The dot clearinghouse query every employer must track
Hiring and keeping CDL drivers creates more than one compliance clock. The Clearinghouse query requirement follows each covered driver from pre-employment through every rolling annual check.
Written by Inely Baez
Clearinghouse queries at a glance
A dot clearinghouse query is required before a covered CDL driver performs safety-sensitive work for an employer, and then at least once per year on a rolling driver-by-driver basis. The practical job is to track query type, consent, results, and follow-up before a driver is dispatched.
I look at Clearinghouse queries as an operations process. The rule is not difficult to understand, but it is easy to miss when hiring, dispatch, testing, and records are handled in separate places.
The fix is a system: define who is covered, run the right query at the right time, keep consent where it can be found, and connect the result to your drug and alcohol program.
The full briefing, read aloud
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Key takeaways
Queries follow the driver
Employers must run a pre-employment full query before a covered driver performs safety-sensitive work, and must query each covered driver at least once per year after that.
The annual clock rolls
Annual queries are not one universal December task. The deadline is rolling and driver-specific, based on the last query date.
Limited and full are different
A limited query tells you whether Clearinghouse information exists. A full query releases detailed violation and return-to-duty information with driver consent in the Clearinghouse.
Consent needs control
General consent for limited queries may cover more than one year, but it must specify the timeframe and be retained for 3 years from the last query.
Queries are not testing
Clearinghouse queries are part of drug and alcohol compliance, but they do not replace pre-employment, random, post-accident, reasonable suspicion, return-to-duty, or follow-up testing.
In this articleContents
Who needs to manage a dot clearinghouse query?
A trucking employer needs to manage Clearinghouse queries when it employs or uses drivers who are subject to FMCSA drug and alcohol testing under 49 CFR Part 382.
In plain terms, that usually means drivers who need a C D L or C L P to operate a commercial motor vehicle in commerce. Under 49 CFR 383.5, that can include certain combination vehicles at 26,001 pounds or more, heavy straight vehicles at 26,001 pounds or more, vehicles designed for 16 or more passengers including the driver, and vehicles of any size used to transport placarded hazardous materials.
The rule is not limited to full-time company drivers. Part 382 includes full-time, casual, intermittent, leased, and independent owner-operator contractors while they operate a commercial motor vehicle.
Owner-operators count, too
If you employ yourself as a driver, Part 382 treats you as both the employer and the driver. FMCSA also says an owner-operator must designate a consortium or third-party administrator in the Clearinghouse as part of registration.
For a broader starting point, see our FMCSA Clearinghouse beginner's guide. This article focuses on the query process employers need to track after they know they are covered.
When is a Clearinghouse query required?
A Clearinghouse query is required before a covered driver starts safety-sensitive work for you, and at least once per year while that driver remains subject to Part 382.
A pre-employment query must be a full query. You need it before the driver performs a safety-sensitive function, which can include driving, inspecting equipment, being ready for dispatch, loading or unloading, or attending a disabled vehicle.
Adding a driver to your insurance policy does not replace the Clearinghouse query. If the driver is already being added to insurance, confirm the pre-employment full query is done first.
Annual queries work differently. FMCSA says the annual requirement is rolling and driver-by-driver, based on the last query performed. If one group of drivers was queried in March and another in July, those drivers do not share the same next due date.
Do not treat the annual query like a single year-end filing. Also do not confuse it with random testing. Queries check Clearinghouse records; random testing is a separate drug and alcohol testing obligation.
What is the difference between a limited and full query?
A limited query answers one question: whether Clearinghouse information exists. A full query releases detailed violation and return-to-duty information to the employer when the driver gives specific electronic consent.
| Query type | When used | Consent |
|---|---|---|
| Limited query | Annual checks on current drivers, or other periodic checks when you only need to know whether information exists | General driver consent obtained outside the Clearinghouse; it may cover more than one year if the timeframe is specified |
| Full query | All pre-employment checks, follow-up after a limited query shows information exists, or other checks where details are needed | Specific electronic consent from the driver inside the Clearinghouse for each full query |
| Follow-up full query | Required when a limited query shows Clearinghouse information exists | Specific electronic consent; the employer must complete the full query within 24 hours of the limited query |
If a limited query shows that information exists, you do not have the details yet. The employer must run a full query within 24 hours. If that does not happen, the driver cannot continue safety-sensitive work until the full query is completed and confirms no prohibition.
A driver does not have to register in the Clearinghouse just to be covered by the rules. But the driver must be registered and logged in to give electronic consent for a full query, including every pre-employment query.
How should employers organize query records and consent?
Your query system should show who was checked, when they were checked, what type of query was run, what consent supported it, and what follow-up is still open.
Step 1: Create a driver query log
Keep a management log outside the Clearinghouse that lists every covered driver, hire date, last query date, next annual query due date, query type, consent status, result category, and follow-up owner. Records in the Clearinghouse matter, but your internal log is what keeps deadlines visible.
