The FMCSA Drug and Alcohol Clearinghouse: what NC drivers need to know

The short version

The Drug and Alcohol Clearinghouse is FMCSA's online record of drug and alcohol testing violations by CDL and CLP holders. Employers must check it before they hire you and at least once a year after that. [4][16]

Since November 18, 2024, it also reaches your license. If the Clearinghouse lists you as prohibited, the state must remove the commercial privilege from your license until you finish the return-to-duty process. [8][11]

In North Carolina, state law says NCDMV must disqualify you from driving a commercial vehicle for at least 30 days and until you complete that process. NCDMV gets the notice from the Clearinghouse on its own. [18][16]

Owner-operators are their own employer under these rules. That means you need a consortium or third-party administrator, called a C/TPA, to handle Clearinghouse reporting for you. [6][15]

This is a plain-language guide, not legal advice. Where we give our own advice, we say so. Everything else comes from the federal rules, NC statutes, NCDMV or FMCSA, listed at the bottom. [4][16][18]

What the Clearinghouse is and who it covers

The rules live in 49 CFR Part 382, and the Clearinghouse itself is Subpart G. Part 382 covers every driver who operates a commercial vehicle in commerce and needs a CDL under Part 383, plus their employers. [1][4]

That reaches drivers who stay inside North Carolina too. The rule says in commerce in any state, and the usual Part 390 exceptions do not apply to drug and alcohol testing. [1]

Employers and the service agents who report for them must register before they can query or report. An employer has to name any C/TPA it uses and update that within 10 days of a change. [7]

Drivers are not required to register. But you must register to approve a full query, and to see your own record. FMCSA says drivers can view their record at no cost. [13]

What an employer learns is restricted. It may use Clearinghouse information only to decide whether a driver is barred from safety-sensitive work, and sharing it beyond that can bring civil and criminal penalties. [24]

Queries and your consent

Before a carrier puts you to work, it must run a full query. A full query shows the employer any violations on your record, and it needs your specific consent through the Clearinghouse. [4][5]

After that, the employer must query at least once a year for every driver it tests. It may use a limited query instead. A limited query only says whether a record exists, without showing what it is. [4]

Consent for limited queries can be a general written consent, and it can cover more than one year. If a limited query shows something, the employer has 24 hours to run a full query or must pull you off safety-sensitive work. [4][5][13]

Saying no has a cost. No employer may let you do safety-sensitive work if you refuse the consent the rules require. [5]

FMCSA also tells an employer if a new violation is added to your record within 30 days after it queried you. Employers must keep records of their queries for 3 years. [4]

Employers pay for queries, not drivers. As of September 2026, FMCSA's query plan page lists a flat $1.25 per query, limited or full. [14]

What puts you in prohibited status

You are prohibited from safety-sensitive work if your record shows a verified positive, adulterated or substituted drug test. The same applies to an alcohol test at 0.04 or higher, or a refusal to test. [4][16]

The last trigger is an employer's report of actual knowledge. That covers alcohol use on duty, before duty or after a crash, and drug use, when an employer knows about it without a test. [4][2]

Actual knowledge can come from what a supervisor sees, a past employer, your own admission, or a traffic citation for driving a commercial vehicle under the influence. [2]

That last one matters. Under FMCSA's 2021 rule, a DUI citation in a commercial vehicle counts as a violation even if you are never convicted. It stays on record for 5 years or until return to duty, whichever is later. [11]

If the charge is dropped or you are found not guilty, you can ask FMCSA to add proof of that to your record, so future employers see it. The violation itself stays. [10][11]

Clearinghouse-II: losing the CDL privilege

FMCSA's second Clearinghouse rule was published October 7, 2021. States had to comply by November 18, 2024. Before that, a prohibited driver could still hold a valid-looking CDL. [11]

Now the state must check the Clearinghouse before it issues, renews, transfers or upgrades a CDL or permit. If you are prohibited, the state must not complete the transaction. Applying counts as your consent to that check. [8][12]

If you already hold a CDL or CLP, the state must start its downgrade process when FMCSA notifies it that you are prohibited. It must finish and record the downgrade within 60 days of that notice. [8]

Downgrade here means the state removes the commercial privilege from your license. The federal rule then bars you from driving a commercial vehicle until the state puts that privilege back. [8][3]

