FMCSA Drug & Alcohol Clearinghouse: A Driver's Guide

FMCSA Drug & Alcohol Clearinghouse: A Driver's Guide

The FMCSA Drug & Alcohol Clearinghouse is the federal database every CDL driver now lives with for the span of their career. An employer can see it before hiring. Your state DMV can see it before issuing or renewing your CDL. You can see it too — and you should know what's on it.

This guide explains how the Clearinghouse works, what triggers a violation record, how return-to-duty functions, and what to do if a record is wrong. This guide does not and will never cover how to evade drug testing, how to avoid being reported, or how to conceal a violation from an employer. Those behaviors are federal violations with CDL-ending consequences, and the driver-facing consequences of trying are worse than the legitimate path through the system.

Last verified: 2026-04-17 against 49 CFR Part 382 Subpart G and the FMCSA Clearinghouse portal.¹²

Key Takeaways

• The Clearinghouse is a real-time federal database of CDL driver drug and alcohol program violations. Employers query it. State DMVs query it. You can query your own record.²
• Employers must run a full pre-employment query on every CDL hire, plus limited annual queries on current CDL employees.³
• Since November 18, 2024, state DMVs check the Clearinghouse before issuing, renewing, upgrading, or transferring a CDL. A "prohibited" status gets your CDL downgraded.⁴
• Return-to-duty (RTD) is a defined, lawful process. SAP evaluation, negative RTD test, and a follow-up testing plan. There is no shortcut.³
• Errors can be disputed. The Clearinghouse has a petition process under 49 CFR 382.717 to correct inaccurate records.⁵

What the Clearinghouse is

The Drug & Alcohol Clearinghouse is an FMCSA-operated online database that tracks CDL driver drug and alcohol program violations across all employers. It launched January 6, 2020 and is the single source of truth for CMV driver drug-and-alcohol testing history.¹²

Before the Clearinghouse, a driver who tested positive could potentially move to another carrier who had no visibility into the prior violation. The Clearinghouse closes that gap. Today, any carrier running a lawful pre-employment query sees every reportable violation in the driver's federal record.

The regulatory authority sits in 49 CFR Part 382 Subpart G. The portal lives at clearinghouse.fmcsa.dot.gov.¹²

Who it applies to

The Clearinghouse covers every driver who operates a CMV in commerce requiring a CDL or CLP and who is subject to the FMCSA drug and alcohol testing regulations under 49 CFR Part 382.¹

What it tracks

Under 49 CFR 382.705, the Clearinghouse contains records of:¹

• Verified positive DOT drug test results
• Alcohol test results of 0.04 or higher
• Refusals to test (including shy bladder, adulterated specimen, and refusal to comply with directed test procedures)
• Actual knowledge violations — employer's direct knowledge of driver alcohol/drug use while operating or about to operate a CMV
• Return-to-duty (RTD) test results (both negative — which allows RTD — and positive)
• Follow-up test completions (reported by Substance Abuse Professional)
• SAP assignment / completion statuses

Note what it does not track:

• Negative pre-employment or random test results (only positives)
• Non-DOT employer tests (those are outside Clearinghouse scope)
• Historical violations that occurred before January 6, 2020 (with some three-year reporting rules — see "Three-year window" below)

Who reports to the Clearinghouse

Reports come from four types of parties:¹

1. Employers — verified positives, refusals, actual knowledge violations, RTD assignment, duty return.
2. Medical Review Officers (MROs) — verified positive drug tests after the driver has had an opportunity to explain.
3. Substance Abuse Professionals (SAPs) — assessment completion, RTD eligibility, follow-up test plan.
4. Consortium / Third-Party Administrators (C/TPAs) — if the employer uses one, they can report on the employer's behalf.

Drivers do not self-report. Drivers review and can dispute records, but the Clearinghouse record is built from third-party reports.

How employer queries work

Employers conduct two query types:³

Pre-employment query (full)

Before a carrier puts a driver in a safety-sensitive function, they must conduct a full pre-employment query of the Clearinghouse. This is required by 49 CFR 382.701.³

A full query returns the driver's complete Clearinghouse record. It requires explicit driver consent, which the driver gives by registering on the Clearinghouse and granting consent via the portal.

• If the query returns a "prohibited" status, the employer cannot put the driver in a safety-sensitive function until the driver completes RTD.
• If the driver refuses to consent to the full query, the employer cannot hire them into a safety-sensitive function — refusal is treated like prohibited status for hiring purposes.

Annual limited query

Each year an employer must also conduct a limited query on every current CDL driver.³ Limited queries check whether there is any information in the Clearinghouse about the driver — without disclosing the details.

Limited queries require a one-time driver consent, typically a signed form from the driver, retained by the employer.

If the limited query comes back with information, the employer has 24 hours to tell the driver and must then conduct a full query within 24 hours — requiring fresh driver consent specific to that full query.

