FMCSA Clearinghouse Query Management: Full and Limited Queries for CDL Employers
Employers must query the FMCSA Drug & Alcohol Clearinghouse before hiring CDL drivers and annually for all current drivers. Foley manages both full and limited queries for you.
Before the FMCSA Drug and Alcohol Clearinghouse was established in 2020, any driver who failed a drug test while employed by one carrier could be hired by another. The new employer would have no way of knowing about the drug violation(s) unless the driver were to inform them.
Now, the FMCSA Clearinghouse tracks drug and alcohol violations committed by CDL drivers. Every employer must query the Clearinghouse before hiring drivers, and on an annual basis. The Clearinghouse II now links violation data directly to state DMVs as well, so drivers who ignore their violations won’t simply risk losing their jobs; they also risk losing their CDLs.
What the Clearinghouse Contains
The Clearinghouse tracks:
- Verified positive drug test results
- Alcohol test results of 0.04 BAC or higher
- Refusals to test
- Actual knowledge violations determined by employers
- Return-to-Duty (RTD) test results and completion status
- Follow-up testing plan status
Full Clearinghouse Queries vs. Limited Clearinghouse Queries
Knowing what each type of Clearinghouse query shows and when to run them is key to following FMCSA requirements.
| Full Query | Limited Query | |
|---|---|---|
| What it shows | Complete violation record: type, substance, status, dates | Whether any record exists |
| Driver consent required | Yes, electronic consent in the Clearinghouse system | Multi-year general consent form outside of the Clearinghouse |
| When required | Pre-employment (before any safety-sensitive function), and when a limited query returns a positive violation record | Annually for all current CDL drivers |
| Result returned | Detailed record or "no results found" | "No record exists" or "record exists" |
Most employers use a two-step process for annual Clearinghouse queries: first, they run the limited query for everyone. Then, if a driver record exists, they get the driver’s consent and run a full query immediately. If a limited query does not show that a driver's record exists, they then follow the FMCSA recordkeeping requirements.
“The limited query is the annual compliance check. Think of it as a pass/fail screen. If it comes back clean, you document it and move on. If it flags a record, you switch to a full query immediately, because you cannot let that driver keep driving until you know what the violation is.”
Pre-Employment Queries: FMCSA-Regulated Employer Requirements
Before a CDL driver performs any safety-sensitive job functions, you must get their electronic consent, run a full query, review the results, and document them in their driver qualification file.
But there is one common mistake employers make: allowing a driver to perform safety-sensitive duties on day one and running a query on them a few days later. This is an FMCSA violation, which can result in hefty fines. It must be done before they begin driving for the employer.
If the query results in an unresolved violation, the driver cannot legally drive. If it’s a resolved violation, look at the details to find out if there are any remaining follow-up testing obligations before you make a hiring decision.
Annual Queries: What to Do for Your Current CDL Drivers
You must run a Clearinghouse limited query at least once per year for every CDL driver performing safety-sensitive functions for your company. The larger your fleet, the more queries you’re required to manage, which is why many employers rely on a Certified Third-Party Administrator (C/TPA) to handle them on their behalf.
FMCSA Clearinghouse Reporting Obligations
| Event | Reporting Deadline |
|---|---|
| Verified positive drug test result | As soon as practicable (within 3 business days) |
| Alcohol test result ≥ 0.04 BAC | As soon as practicable |
| Refusal to test | As soon as practicable |
| Actual knowledge violation | As soon as practicable |
| Return-to-Duty test (negative result) | MRO reports this directly |
| RTD process completion | Employer reports this |
Failing to report these events in the Clearinghouse doesn't just increase your risk of being cited for FMCSA violations; it also inhibits the driver from resolving their own record and prevents them from seeking other employment opportunities. For example, if an employer forgets to report that a driver completed the DOT return-to-duty process, it can permanently derail a driver's career until another employer catches it and corrects it.
The Clearinghouse II: State Licensing Integration
The Clearinghouse II rule took effect on November 18, 2024. State driver licensing agencies now have access to Clearinghouse data and are required to act on it.
This means that drivers with unresolved violations who haven't started the DOT return-to-duty process will face CDL downgrades. Anyone with unresolved drug or alcohol violations reported in the Clearinghouse cannot receive a new CDL or CLP, either. Drivers transferring their CDL to another state will be automatically screened in the Clearinghouse to check for unresolved violations.
Common Clearinghouse Compliance Failures
| Failure | Consequence |
|---|---|
| No pre-employment full query | Violation under 49 CFR §382.701 |
| Missing annual limited query | Same classification — operating without required screening |
| Failure to report a violation | Driver's record doesn't update; creates a safety gap |
| Failure to report RTD completion | Driver's record stays unresolved; blocks future employment |
| Running limited query when full query is required | Limited query doesn't satisfy the pre-employment requirement |
| Ignoring a positive limited query result | Must follow up with full query immediately |
How Foley Makes Clearinghouse Management Easier
Foley supports Clearinghouse query management as part of its C/TPA programs, including pre-employment full queries that require driver consent in the Clearinghouse, and annual limited queries for current drivers. Foley can also capture limited-query consent electronically during the application process, run limited queries on schedule, and automatically trigger the consent request workflow when a limited query finds records and a full query is required.
Violation reporting is fully managed as well. Positive test results, refusals, and return-to-duty completion updates are all reported to the Clearinghouse within the required timeframes.
With Foley, your Clearinghouse queries can be managed alongside driver qualification files and drug testing records in one platform, making compliance steps easier to track and document. Request a demo to start managing your Clearinghouse compliance in less time and with better peace of mind.
Revision Record
| Date | Author | Change |
|---|---|---|
| 2026-04-23 | Foley Compliance Team | Initial publication, FMCSA Clearinghouse service page covering full/limited queries, employer obligations, Clearinghouse II state integration |
| 2026-03-23 | Foley Compliance Team | Full rewrite for voice and detection compliance |
| 2026-03-23 | Foley Compliance Team | Rewrite pass 2 for detection compliance |