If you finish return to duty before the downgrade is done, the state must stop the process, where state law allows. If it is already done, the state must make you eligible to reinstate. If you were flagged by mistake, it must reinstate you quickly and clear the entry. [8]

How North Carolina handles it

North Carolina changed its law to match. Session Law 2024-30 rewrote G.S. 20-17.4(l), and that change took effect October 1, 2024. [17]

The statute says that when NCDMV gets notice of your prohibited status, it must disqualify you from driving a commercial vehicle. The disqualification lasts at least 30 days and until NCDMV gets proof you completed the SAP process. [18]

Note the difference in wording. Federal rules speak of a downgrade finished within 60 days of notice. North Carolina's statute and NCDMV's page call it a disqualification with a 30-day minimum. Read any letter NCDMV sends you for your exact dates. [8][18][16]

NCDMV says it will contact you only when you are first put in prohibited status. After that, updates come through your Clearinghouse account, so keep your login working and your contact details current. [16][23]

FMCSA sends its own notices by U.S. Mail to the address on file with your licensing state, unless you give the Clearinghouse another way to reach you, such as email. [23]

NCDMV says you do not send it any papers. The Clearinghouse tells NCDMV when you finish return to duty, and then you can go back to NCDMV to reinstate. Customer service is (919) 715-7000. [16]

The return-to-duty process

After any violation, you cannot do safety-sensitive work for any employer until you finish the return-to-duty process in 49 CFR Part 40, Subpart O. The first step is an evaluation by a substance abuse professional, called a SAP. [19][3]

NCDMV says your employer should give you a list of SAPs. You can pick from it or find your own. Either way, you must name your SAP in your Clearinghouse account before the evaluation starts. [16]

Your employer does not have to pay for the SAP or any treatment, or offer you your job back. Who pays is left to you and the employer. If it does bring you back, it must make sure you followed the SAP's plan. [20][21]

Next you complete the education or treatment the SAP sets. Then the SAP checks that you complied and writes a follow-up testing plan. SAPs report their steps to the Clearinghouse within one business day. [16][22][6]

Then comes the return-to-duty test. It can only happen after the SAP signs off. You need a negative drug result, an alcohol result under 0.02, or both, and the employer must report it within three business days. [21][6]

Follow-up testing comes after that. The SAP must order at least six unannounced tests in your first 12 months back, and may add tests over the next 48 months. The plan follows you if you change jobs. [22]

You can go back to work before follow-up testing is done, if your employer takes on managing those tests. That is why the negative return-to-duty test is the step that restores your eligibility. [4][16]

Owner-operators: you are the employer

If you drive under your own authority, you must meet both the employer rules and the driver rules in Part 382. A self-employed person counts as an employer. [1][2]

You must name a C/TPA to handle the employer reporting duties for you. FMCSA's owner-operator FAQ says the C/TPA, not you, reports violations for your company. [6][15]

You still have to query yourself, before you start driving and every year after. Your C/TPA can run those queries for you, but FMCSA says a C/TPA cannot buy the query plan. You buy it on your own account. [4][15]

A one-driver company also needs a random testing pool of at least two covered drivers. In practice, that means joining a consortium. [1]

Our advice: log into the Clearinghouse once a year and confirm your C/TPA is still listed on your account. If you switch C/TPAs, update it right away, since the rule gives 10 days. [7][15]

How long it stays, and fixing mistakes

A violation stays visible to employers until four things are all true. The SAP has reported, the negative return-to-duty test is reported, your employer reports all follow-up tests done, and 5 years have passed since the violation. [9]

So finishing return to duty early does not wipe the record early. And waiting out 5 years does not clear it if you never finished the process. [9]

You can petition FMCSA to fix an administrative error, such as a typo or a duplicate report. You cannot use a petition to argue that a test result or refusal was wrong. [10]

Your petition needs your name, address, phone, CDL number and state, what is wrong, and your evidence. Without evidence it can be dismissed. File it through the Clearinghouse or by mail to FMCSA. [10]

FMCSA answers within 45 days. If the error is keeping you out of the truck, ask for expedited review, which gets an answer within 14 days. You can then ask for an administrative review, which FMCSA must finish within 30 days. [10]

Our advice: register now, before you need to, and check your own record. A correct record costs nothing to confirm, and an error is easier to fix before a new job or a CDL renewal depends on it. [13][8]