State DMV queries (new since November 2024)

Starting November 18, 2024, state DMVs must query the Clearinghouse before:⁴

• Issuing, transferring, renewing, or upgrading a CDL or CLP
• Issuing a commercial learner's permit

A driver in prohibited status will see one of the following, depending on state implementation:

• CDL downgrade — the state removes the CDL privilege until the driver completes RTD and the Clearinghouse status changes to "not prohibited."
• Denial — the CDL application is denied until status changes.

This is the biggest single change to the Clearinghouse ecosystem since launch. Drivers who previously continued driving state-by-state despite a prohibited Clearinghouse status now cannot keep the CDL at all. The only lawful path back is completing RTD.

The "prohibited" status — what it means

When a driver has a reported, unresolved drug or alcohol violation, their Clearinghouse status is prohibited. In plain terms: until you complete the return-to-duty process, you legally cannot operate a CMV that requires a CDL in interstate or intrastate commerce subject to Part 382.³

Prohibited status does not mean you lost your CDL (though see the DMV-query section above — since Nov 2024 this increasingly leads to downgrade). It means you cannot be used in a DOT safety-sensitive function. Employers who put a driver in safety-sensitive function while prohibited face FMCSA civil penalties and potential out-of-service orders for the carrier.

The return-to-duty (RTD) process

This is where a driver who has had a violation can return to driving lawfully. The process is defined in 49 CFR Part 40 (Subpart O) and 49 CFR Part 382 Subpart C.⁶¹

Step 1: SAP evaluation

You must see a qualified Substance Abuse Professional (SAP) — a specifically credentialed professional per 49 CFR 40.281.⁶ The SAP performs a face-to-face assessment and recommends a course of education, treatment, or both. The SAP is independent — they are not your employer's clinician.

Step 2: Complete the recommended program

You complete the SAP's recommendations (education, treatment, counseling) as prescribed. You and your SAP stay in contact through this phase.

Step 3: SAP follow-up evaluation

The SAP conducts a follow-up evaluation and determines whether you're ready for a return-to-duty test. If yes, the SAP issues a written follow-up report.

Step 4: Return-to-duty (RTD) test

A prospective or current employer arranges a directly observed return-to-duty drug (and/or alcohol) test. A negative result makes you eligible to return to safety-sensitive work.

Step 5: Follow-up testing plan

Following a negative RTD test and return to duty, you are on a follow-up testing plan set by your SAP:⁶

• Minimum six unannounced tests in the first 12 months of return to safety-sensitive work
• May extend to five years based on SAP judgment
• Your SAP determines the schedule; you and your employer are bound by it

Completion of the follow-up plan is recorded in the Clearinghouse by the SAP.

Three-year window rule

Clearinghouse records generally remain in the system for five years from the date the violation is reported, or until the driver successfully completes RTD and all follow-up testing — whichever is later.¹

For employer queries, a violation stays visible in query results for the standard retention period. Even after a driver completes RTD, the record remains visible until the full retention window closes.

Your rights as a driver

Free access to your own record

Register on the Clearinghouse at clearinghouse.fmcsa.dot.gov and you can view your complete record at any time, free.² Before a job interview, before a DMV visit, before any major CDL action — check your record. Knowing what's there lets you prepare honest answers.

Consent control

Full queries require your affirmative consent on each query. Limited queries require a one-time consent form. You can:

• See every query request an employer has submitted
• Approve or decline a full query request
• Revoke consent for limited queries — but doing so makes you unhireable for safety-sensitive work, because employers can't comply with their annual query obligation without that consent

Dispute process (petition for correction)

If you believe a record is inaccurate, you can file a petition under 49 CFR 382.717 to have it corrected.⁵ Grounds include:

• Identity mix-up (wrong driver listed)
• Reported result inconsistent with your actual test record
• Procedural error in the testing chain (wrong chain of custody, unqualified collector, etc.)
• Records that should have been removed due to SAP / RTD completion

The petition is filed through the Clearinghouse portal. FMCSA reviews and responds. Keep copies of everything you submit.

Dispute scope: what can be corrected, what cannot

The dispute process is for factual accuracy, not for disagreement with a verified positive result you believe the test got wrong.⁵

You can dispute:

• Misidentified driver records
• Records reported after SAP / RTD completion but not updated
• Clerical errors in violation type, date, or employer
• Records reported outside the regulatory window

You generally cannot dispute via Clearinghouse petition:

• A verified positive drug test result itself (that's handled via the MRO process at the time of the test — through your physician explaining legitimate medications, etc., before the MRO verifies)
• A refusal determination you disagree with (similarly, the refusal determination is made by the collector/MRO with employer input at the time — you challenge it then, not later)

The correct time to challenge a positive result is during the MRO verification process — the MRO calls you after a non-negative lab result to ask about legitimate medications before verifying. That conversation is when you produce prescriptions, explain legitimate substance exposure, and make your case. After the MRO verifies positive, that specific result is typically no longer contestable through the Clearinghouse petition route.

