FMCSA Clearinghouse Compliance: A Small-Carrier Guide

The FMCSA Drug and Alcohol Clearinghouse is not a large-carrier program. It applies to every employer of CDL drivers — including a one-truck owner-operator running under their own authority. The “we’re too small to worry about it” assumption has cost carriers and independents money in fines and hours in headaches during compliance reviews. If you hold a USDOT number, employ CDL drivers (including yourself), and those drivers operate CMVs requiring a CDL, the Clearinghouse applies to you.

This guide walks through what the Clearinghouse is, how to register, what queries you must run and when, the specific deadline owner-operators most often miss, and what a violation means for a driver’s eligibility to operate.

What the Clearinghouse Is and Why It Exists

The FMCSA Drug and Alcohol Clearinghouse is a secure, online federal database that maintains records of violations of FMCSA’s drug and alcohol testing regulations for CDL drivers. Before the Clearinghouse existed, an employer could hire a driver who had tested positive or refused a test at a previous employer — and have no way of knowing. Drivers could simply move from carrier to carrier without completing return-to-duty requirements.

The Clearinghouse closed that gap. It records:

• Positive drug or alcohol test results
• Refusals to test (including adulterated or substituted specimens)
• Violations of the alcohol prohibition (testing at or above 0.04 BAC while on duty)
• Employer reports of actual knowledge of drug or alcohol use
• Negative return-to-duty test results
• Completion of follow-up testing plans

Employers must report violations to the Clearinghouse, and they must query it before hiring a CDL driver and at least once per year for every current CDL driver on their roster.

Who Must Register and Comply

The obligation is broad and does not scale with fleet size:

• Motor carriers employing CDL drivers in CMV operations requiring a CDL
• Owner-operators who are their own employer (self-employed CDL holders)
• Employers in non-transportation industries that employ CDL drivers (construction, utility, etc.)

There are no exemptions for small carriers. A carrier with a single driver — even if that driver is the owner — must comply with all Clearinghouse requirements.

Step 1: Register in the Clearinghouse

If you haven’t registered yet, do it now. Registration is at clearinghouse.fmcsa.dot.gov and is free. You’ll need your USDOT number to register as an employer. Individual drivers must also create their own accounts to consent to queries and view their own records.

For employers, registration creates your account through which you will run queries and, when required, report violations.

Step 2: Owner-Operators Must Designate a C/TPA

This is the requirement that trips up the most solo operators. An owner-operator cannot administer their own drug and alcohol testing program — federal regulations prohibit self-administration. You must designate a Consortium/Third-Party Administrator (C/TPA) to manage your testing program.

A C/TPA is an organization that manages DOT drug and alcohol testing programs on behalf of employers. For owner-operators, joining a consortium is the standard path. The consortium:

• Enrolls you in a random testing pool
• Manages your random selection and testing notifications
• Can assist with Clearinghouse query obligations
• Maintains records of your testing history

C/TPA fees vary; compare services, but do not skip this step. Operating without a designated C/TPA when you are an owner-operator is a compliance failure — not a gray area.

In the Clearinghouse, you must designate your C/TPA so they can conduct queries on your behalf and access your records as needed.

The Two Types of Queries — and When Each Is Required

Pre-Employment Full Query

Before a CDL driver operates a CMV for you — even for one day, even if they’re a rehire — you must run a full pre-employment query in the Clearinghouse. This is not optional based on how long the driver will work for you or what their prior relationship with your company was.

A full query requires the driver’s electronic consent through their own Clearinghouse account. The driver must log in and provide consent before you can view their results. If a driver refuses to consent, you may not allow them to operate a CMV.

What the full query reveals: all Clearinghouse records for that driver — violations, RTD completions, follow-up testing status, and whether they have any unresolved violations that would prohibit them from operating a CMV.

A driver with an unresolved violation in the Clearinghouse is prohibited from operating a CMV. Hiring them anyway — or continuing to employ them once you discover the record — creates significant liability for the employer.

Annual Limited Query

For every CDL driver currently employed, you must run at least one limited query per calendar year. The annual limited query deadline is January 5.

The limited query returns a simpler result: either the driver has Clearinghouse records (triggering the need for a full query with driver consent) or they don’t. If the limited query returns a “record exists” response, you must follow up with a full query within 24 hours.

Annual limited queries can be run in batches for carriers with multiple drivers. Many carriers batch them in late December or early January to meet the January 5 deadline for all drivers simultaneously.

For owner-operators: your C/TPA can run the annual query on your behalf. Make sure that arrangement is confirmed in writing with your C/TPA.

The Deadline Owner-Operators Most Often Miss

My opinion: the January 5 annual query deadline is the one owner-operators blow most frequently, and here’s why — it falls in the dead zone between the holiday week and getting back to normal operations in January. It’s easy to miss when you’re dealing with Q4 paperwork, Q1 planning, and a short week.

Unlike the quarterly IFTA deadlines (which are baked into the financial rhythm of the business) or MCS-150 updates (which only come around every two years), the January 5 Clearinghouse deadline is annual, early in the month, and doesn’t have an invoice attached to prompt you. Owners who don’t have a compliance calendar — or who rely on their C/TPA to remind them without having confirmed that arrangement — miss it.

