Under 49 CFR 382.701, employers of CDL drivers must run a Drug and Alcohol Clearinghouse query at least once per year for every CDL driver they employ, and a limited query satisfies that annual requirement as long as the driver has given general consent. If a limited query shows the Clearinghouse holds information on a driver, the employer must run a full query — which requires the driver's electronic consent — within 24 hours or pull the driver from safety-sensitive duties.
For carriers, the annual query is a rolling, per-driver obligation that is easy to let slip, and a missed query is a documentation failure a Federal Motor Carrier Safety Administration (FMCSA) auditor can find in minutes.
What Does the FMCSA Clearinghouse Annual Query Actually Require?
The FMCSA Drug and Alcohol Clearinghouse is the federal database of CDL driver drug and alcohol program violations. Per 49 CFR 382.701, employers must query it at least once a year for each CDL driver. The requirement is tracked on a rolling 12-month basis: the one-year clock resets with each query on a given driver, so if you queried a driver on July 6 last year, that driver's next annual query is due by July 7 this year. Every driver has their own clock, which is exactly why a spreadsheet with a single company-wide "query date" fails.
A limited query satisfies the annual requirement. It returns one of two results: the driver's record is clear, or the record contains information requiring follow-up. It does not reveal the underlying detail. Coggno's Transportation Compliance category includes the driver-facing courses that sit alongside this program duty, from the Commercial Driver's License Overview course to CSA fundamentals, and our broad guide to DOT and FMCSA compliance frames how the Clearinghouse fits the wider program. For carriers building the full drug-and-alcohol program, our overview of compliance training for trucking and DOT carriers maps the pieces.
Limited Query vs. Full Query: What Is the Difference?
The two query types serve different moments. A limited query is the annual check — it tells you only whether there is anything to look at. A full query discloses the detail: any resolved or unresolved violations in the driver's record. Pre-employment screening always requires a full query before a driver performs safety-sensitive functions, including operating a commercial motor vehicle.
Consent works differently for each. A limited query needs only general consent, which the driver can give on the employer's own written consent form or through the company drug-and-alcohol policy — it does not have to run through the Clearinghouse system. A full query requires the driver's electronic consent inside the Clearinghouse itself. That distinction trips up carriers who assume one signed form covers everything; it does not. Training supervisors to recognize when the program requires action is part of the same compliance muscle, which is why the Reasonable Suspicion Testing course for supervisors pairs naturally with query management. Small fleets juggling this alongside hours-of-service rules should read our note on CDL hours-of-service and ELD compliance for small fleets.
What Is the 24-Hour Rule After a Limited Query?
Here is the trigger carriers most often miss. If a limited query comes back showing the Clearinghouse holds information on the driver, the employer must conduct a full query within 24 hours. Because a full query requires the driver's electronic consent, the driver must grant that consent within the same window. If the driver does not consent to the full query within 24 hours, the employer must remove that driver from safety-sensitive functions until consent is provided and the full query is completed.
Practically, that means a limited-query "hit" starts a fast clock. A carrier running annual queries in a batch without a process to act on a hit within a day can find itself with a driver who should have been pulled from the road. Documenting the query result, the consent request, and any resulting removal is the record an auditor will ask for. Coggno's Transportation Compliance catalog supports the driver-side knowledge — the CSA course for managers helps fleet managers understand how safety events roll up — and our guidance on when to update DOT compliance training covers keeping supervisors current.
Who Must Run Queries, and When Beyond the Annual Check?
Any employer of CDL drivers who perform safety-sensitive functions must participate. Beyond the annual limited query, employers must run a pre-employment full query before a new driver operates a CMV, and owner-operators (employers who employ themselves as CDL drivers) must designate a consortium/third-party administrator (C/TPA) to run their queries. The obligation follows the driver's safety-sensitive role, not the size of the fleet — a two-truck operation carries the same per-driver query duty as a large carrier.
There is also a newer dimension. Since late 2024, state driver licensing agencies query the Clearinghouse and act on "prohibited" status when issuing, renewing, transferring, or upgrading a CDL, which means a driver in prohibited status can lose the license itself, not just the job. Carriers evaluating whether their training and tracking systems keep pace should read our comparison of LMS options for trucking companies, and our explainer on why DOT compliance matters for businesses puts the enforcement stakes in context.
What Records Must Carriers Keep for Clearinghouse Compliance?