What this guide does not cover, and why

This guide will never explain:

• How to dilute, substitute, or adulterate a DOT drug test specimen
• How to avoid being reported to the Clearinghouse
• How to avoid required employer queries
• How to present a past violation as something other than what it is on an application
• How to delay or obstruct the SAP or RTD process to buy driving time
• How to use lab timing or legal loopholes to drive while prohibited
• How to defeat directly observed testing procedures

Each of the above is a federal violation. Each is career-ending for a CDL holder. ResumeGeni's authority with the trucker audience depends on never producing this content — and the practical reality is that attempting any of these approaches leaves you permanently worse off than the lawful RTD path.

What this guide does cover:

• The legitimate dispute process when records are wrong
• The lawful RTD process when a violation has occurred
• How to document prescription medications in advance so that positive lab results can be explained legitimately during MRO verification (and not create violations in the first place)
• How to prepare an honest application narrative when a past violation is on your record

Honest application strategy after a violation

If you've had a Clearinghouse violation and completed RTD, here's what works on a carrier application, stated plainly:⁷

1. Tell the truth. The record is there. Lying about it gets discovered during the employer's pre-employment query and ends the hiring process instantly.
2. Lead with completion. "I completed return-to-duty in [month year] and have been in a follow-up testing program since, with [N] negatives to date." Concrete, dated, verifiable.
3. Own what happened briefly. A sentence or two. No elaborate justifications. No blame-shifting.
4. Show the change. What have you done since that demonstrates the violation is not who you are now?
5. Have references — your SAP, your counselor if applicable, recent employers / colleagues who can speak to your recovery.

Some carriers will not hire drivers with any Clearinghouse violation. Some will, with specific conditions (time since RTD, nature of violation, follow-up testing status). A recruiter honest with you about carrier-specific rules is an asset. One who promises they'll "make it work" despite known policy is not.

Frequently Asked Questions

Q: Do I have to register on the Clearinghouse? A: Yes, for practical purposes. You don't have to register to have a record — your record exists whether you register or not. You do have to register to consent to full queries, which means you have to register to be hireable.

Q: Is there a cost to me as a driver? A: No. Driver registration and self-queries are free. Only employers pay query fees.

Q: Can I see a record before an employer queries? A: Yes — check your own record through the Clearinghouse portal any time.

Q: What counts as a "refusal to test"? A: Per 49 CFR 40.261 (drug) and 40.261 / 40.191 (alcohol), refusal includes: failing to appear for a test, leaving the testing site before the collection, failing to provide a specimen, failing to remain at the site until the process is complete, failing to empty pockets at the collector's direction, possessing or wearing a prosthetic device during the collection, and adulterated / substituted specimens as determined by the lab / MRO.⁶

Q: What happens when I leave a carrier — does my Clearinghouse record stay? A: Yes. The record is tied to you (your CDL / driver's license number), not to any employer. Carriers cannot remove records. New carriers see the same record through their own queries.

Q: How long after RTD will my status say "not prohibited"? A: Once the SAP reports your successful follow-up testing plan completion and the RTD test is negative, the prohibited status clears. Timing varies — typically days to weeks after the final report is submitted.

Q: My employer says I had a "dilute" specimen and need to re-test. Is that a violation? A: A dilute specimen is not automatically a refusal. The MRO determines the outcome per 49 CFR 40.197.⁶ A "negative dilute" may require a re-test under employer policy but is not a Clearinghouse-reportable violation.

Q: I take prescription medication that may show on a drug test. What do I do? A: Tell the MRO during their verification call. Bring prescription documentation. Valid prescriptions for lawful medications (with appropriate safety-sensitive considerations) are not violations. Do this before the MRO verifies — that's when the window is open.

Q: Can I drive again if a carrier just hires me and the record doesn't come up? A: No. The employer is required to query the Clearinghouse — not querying is the carrier's violation, but your prohibited status is your status regardless. Driving in safety-sensitive function while prohibited is itself a violation and compounds the problem.

Q: Will my state CDL be suspended automatically for a Clearinghouse violation? A: Since November 2024, yes — states check the Clearinghouse on CDL actions and will downgrade / deny for prohibited status.⁴ State timing on existing CDLs varies.

Q: My former employer reported a violation I don't think is accurate. What do I do? A: File a petition for correction under 49 CFR 382.717 through the Clearinghouse portal.⁵ Keep detailed records of the test chain of custody, MRO verification, and anything else relevant. The process takes time.

Q: I'm a fleet owner-operator. Do Clearinghouse rules apply to me? A: Yes. Owner-operators subject to Part 382 testing are both the employer and the employee for regulatory purposes. You must participate in a consortium / C/TPA that handles your testing program and queries, per 49 CFR 382.103(b).¹

Q: Is there a private-cause-of-action lawsuit if an employer mishandles my Clearinghouse data? A: Consult an attorney. The Clearinghouse has federal data-handling requirements but private remedies vary by state. Do not rely on general advice for anything with legal stakes.

Sources verified on 2026-04-17

This guide is educational and not legal advice. Regulations change; verify current requirements at clearinghouse.fmcsa.dot.gov and consult a qualified attorney for matters with legal stakes. Report errors to [email protected]; corrections are logged publicly per our editorial policy.