Step 2: Store limited consent
Limited consent is obtained outside the Clearinghouse. It can be paper or electronic, and FMCSA says it may cover more than one year if it specifies the timeframe. Store it where you can produce it quickly.
Step 3: Confirm full-query consent
Full-query consent happens inside the Clearinghouse. Build this into hiring so a driver is not scheduled for safety-sensitive work before the full query is complete.
Step 4: Track record retention
FMCSA says employers must retain each query record and the response for 3 years. As of January 6, 2023, a registered employer satisfies that 3-year query-record requirement by maintaining an active Clearinghouse registration, but you still need a management log to run the process.
Consent is separate. Under 49 CFR 382.703, the employer must retain the driver's written or electronic consent for 3 years from the date of the last query.
Who should own the Clearinghouse query process?
One person should own the query calendar, even if a C/TPA performs queries on your behalf.
FMCSA allows employers to designate a consortium or third-party administrator to conduct queries or report violations, and owner-operators must designate one. That does not remove the need for an internal owner who knows whether a driver can be dispatched.
Assign responsibility by event, not by memory: recruiting owns pre-hire readiness, safety or compliance owns the annual query calendar, the designated employer representative owns removal-from-duty decisions, and management owns making sure the program is funded and active.
The owner should review three lists every month: new driver candidates awaiting full queries, current drivers with annual queries due in the next 30 to 60 days, and any limited queries that require full-query follow-up.
How do queries fit into the drug and alcohol compliance program?
Clearinghouse queries are one control inside the larger DOT drug and alcohol program, not a replacement for the program.
A compliant program also includes the required testing events, written policy materials for drivers, supervisor training where required, record retention, violation handling, return-to-duty coordination, and follow-up testing when a driver returns after a violation.
This is why query management should connect with your substance abuse testing program and your drug screen compliance process. The same driver roster that feeds your query calendar should also support testing records and audit readiness.
When the process is organized, you know three things before a driver moves a truck: the pre-employment full query is complete, the annual query clock is visible, and any consent or follow-up issue has a named owner.
How Simplex helps with Clearinghouse query compliance
A query calendar works best when it is tied to your hiring, testing, records, and driver file process.
Drug and alcohol program support
Simplex supports trucking companies with substance abuse testing, including random pool coordination, testing events, records, and Clearinghouse coordination.
Testing and records organization
Our drug screen compliance support helps fleets arrange tests, manage random testing needs, and keep records organized for audits.
Broader compliance alignment
Our DOT safety compliance team helps connect driver qualification, drug and alcohol compliance, and audit preparation into one operating process.
Frequently asked questions
Is a DOT Clearinghouse query required before hiring a CDL driver?+
Can a limited query satisfy the annual Clearinghouse query requirement?+
Is the annual Clearinghouse query due at the end of the calendar year?+
Does a Clearinghouse query replace random drug testing?+
What happens if a driver refuses consent?+
Where this information comes from
The requirements below come from federal regulation, FMCSA Clearinghouse guidance, and Simplex service pages, checked on November 3, 2026.
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1
eCFR — 49 CFR 382.701
Pre-employment full query, annual query, limited query, 24-hour follow-up full query, prohibitions, and 3-year query record rule.
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2
eCFR — 49 CFR 382.703
Written or electronic consent, full-query electronic consent, consent retention, and refusal consequences.
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3
eCFR — 49 CFR 382.103
Who Part 382 applies to, including CDL-regulated CMV drivers and owner-operators.
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4
eCFR — 49 CFR 383.5
Commercial motor vehicle, CDL driver, employer, and safety-sensitive function definitions used to determine coverage.
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5
FMCSA Clearinghouse — Queries and Consent Requests FAQ
FMCSA explanations of limited and full queries, driver registration, consent, C/TPAs, owner-operators, and covered non-CDL drivers.
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6
FMCSA Clearinghouse — MCSAP Webinar Q&A
FMCSA explanation that annual queries are rolling and driver-by-driver, not one universal deadline.
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7
Simplex Group — Substance Abuse Testing
Simplex service page for DOT substance abuse testing program support.
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8
Simplex Group — Drug Screen Compliance
Simplex service page for DOT drug screen compliance support and record organization.
Written by
Inely Baez
Chief Operating Officer, Simplex Group
Chief Operating Officer at Simplex Group, with nearly eight years at the company leading operational strategy and execution across compliance, technology, logistics, and performance systems. She is a Certified Public Accountant with a background spanning operations and finance, including leadership roles within Simplex's Freight 4 U division and Velox Transport Solutions. Her work focuses on building scalable, disciplined systems that support long-term performance and growth.
Published · Updated
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Make the query routine before it becomes a finding
A missed query is usually not a knowledge problem. It is a system problem: no owner, no date, no consent file, or no check before dispatch.
If you want help organizing Clearinghouse queries, consent records, and testing program responsibilities, talk to our team.