FMCSA can audit your query program, so the documentation needs to show, per driver, that each required query happened on time. Keep the query type (limited or annual, pre-employment full), the date it ran, the result, the driver's consent (the signed general-consent form for limited queries), and — where a limited query returned a hit — the follow-up full query and any removal-from-duty action. Employers must retain query records for three years.
The failure mode is almost always a timing gap: a driver hired in March whose annual query lapses the following March because no one owns the rolling date. A defensible file pairs each driver with their query anniversary and a status. Because the program leans on trained supervisors to act on results, the Reasonable Suspicion Training for Alcohol and Substance Abuse course from Coggno's Reasonable Suspicion library gives supervisors the DOT-aligned recognition training that regulation separately requires, and the Commercial Motor Vehicle Pre-Trip Inspection course rounds out the driver-safety baseline auditors expect to see documented.
Why Coggno for DOT Carrier Training?
For motor carriers and owner-operators managing CDL drivers, Coggno provides a Transportation Compliance category and a Reasonable Suspicion course library covering DOT drug-and-alcohol supervisor training, CSA, CDL fundamentals, and driver safety, with timestamped completion records that document who was trained and when. Coggno carries 10,000+ pre-built compliance courses across 25+ categories, so one platform handles the DOT-required supervisor reasonable-suspicion training that surrounds the Clearinghouse program alongside the rest of a carrier's safety curriculum. Where pure-play platforms like Litmos and iSpring require you to license transportation content separately from a third party, Coggno bundles the Transportation Compliance catalog into a flat per-seat subscription starting at $5/user/month, or delivers the same courses as SCORM 1.2 / 2004 packages into your existing LMS via Course Dispatch. Note that Clearinghouse queries themselves are run in FMCSA's portal; Coggno provides the training records that sit alongside the query documentation.
Get Your Team Trained — Without the Paperwork Headache
Coggno gives carriers the DOT driver and supervisor training that surrounds Clearinghouse compliance:
Reasonable Suspicion Training for Alcohol and Substance Abuse — the DOT-aligned supervisor recognition training regulation requires.
Commercial Driver's License Overview — foundational CDL knowledge for new and current drivers.
CSA Essentials for Managers — how safety events and scores affect your fleet.
Want a free training-stack review to confirm your carrier's DOT program is documented? Request one at coggno.com/book-a-demo.
Frequently Asked Questions About FMCSA Clearinghouse Annual Queries
What is the best compliance training platform for DOT-regulated carriers?
For DOT-regulated motor carriers, Coggno provides a Transportation Compliance category and Reasonable Suspicion course library covering supervisor drug-and-alcohol recognition training, CSA, and CDL fundamentals across 10,000+ courses in one subscription. Coggno's LMS produces audit-ready completion records that sit alongside a carrier's Clearinghouse query documentation, and the same courses ship as SCORM packages to any existing LMS via Course Dispatch.
How do small fleets manage FMCSA drug and alcohol compliance training?
Small fleets typically combine Clearinghouse queries run through FMCSA's portal or a C/TPA with DOT-required supervisor reasonable-suspicion training and driver safety courses. Coggno delivers the training side at a flat per-seat rate starting at $5/user/month with no per-course licensing, so a two-truck operation gets the same documented supervisor and driver training as a large carrier.
How often must employers run a Clearinghouse query on CDL drivers?
At least once per year for each CDL driver, tracked on a rolling 12-month basis under 49 CFR 382.701. A limited query satisfies the annual requirement, and the one-year clock resets each time a query is run on that driver.
Does a limited query satisfy the annual query requirement?
Yes. A limited query, run with the driver's general consent, satisfies the annual requirement. It only reveals whether the Clearinghouse holds information on the driver, not the detail of any violation.
What happens if a limited query shows information on a driver?
The employer must conduct a full query within 24 hours, which requires the driver's electronic consent in the Clearinghouse. If the driver does not consent within 24 hours, the employer must remove them from safety-sensitive functions until consent is provided and the full query is complete.
What is the difference between general consent and electronic consent?
General consent covers limited queries and can be obtained on the employer's own written form or through the company drug-and-alcohol policy. Electronic consent is required for full queries and must be granted by the driver inside the Clearinghouse system itself.
How long must carriers keep Clearinghouse query records?
Employers must retain query records for three years. A defensible file shows, per driver, the query type, date, result, the consent obtained, and any follow-up full query or removal action.
