Since January 2020, every employer of CDL drivers has had to check the FMCSA Drug and Alcohol Clearinghouse before hiring and at least once a year, and to report violations to it. Since November 2024, the stakes have been higher: a driver in prohibited status loses the commercial privileges on their license, not just the job. This guide explains who does what in the Clearinghouse, how the two query types work, how to schedule annual queries, the three-day reporting deadline, the return-to-duty process and record keeping. It ends with a checklist you can use as a template. To see how FleetRabbit keeps driver and truck records together, book a short demo with our team.
FMCSA Clearinghouse · employer guide
One query result decides whether a driver can take the truck out today
Not prohibited, the driver works. Prohibited, the driver is off safety-sensitive work at once and, since November 2024, loses CDL privileges until return to duty is complete.
Query result
Representative · sample data
Driver
CDL holder, tractor-trailer
Not prohibited: no information found
If a record exists: full query within 24 hours
Over 200,000 drivers are in prohibited status, and most haven’t started the way back
As of 2 January 2026, the Clearinghouse held violations for 328,431 CDL and CLP holders, according to figures reported by FreightWaves. 202,345 of them were in prohibited status, and 159,226, about 79% of the prohibited group, had not started the return-to-duty process. Marijuana accounted for roughly 60% of positive drug test violations.
328,431
CDL and CLP holders with at least one violation on record
202,345
in prohibited status: they may not drive a commercial vehicle
159,226
prohibited and have not started the return-to-duty process
Source: FMCSA Clearinghouse data as of 2 January 2026, reported by FreightWaves, March 2026.
For a fleet, that means a real chance that a driver applicant is in prohibited status, and a real cost if the query is skipped.
Who does what in the Clearinghouse: six roles and their obligations
The Clearinghouse works because several parties report into it. Employers are only one of them, but they carry the query obligation.
| Role | Queries | Reports | Note |
|---|
| Employer | Full query before hiring; at least one query a year per driver | Alcohol 0.04+, refusals, actual knowledge, RTD results | Needs the driver’s consent |
| Driver | Gives electronic consent for full queries | Nothing; can view own record free | Registers to give consent |
| Medical review officer | — | Verified positive drug tests and refusals | Reports within two business days |
| Substance abuse professional | — | Initial assessment and eligibility for RTD testing | Starts the return-to-duty record |
| C/TPA | Can run queries for employers who designate it | Can report for employers who designate it | Owner-operators must designate one |
| State licensing agency | Checks status when issuing or renewing a CDL | Removes CDL privileges from prohibited drivers | Since 18 November 2024 |
Limited or full: how the two query types work, and when each is required
A limited query tells you only whether a record exists. A full query shows the details. Each needs a different kind of consent, and each costs $1.25.
Annual check
Run a limited query
General consent from the driver, on paper, can cover more than one year.
No
Driver continues. Save the result.
Yes
Full query within 24 hours, with electronic consent, or remove the driver from safety-sensitive work.
Before hiring, skip the limited query: a full query with the driver’s electronic consent is required before the driver performs any safety-sensitive function, including a pre-trip inspection.
Since January 2023, the full query replaces most previous-employer checks
For the first three years of the Clearinghouse, employers still had to ask a new driver’s previous employers for their drug and alcohol testing history, because the database didn’t yet hold three years of records. Since 6 January 2023 it does, so for drivers who only worked for FMCSA-regulated employers, the full pre-employment query covers that history. The exception is a driver who worked in a safety-sensitive role for an employer regulated by another DOT agency, such as transit or aviation. Their history still has to be requested from those employers directly.
Owner-operators and small fleets: the C/TPA you must name
An owner-operator is both the employer and the driver, so they can’t act as their own employer in the Clearinghouse. They must designate a consortium or third-party administrator, known as a C/TPA, to run their queries and report on their behalf. The same option is open to small fleets that don’t want to manage the account themselves. The C/TPA can use the employer’s query plan once it has been designated, but it can’t buy queries for the employer. For a one-truck operation, the practical routine is short: name the C/TPA, buy a small query plan, and put the annual query date in the same calendar as the truck’s annual inspection and the trailer’s service.
Scheduling annual queries so no driver goes past 12 months
The rule says at least once a year. The easiest way to miss it is to run every query on one date, then hire a driver in March and forget them. Many fleets tie each query to the driver’s hire anniversary, or run a fixed monthly batch.
Example: annual queries spread across the year by hire date
Representative example · sample drivers. Months with a name are that driver’s query month.
Put every driver’s query date next to their truck’s inspection record
In a 20-minute demo we’ll show how FleetRabbit keeps driver and vehicle compliance records together, and what to confirm for Clearinghouse tracking.
The three-business-day reporting clock after a violation
Employers must report alcohol results of 0.04 or higher, refusals to test and actual knowledge of drug use by the close of the third business day after they learn of it. Medical review officers report verified positive drug tests separately.
