Do CDL drivers have to register for the Clearinghouse?

Registration is not required for every driver, but in practice most drivers need to register. A prospective employer's pre-employment full query requires your electronic consent, which you can only give through a Clearinghouse account. Registering is free and also lets you see your own record.

How long does a violation stay in the Clearinghouse?

A drug or alcohol violation stays in the Clearinghouse for five years from the date of the violation determination, or until you complete the return-to-duty process and follow-up testing plan, whichever is later. Finishing your follow-up testing early does not remove the record before five years have passed.

Will I lose my CDL if I fail a DOT drug test?

Since November 18, 2024, state licensing agencies must remove commercial driving privileges from drivers in prohibited status in the Clearinghouse. That means your CDL is downgraded until you complete the required steps and a negative return-to-duty test is reported. Your privileges can then be reinstated through your state.

Can I dispute information in the Clearinghouse?

Yes, drivers can petition FMCSA to correct information that was reported inaccurately, such as the wrong driver or a clerical error. You generally cannot use the Clearinghouse petition process to challenge whether a verified test result was valid. Check the Clearinghouse website for current petition procedures.

Do owner-operators need to use the Clearinghouse?

Yes. An owner-operator who employs themselves must register as an employer, conduct required queries on themselves, and designate a consortium or third-party administrator to report violations on their behalf.

FMCSA Clearinghouse Guide for CDL Drivers and Carriers

The FMCSA Drug and Alcohol Clearinghouse is a federal online database that tracks drug and alcohol violations for CDL and CLP holders. Carriers must run a full query before hiring a driver and at least a limited query on every CDL driver once a year, and since November 2024, drivers with an unresolved violation lose their commercial driving privileges at the state level. Here is how it works for drivers and carriers.

This post is general information, not legal advice. Rules can change, so confirm current requirements with FMCSA and 49 CFR Part 382.

Key takeaways

The Clearinghouse has been in effect since January 6, 2020, and applies to drivers performing safety-sensitive functions in CDL-required vehicles.
Carriers need a full query (with the driver's electronic consent) before hiring, and a limited query or full query on every CDL driver at least once a year.
A limited query that shows information exists must be followed by a full query within 24 hours, or the driver must be pulled from safety-sensitive work.
Violations stay in the database for 5 years or until return-to-duty and follow-up testing are complete, whichever is later.
Under Clearinghouse-II, effective November 18, 2024, states must downgrade the CDL or CLP of drivers in prohibited status.
Owner-operators must register as employers and designate a consortium or third-party administrator (C/TPA).

What is the FMCSA Drug and Alcohol Clearinghouse?

Before the Clearinghouse, a driver who failed a drug test at one carrier could sometimes apply at another carrier and leave that history off the application. Previous-employer checks relied on phone calls and faxes, and small carriers often never got a response.

The Clearinghouse closed that gap. It is a secure online database run by FMCSA that records:

Verified positive, adulterated, or substituted drug test results
Alcohol test results with a concentration of 0.04 or higher
Refusals to test
Actual knowledge of drug or alcohol use (for example, an employer witnessing use)
Negative return-to-duty test results
Completion of the follow-up testing plan

Who reports what depends on the violation. Medical review officers report verified drug test results and certain refusals. Employers report alcohol violations, actual knowledge, some refusals, negative return-to-duty results, and follow-up plan completion. Substance abuse professionals (SAPs) report when a driver has been assessed and when they are eligible for return-to-duty testing.

The rules themselves are in 49 CFR Part 382, and the database lives at the official FMCSA Clearinghouse website.

Clearinghouse queries: full vs. limited

There are two types of queries, and carriers need to understand both.

	Full query	Limited query
When it is required	Pre-employment, and as a follow-up when a limited query shows information	At least once per year for every employed CDL driver
What it shows	Detailed violation records, if any	Only whether information exists
Consent type	Electronic consent inside the Clearinghouse	General written consent, collected outside the Clearinghouse
Can consent cover multiple queries?	No, one consent per query	Yes, one consent can cover multiple years
If the driver refuses consent	Cannot perform safety-sensitive functions	Cannot perform safety-sensitive functions

Pre-employment full query

Before a new driver performs any safety-sensitive function, the hiring carrier must run a full query. The driver has to log in to their own Clearinghouse account and approve it. This is the most common reason drivers end up registering, and it is also a common hiring delay. If a candidate has never set up an account, their start date can slip by a day or more.

A pre-employment query does not replace a pre-employment drug test. Under Part 382, carriers still need a verified negative DOT drug test result before a new driver operates a CMV, unless a specific exception applies.

Annual limited query

Carriers must query every CDL driver they employ at least once every 12 months. Most use a limited query because it only needs a general written consent form, which can be signed once and cover the length of employment.

If the limited query shows that information exists, the carrier must run a full query within 24 hours. If the driver does not grant electronic consent in that time, the carrier must remove them from safety-sensitive functions until the full query is completed.

Previous employer checks

Since January 6, 2023, FMCSA-regulated employers can generally satisfy the drug and alcohol portion of the three-year previous employer check through the Clearinghouse full query alone. There is an important exception: if a driver worked for an employer regulated by a different DOT agency (for example, an aviation or rail employer), you still need to request that history directly. Carriers still need to complete the rest of the safety performance history investigation under Part 391.