Fix this with a single calendar entry created right now: “Clearinghouse annual query due January 5” recurring every year, with a reminder two weeks out. If your C/TPA is handling it, confirm in December that it will be done. Don’t assume.

Reporting Violations: Employer Obligations

If a driver in your program tests positive, refuses to test, or you have actual knowledge of a drug or alcohol violation, you are required to report it to the Clearinghouse. Reporting timelines and requirements:

• Positive test or refusal: the Medical Review Officer (MRO) or collector reports certain results; employers report employer-based knowledge violations
• Actual knowledge violations (e.g., a driver admits to use, or is observed using): the employer must report within three business days

Failure to report a violation to the Clearinghouse is itself a violation of FMCSA regulations. This is not a “we’ll handle it internally” situation.

What Happens After a Violation: Return-to-Duty

A driver with a drug or alcohol violation in the Clearinghouse is prohibited from operating a CMV until they complete the Return-to-Duty (RTD) process. This is not a simple administrative step — it requires:

1. Substance Abuse Professional (SAP) evaluation — the driver must be evaluated by a qualified SAP, who recommends a treatment or education program
2. Completion of the recommended program — the driver must complete what the SAP recommends
3. Follow-up SAP evaluation — confirming the driver has complied with the program
4. Negative return-to-duty drug/alcohol test — conducted under direct observation
5. Follow-up testing plan — the SAP prescribes a follow-up testing schedule (minimum 6 tests in the first 12 months); the employer is responsible for executing this plan

All of this is recorded in the Clearinghouse. When an employer runs a query on a driver who has completed RTD, they can see that the process was completed. If a driver shows a violation record but no completed RTD, they cannot legally operate — and any employer who allows them to is taking on serious liability.

For carriers: if a current driver tests positive, you cannot simply let them keep driving while they “work through it.” The driver must stop operating the CMV immediately. The RTD process can take weeks to months depending on the SAP’s recommendations.

Clearinghouse Records and Driver Privacy

Drivers have rights within the Clearinghouse system. They can:

• View their own records at any time through their Clearinghouse account
• See a query history showing which employers have queried their record and when
• Contest inaccurate information through a formal dispute process

One important nuance: drivers cannot delete or block accurate violation records. A violation remains in the Clearinghouse for five years from the date of the violation, or until the driver has completed the RTD process — whichever is later.

Staying Compliant: What Small Carriers Should Have in Place

A basic Clearinghouse compliance structure for small carriers and owner-operators includes:

• Registered employer account in the Clearinghouse
• Designated C/TPA (mandatory for owner-operators; strongly recommended for small carriers)
• Pre-employment query process — written into your hiring procedure so it can’t be skipped
• Annual query calendar entry for January 5 each year
• Violation reporting process — know who in your organization is responsible for reporting and when
• Driver consent on file — through their Clearinghouse account, not a paper form

If you’re a small carrier who has been operating without one or more of these elements, a compliance review is the right next step before a roadside inspection or compliance audit surfaces the gap.

Our team at Logistics Assistance Now works directly with small carriers and owner-operators to set up complete drug and alcohol testing compliance programs — including Clearinghouse registration, C/TPA coordination, and ongoing monitoring. Explore our compliance services or learn more about what we do for independent contractors.

Frequently Asked Questions

I’m a one-truck owner-operator under my own authority. Does the Clearinghouse really apply to me? Yes, without exception. Any employer of CDL drivers operating CMVs that require a CDL must comply with Clearinghouse requirements. As an owner-operator, you are your own employer, and the obligations apply fully to you — including designating a C/TPA.

Can I run the annual query for my drivers myself, or does my C/TPA have to do it? As a registered employer, you can run queries directly in the Clearinghouse system yourself. Your C/TPA can also run queries on your behalf if you designate them with that access. Either approach works — the key is that the query is run by January 5.

What if I don’t have the driver’s Clearinghouse consent before they start? You cannot allow a driver to operate a CMV before completing the pre-employment full query — which requires their consent. If the consent isn’t secured, the driver cannot operate. Build this into your onboarding sequence as a mandatory step before the driver touches a truck.

How long does a violation stay in the Clearinghouse? Violation records are retained for five years from the date of the violation or until the driver completes the RTD process, whichever is later. After that, the record is removed from the driver’s publicly queryable history (but remains in FMCSA’s data).

What if a driver disputes a violation record in the Clearinghouse? Drivers can contest inaccurate information through the Clearinghouse’s dispute process. Accurate records, however, cannot be removed before the retention period expires. The dispute process is for errors, not for removing factually accurate violations.

Get Your Clearinghouse Compliance in Order

The Clearinghouse is one of those compliance areas where the gap between “I think we’re compliant” and “I can prove we’re compliant” matters. Whether you’re setting up your program from scratch or trying to identify what’s missing in your current process, Logistics Assistance Now can help.

Schedule your free consultation at logisticsassistancenow.com/contact — let’s audit what you have and close the gaps before someone else does.

Disclaimer: FMCSA drug and alcohol testing regulations, Clearinghouse requirements, and related deadlines may change. Always verify current requirements with FMCSA or consult LAN before making compliance decisions.