely.
Here's how it works:
Step 1: SAP Evaluation You must see a DOT-qualified Substance Abuse Professional (SAP). The SAP evaluates your situation and prescribes a specific education and/or treatment program.
Step 2: Follow Your SAP's Recommendations Complete whatever treatment, counseling, or education the SAP prescribes. There's no shortcut here — the SAP determines when you're ready to move forward.
Step 3: Return-to-Duty Test You must pass a directly observed DOT drug and/or alcohol test. This test is separate from your regular random testing pool.
Step 4: Follow-Up Testing Program After you return to duty, you'll be subject to a follow-up testing program — a minimum of 6 unannounced tests in the first 12 months. The SAP determines the full length and scope of this program, which can extend up to 5 years.
Step 5: Clearinghouse Documentation Every step of this process — the SAP evaluation, your program completion, your RTD test, and your follow-up testing — must be recorded in the Clearinghouse. Only when all of this is properly documented can an employer verify you're eligible to drive.
For more on how DOT drug testing works from start to finish, read our complete guide to DOT drug testing for commercial drivers.
Common Misconceptions Drivers Have About the Clearinghouse
"This only applies to drivers at big trucking companies." Wrong. The Clearinghouse applies to all safety-sensitive CMV drivers operating under DOT authority — regardless of company size. Owner-operators are subject to the same rules.
"Marijuana is legal in my state, so a positive test doesn't matter." Wrong. DOT drug testing operates under federal law, not state law. Marijuana remains a prohibited substance under federal standards, regardless of your state's legislation. A positive marijuana test is treated exactly the same as any other DOT drug violation.
"My employer doesn't know about my positive test from a previous job." Wrong. It's in the federal database. Any employer who runs a pre-employment query — which they are required to do — will see that a record exists. Trying to move past a violation without completing RTD doesn't work anymore.
How the Clearinghouse Connects to Your DOT Physical
This is where many drivers get surprised at the exam table.
When I conduct a CDL physical, I review your health history, including any controlled-substance use, but medical examiners do not query the Clearinghouse. An unresolved violation — a positive test or refusal on record without a completed return-to-duty process — keeps a driver off safety-sensitive functions until the process is complete, and since November 18, 2024 the state removes the CDL or CLP privilege.
The medical card and the Clearinghouse record are two separate requirements, and a driver needs both in good standing.
If you have questions about how a clearinghouse record might affect your upcoming exam, that's exactly the kind of conversation to have before you sit down for your physical. To understand exactly what's covered during the physical itself, check out does a DOT physical include a drug test?
Our DOT drug testing services are also available separately; every DOT test is lab-confirmed, and instant-result screens are available for non-DOT testing.
If You Have a Violation: Don't Panic — Get Moving
A Clearinghouse violation doesn't have to be the end of your driving career. Thousands of drivers have completed the RTD process and returned to work with a clean, documented record.
What you should NOT do: ignore it, hope no one notices, or try to drive anyway. The risks — to your livelihood, your CDL, and public safety — are too significant.
What you SHOULD do: connect with a DOT-qualified SAP, follow the process, document everything, and make sure every step is recorded in the Clearinghouse before you get back behind the wheel.
OneCare CDL Is Here to Help You Navigate This
At OneCare CDL in Daytona Beach, FL, I've been helping commercial drivers stay compliant and get back on the road for over 40 years. The FMCSA Clearinghouse is one of the most misunderstood — and most consequential — parts of CDL compliance today.
Whether you're coming in for a CDL physical and aren't sure how your record might affect your exam, or you just need to talk through your options before your next employer runs a query, I'm here to help you understand exactly where you stand and what steps come next.
Have questions about your Clearinghouse record and your CDL? Book a consult with Dr. Jacobsen today. Let's make sure you're ready before you're asked.