Day 0
Employer learns of the violation
A refusal, an alcohol result of 0.04 or more, or actual knowledge of use
Business day 1
Gather the facts
Test documents, supervisor statement, driver details
Business day 2
Prepare the report
Enter it in the Clearinghouse under the employer account
Business day 3
Deadline
Report submitted by the close of the third business day
The driver must be removed from safety-sensitive functions immediately, whatever the reporting status. That includes driving, but also inspecting, coupling a trailer or chassis, and waiting on duty to drive.
Return to duty, step by step, and why most prohibited drivers are stuck at the bottom
A prohibited driver can’t drive again until they complete the return-to-duty process under 49 CFR Part 40, Subpart O. The steps run in order, and each is recorded in the Clearinghouse.
1
SAP evaluation
The driver meets a substance abuse professional for an initial assessment.
2
Education or treatment
The driver completes what the SAP recommends.
3
SAP follow-up evaluation
The SAP confirms compliance and sets the follow-up testing plan.
4
Negative RTD test
A directly observed return-to-duty test comes back negative; the employer reports it.
5
Back to work, still tested
At least six unannounced follow-up tests in the first 12 months, for up to five years.
Once the negative RTD test is reported, the driver’s status changes to not prohibited, and the state can reinstate commercial privileges. The follow-up testing continues after that, and the employer reports when it is complete.
How long Clearinghouse records stay, and what employers keep themselves
Violation in the Clearinghouse
5 years, or until RTD and follow-up are complete if later
Driver inspection reports, for comparison
Bars scaled to five years. Inspection reports kept under 49 CFR 396.11; they live in a different file, but an auditor will ask for both.
Drug and alcohol records sit in the driver’s file. Inspection and repair records sit with each unit. A digital DVIR app and complete fleet maintenance records cover the vehicle side of the same audit, and preventive maintenance scheduling keeps the trucks ready while drivers are cleared.
A drug and alcohol Clearinghouse checklist you can use as a template
Before hiring a CDL driver
Driver registered in the Clearinghouse
Driver’s electronic consent received for the full query
Full pre-employment query run and result saved
Testing history requested from any previous employer regulated by another DOT agency
Pre-employment drug test with a verified negative result
Every year, for every CDL driver
Annual query run within 12 months of the last one
General consent on file for limited queries
Full query run within 24 hours if a limited query shows a record
Query result saved in the driver file
Query plan balance checked before the month’s queries
When something happens
Violation reported by the close of the third business day
Driver removed from safety-sensitive work at once
SAP referral list given to the driver
RTD negative result and follow-up completion reported
Records kept for at least three years
Where FleetRabbit fits, and what stays in the FMCSA Clearinghouse
Only in the Clearinghouse
Running and paying for queries, giving driver consent, reporting violations and RTD results
Documented on fleetrabbit.com
Digital DVIRs, preventive maintenance and work order history; hours-of-service data from ELD providers for dispatch
Confirm in a demo
Tracking each driver’s query dates and reminders, and holding drivers from dispatch while a status is unresolved
FleetRabbit for compliance-ready fleets
Driver records and truck records side by side, so an audit finds both complete
Inspections
Pre-trip and post-trip DVIRs with photos, signatures and mechanic sign-off.
Maintenance
Preventive schedules and full repair history for every tractor, trailer and chassis.
Dispatch
Driver hours from your ELD provider, so only available drivers are planned.
What the 20-minute demo covers:
driver and vehicle records together · how query dates could be tracked · DVIR and repair records · the free plan for three vehicles
Drug and alcohol Clearinghouse questions from fleet managers and drivers
Q1
What is the FMCSA Drug and Alcohol Clearinghouse?
An online database, live since January 2020, that records drug and alcohol program violations by CDL and CLP holders. Employers must check it before hiring and every year, and report violations to it.
Q2
How often do employers have to query the Clearinghouse?
A full query before a driver first performs safety-sensitive work, and a query at least once a year for every CDL driver they employ. A limited query is enough for the annual check unless it shows a record.
Q3
What happens if a limited query shows a record?
The employer must run a full query within 24 hours, with the driver’s electronic consent, or remove the driver from safety-sensitive functions.
Q4
How much does a query cost?
$1.25 per query, bought in plans from the FMCSA Clearinghouse. A limited query followed by a full query is charged once.
Q5
Can a prohibited driver keep their CDL?
No. Since 18 November 2024, state licensing agencies remove commercial driving privileges from drivers in prohibited status until they complete the return-to-duty process.
Q6
How long does a violation stay in the Clearinghouse?
Five years from the date of the violation, or until the driver completes the return-to-duty process and follow-up testing, whichever is later.
Q7
Does FleetRabbit run Clearinghouse queries?
No. Queries are run and paid for in the FMCSA Clearinghouse itself. Ask in a demo how FleetRabbit can track query dates and keep driver compliance records alongside your inspection and maintenance records.
Query · report · record
Never put a prohibited driver behind the wheel, and never miss an annual query
Build the routine once, and keep driver and truck records where an auditor can find them.
October 21, 2026By Emily Parker
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