Clearinghouse II is not a separate database — it is the set of amendments FMCSA finalized in 2023 that extend the original Clearinghouse (effective January 6, 2020) by requiring State Driver's Licensing Agencies (SDLAs) to query the database before issuing, renewing, or upgrading a CDL. The critical enforcement date for state CDL downgrades was November 18, 2024. If your drivers carry unresolved violations, their CDLs are now at risk of administrative downgrade — not just your operating authority.
TL;DR
- The original Clearinghouse has required pre-employment and annual carrier queries since January 2020.
- Clearinghouse II, effective November 18, 2024, requires SDLAs to check the database before issuing or renewing a CDL — a driver with a prohibited status can have their CDL downgraded to a non-CDL.
- Pre-employment queries cost $1.25 per query and require driver consent; limited annual queries do not require per-query consent.
- SAP return-to-duty requires a minimum of six follow-up tests in the first 12 months before an unresolved violation can be closed.
What Is the Clearinghouse?
The FMCSA Drug & Alcohol Clearinghouse is a federal database maintained under 49 CFR Part 382, Subpart G. It records every DOT drug and alcohol program violation for CDL holders: positive drug tests verified by an MRO, confirmed alcohol results of 0.04 or greater, refusals to test, and actual-knowledge violations. It also stores return-to-duty test results and the SAP-prescribed follow-up testing plan.
Before the Clearinghouse launched on January 6, 2020, a driver who failed a pre-employment drug test could walk down the street and apply at the next carrier without disclosing the violation. Carriers had no reliable cross-employer visibility. The Clearinghouse closed that gap by requiring every USDOT-registered employer of CDL drivers to register, report violations, and query before hiring.
Violations stay on record for five years from the date of the violation determination, or until the driver completes the return-to-duty process and has no subsequent violations — whichever is later.
What Clearinghouse II Added
The original 2020 rule covered carrier-to-carrier visibility. Clearinghouse II, finalized by FMCSA in May 2023, addressed the gap that let a driver with a prohibited Clearinghouse status still renew or hold a valid CDL at the state level. States were not required to check the database before issuing licenses.
That changed on November 18, 2024. The Clearinghouse II amendments (49 CFR Part 383) now require:
SDLA query before CDL actions. State Driver's Licensing Agencies must query the Clearinghouse before issuing a new CDL, renewing an existing one, or upgrading a license class. If the driver has an unresolved prohibited status, the state cannot complete the action.
CDL downgrade for prohibited drivers. If a driver's prohibited status is already recorded in the Clearinghouse and they have not resolved it through the SAP process, states must downgrade the CDL to a non-commercial Class D license. The driver cannot legally operate a CMV.
Why carriers missed this. Many carriers focused their Clearinghouse compliance on the query and reporting obligations — the parts that directly affect hiring and audit findings. The state-downgrade mechanism was treated as a driver problem. It is not. A carrier that dispatches a driver whose CDL has been administratively downgraded is operating with an unqualified driver, creating liability under 49 CFR Part 391 and potentially triggering an SMS violation in the Driver Fitness BASIC.
Practical implication. Annual queries are no longer just about checking for new violations. They are your signal that a driver's CDL status may be changing at the state level. A limited query that returns a positive result requires a follow-up full query within 24 hours. Do not wait until renewal season.
Pre-Employment Query
Before any CDL driver performs a safety-sensitive function for the first time at your company, you must conduct a full query of the Clearinghouse. There are no exceptions based on how recently the driver tested clean elsewhere.
A full query requires the driver to log into their Clearinghouse account and grant electronic consent. The process:
- You submit the query request from your employer Clearinghouse account.
- The driver receives a notification to log in and consent.
- After consent, you see the driver's complete violation history and current status.
- If the result shows a prohibited status, you cannot allow that driver to operate a CMV.
The cost is $1.25 per full query as of 2026. Consent granted for a pre-employment full query does not carry forward as annual consent — you will need separate consent for any future full queries on that driver.
If a driver refuses to provide electronic consent, do not hire them for safety-sensitive functions. Document the refusal.
Canadian carriers operating under USDOT authority must run the same pre-employment queries for any driver who will perform safety-sensitive functions in the United States. See the FMCSA Clearinghouse guide for Canadian carrier registration steps.