Query costs and plans

Queries are purchased in advance through query plans on the Clearinghouse website. FMCSA has kept the per-query fee low, but carriers should check the current fee schedule on the Clearinghouse site rather than rely on a number from a blog post.

As a driver, your consent is the key that unlocks your record for employers. A few things to keep in mind:

Register early. Create your Clearinghouse account before you start applying. It makes pre-employment queries fast and shows recruiters you are ready to go.
Keep your email current. You receive notifications when information is added, changed, or removed from your record.
Check your own record. You can view your Clearinghouse record for free at any time.
Refusing consent has consequences. A carrier cannot put you in a truck if you decline a required query.

If you are early in your career, pair this with our guide on how to get your CDL step by step, since Clearinghouse rules apply to commercial learner's permit holders too, not just full CDL holders.

The return-to-duty process

A driver with a drug or alcohol violation is prohibited from performing safety-sensitive functions for any DOT-regulated employer until they complete the return-to-duty (RTD) process. The steps are set by 49 CFR Part 40.

Removal from safety-sensitive duty. This happens immediately after the violation.
SAP evaluation. The driver meets with a DOT-qualified substance abuse professional. The driver can find one through the Clearinghouse and must designate them there.
Education or treatment. The SAP recommends a program and the driver completes it.
SAP follow-up evaluation. The SAP confirms the driver complied and reports that the driver is eligible for RTD testing.
Return-to-duty test. The driver takes a test that must come back negative. RTD drug tests are directly observed. The employer reports the negative result.
Follow-up testing. The SAP sets a follow-up plan with at least 6 unannounced tests in the first 12 months back on duty. The plan can extend up to 60 months, and it follows the driver if they change employers.

Once the negative RTD result is reported, the driver's Clearinghouse status changes from prohibited to not prohibited, even though follow-up testing continues. The violation record itself stays visible to employers until the 5-year period or the follow-up plan is finished, whichever is later.

Can you drive for a new carrier during follow-up testing?

Yes, as long as your RTD test has been reported. Your new employer will see the violation and your follow-up plan on the full query, and they become responsible for completing the remaining follow-up tests. Some carriers will not hire drivers with an open follow-up plan, while others will. Being upfront with recruiters saves everyone time.

Clearinghouse-II: state CDL downgrades

The second phase of the Clearinghouse rule, often called Clearinghouse-II, took effect on November 18, 2024. It gave the Clearinghouse real teeth at the licensing level.

What changed in November 2024

State driver licensing agencies (SDLAs) must check the Clearinghouse before issuing, renewing, upgrading, or transferring a CDL or CLP.
Drivers in prohibited status lose their commercial driving privileges. When FMCSA notifies a state that a driver is prohibited, the state must remove the CDL or CLP privilege from the license, which generally happens within 60 days of notification.
The downgrade is reversible. Once the driver completes the RTD requirements and their status changes to not prohibited, they can work with their state to reinstate the commercial privilege. Exact reinstatement procedures vary by state.

What this means in practice

Before Clearinghouse-II, a driver in prohibited status still technically held a valid CDL, which created a loophole with employers that were not querying properly. Now the license itself reflects the prohibition. For drivers, the lesson is simple: an unresolved violation does not just stop you from working for one carrier, it takes your commercial license off the table everywhere until you complete RTD.

Employer obligations checklist

If you run a fleet, these are the core Clearinghouse responsibilities under Part 382:

Register your company in the Clearinghouse and purchase a query plan.
Run a full pre-employment query on every new CDL driver before they perform safety-sensitive functions.
Run at least a limited query annually on every CDL driver you employ, with signed general consent on file.
Follow up with a full query within 24 hours when a limited query shows information.
Report violations you are responsible for, including alcohol results of 0.04 or higher, employer-determined refusals, and actual knowledge.
Report negative RTD results and follow-up plan completion for your drivers.
Retain consent forms and query records for at least three years.
Owner-operators must designate a C/TPA to handle reporting, since you cannot report violations on yourself.
Assign a designee if a third party handles queries for you, and keep that access current when staff changes.

Clearinghouse gaps also tend to surface during audits, so build these steps into your hiring workflow instead of treating them as paperwork. If you are streamlining hiring at a small fleet, our guide to CDL driver recruiting strategies for small fleets covers how to keep compliance steps from slowing down good candidates.

Common Clearinghouse mistakes to avoid

Letting drivers operate before the pre-employment query clears. This is a straightforward violation that can show up in an audit.
Missing the annual query date. Set a calendar reminder per driver or run all annual queries in the same month.
Forgetting the 24-hour follow-up. A limited query hit starts a clock.
Assuming the Clearinghouse covers all DOT employers. It does not include records from other DOT agencies.
Owner-operators skipping registration because they only employ themselves.
Drivers ignoring notification emails about changes to their record.

Finding work with a clean start

A clean Clearinghouse record, clean logs, and a registered account put drivers in a strong spot with recruiters. Pair that with knowing what you want in a job, and you can move quickly when the right offer shows up. See our guide to the best trucking jobs for new CDL drivers if you are just getting started.

Drivers can search CDL jobs on NovaLinx by home time, route type, and pay, or download the app to apply from the road. Carriers that want a faster way to reach qualified drivers can start recruiting on NovaLinx.