Annual Query for Existing Drivers
Every CDL driver currently employed must be queried at least once per calendar year. Most carriers use limited queries for the annual cycle because they do not require individual driver consent at the time of the query — provided the driver consented to annual limited queries when they were hired or through a blanket consent process.
A limited query returns a binary result: records exist or no records exist. It does not show the nature or details of any violation.
If a limited query returns no records, you have met your annual obligation for that driver.
If a limited query returns records exist, you must follow up with a full query within 24 hours. The full query requires the driver's individual electronic consent, so you need to notify the driver and get them to log in promptly.
Consent rules. Limited query consent, once granted by the driver, is valid for up to three years. Full query consent must be granted each time a full query is submitted. This consent structure is one of the more frequently misunderstood elements of the program — many carriers think any consent covers both query types indefinitely.
Cost: $1.25 per full query. Limited queries were free at program launch; confirm current pricing with your C/TPA.
For fleets with 50 or more drivers, running all annual queries in one batch on a set date each year (January 2 is common) creates a clean audit trail and avoids the piecemeal tracking problem that leads to missed drivers.
See DOT drug testing requirements for how Clearinghouse queries integrate with your broader testing program obligations.
Self-Query by the Driver
CDL holders can query their own Clearinghouse record at no cost, once per year. A driver-initiated self-query shows the same full violation history that an employer would see on a full query.
Drivers should run a self-query before starting a new job search. An unresolved violation discovered at pre-employment will derail a hire. Catching it first gives the driver time to engage a SAP and understand where they stand before an employer queries them.
Drivers can also request a correction if they believe a record is inaccurate. The correction request goes to the employer, MRO, or C/TPA that reported the violation — not to FMCSA directly.
SAP Return-to-Duty
A driver with a prohibited status in the Clearinghouse — positive drug or alcohol test, refusal, or actual-knowledge violation — cannot return to safety-sensitive functions until completing the full SAP return-to-duty sequence under 49 CFR Part 40, Subpart O.
Step 1: Initial SAP evaluation. The driver must be evaluated by a DOT-qualified Substance Abuse Professional. The SAP assesses the extent of the problem and prescribes education, treatment, or both. The carrier does not choose the SAP — the driver is responsible for finding a qualified SAP and completing the evaluation.
Step 2: Education or treatment. The driver follows the SAP's prescribed program. The SAP determines when the driver has complied sufficiently to be eligible for a return-to-duty test.
Step 3: Return-to-duty test. When the SAP determines the driver is ready, the driver takes a directly observed drug and/or alcohol test. If it comes back negative, the driver can return to safety-sensitive functions.
Step 4: Follow-up testing. This is where many carriers underestimate the duration. The SAP prescribes a follow-up testing schedule of at least six unannounced tests in the first 12 months after return. The SAP can extend the follow-up period for up to 60 months. Follow-up tests are in addition to random testing — the driver remains in the regular pool and is still subject to random selection.
Step 5: SAP follow-up evaluation. The SAP conducts a follow-up evaluation to confirm the driver continues to comply. If the driver tests positive again at any point, the clock resets.
Throughout this process, the driver's prohibited status remains in the Clearinghouse. Only after the negative return-to-duty test does the status change to allow return to duty, and only after the SAP certifies completion of the follow-up program does the violation fully resolve.
Penalties for Noncompliance
FMCSA civil penalty amounts for Clearinghouse violations are set under 49 CFR Part 386 and adjusted periodically for inflation. In 2026, penalties are structured as follows:
Failure to query (pre-employment or annual): Up to $6,755 per violation. Each driver for whom you failed to query counts as a separate violation. A carrier with 20 drivers who skips the annual query cycle faces potential penalties of $135,100.
Failure to report a violation: Up to $6,755 per violation, per driver, per incident. If your designated employer representative (DER) fails to report an actual-knowledge violation within two business days, that is a separate penalty from any testing failure.
Operating a driver in prohibited status: Allowing a driver with an unresolved prohibited status to perform safety-sensitive functions is treated as operating with an unqualified driver, which can trigger additional penalties under 49 CFR Part 391 and out-of-service orders under 49 CFR Part 395.
SMS scoring. Clearinghouse-related violations surface in the Driver Fitness BASIC on CSA scoring. Sustained non-compliance will move your percentile score toward intervention thresholds. See how to improve CSA scores for how BASIC scoring works.
Recordkeeping
Under 49 CFR Part 382.401, carriers must retain drug and alcohol testing records on the following schedule:
- Five years: Positive drug test results, alcohol results of 0.04+, refusal records, SAP referrals, and return-to-duty test results.
- Three years: Negative and cancelled drug test results.
- One year: Annual query results and documentation of limited queries.
- Two years: Records related to drug and alcohol testing collection.
Clearinghouse query results — including the date queried, driver name, and outcome — must be retained in the driver's qualification file. If a limited query returns records and you follow up with a full query, retain documentation of both.
Tracking driver compliance? The TruckerPro driver portal and compliance tracking log Clearinghouse queries, consent expirations, and SAP return-to-duty schedules so nothing falls off the radar.
FAQ
What is the difference between Clearinghouse and Clearinghouse II?
The original Clearinghouse (effective January 2020) required carriers to query the database before hiring CDL drivers and annually for current employees. Clearinghouse II, finalized in May 2023 with key provisions effective November 18, 2024, added a new requirement: State Driver's Licensing Agencies must query the Clearinghouse before issuing, renewing, or upgrading a CDL. A driver with an unresolved prohibited status can now have their CDL administratively downgraded to a non-commercial license, which means they cannot legally operate a CMV until they complete the SAP return-to-duty process.
How much does a Clearinghouse query cost in 2026?
Full queries cost $1.25 per query as of 2026. A full query requires individual driver consent and reveals complete violation history. Limited queries, which return only whether records exist, have been available at no charge since the program launched, but carriers should confirm pricing with their C/TPA as FMCSA fee structures can be adjusted. The annual cost for a 50-driver fleet running full pre-employment queries on new hires plus limited annual queries is typically under $100/year for query fees alone.
Can states really downgrade a CDL over a Clearinghouse hit?
Yes. Under the Clearinghouse II amendments to 49 CFR Part 383, SDLAs are required to query the Clearinghouse before processing any CDL action (issuance, renewal, upgrade, or reinstatement). If the driver's Clearinghouse status is prohibited, the state must either deny the CDL action or, for an existing CDL holder, downgrade the license to a non-commercial class. As of November 18, 2024, states are mandated to implement this process. A driver who loses their CDL class due to a Clearinghouse violation has no path back until they complete the SAP return-to-duty sequence and receive a negative return-to-duty test result.
How often do I need to query my existing drivers?
At minimum, once per calendar year per CDL driver. Most carriers use limited queries for the annual cycle because they do not require per-query driver consent (provided consent was collected when the driver was hired or through a blanket consent process). If a limited query returns a positive result, you must follow up with a full query within 24 hours. Running all annual queries on a single date (e.g., January 2) creates a clean audit trail. Some carriers run quarterly limited queries to catch violations faster, though only one annual query per driver is federally required.
What does SAP return-to-duty actually involve?
The SAP process runs in four phases: an initial evaluation by a DOT-qualified Substance Abuse Professional, completion of whatever education or treatment the SAP prescribes, a directly-observed negative return-to-duty drug or alcohol test, and then a minimum of six unannounced follow-up tests in the first 12 months after returning to duty. The SAP can extend the follow-up period up to 60 months. The driver's prohibited status in the Clearinghouse changes to eligible-to-return only after the negative return-to-duty test. The entire process is the driver's responsibility to initiate — the carrier does not manage the SAP engagement — but the carrier must not allow the driver to work until all steps are complete.
Does Canada have a drug clearinghouse like the US?
No. Canada does not have a federal drug and alcohol clearinghouse for commercial drivers. Transport Canada and the CCMTA have discussed driver fitness record-sharing, but there is no mandatory national database for drug test violations equivalent to the FMCSA Clearinghouse. Canadian carriers operating cross-border under USDOT authority are subject to US Clearinghouse requirements for their US operations — they must register, query before hiring for US routes, and run annual queries for drivers in the cross-border roster. For purely Canadian operations, carriers rely on their own testing programs and provincial licensing records. See DOT compliance checklist for what Canadian cross-border carriers need to maintain.