Everything in 49 CFR Part 391 is written as if "the motor carrier" and "the driver" are two different people. As long as you were an owner-operator driving your own truck, they were the same person and you filled in both sides of every form yourself. The day you hire someone, that stops — you are the carrier, they are the driver, and a set of duties you may never have noticed become yours, with clocks that start on the day the driver's employment begins.
This post is the sequence. The DQF walkthrough covers what goes in the file once it exists; this covers what has to happen, in what order, before the new driver turns a wheel — and which items must be received rather than merely ordered.
Two clocks, not one
Most of the hiring rules fall into one of two windows. Sort every task into the right one and the process stops feeling like a wall of citations.
| Must be done before the driver first drives for you | Must be done within 30 days of the employment start date |
|---|---|
| Completed and signed application — §391.21(a) | Motor vehicle record from every licensing authority, 3-year history, filed in the DQF — §391.23(a)(1), (b) |
| Road test certificate, or an accepted equivalent — §391.31(a), §391.33 | Replies from previous DOT-regulated employers (or documented good-faith attempts), filed in the investigation history file — §391.23(c)(1) |
| Medical certificate obtained and examiner verified, records in the DQF — §391.23(m) | Previous-employer drug and alcohol information reviewed, if it could not be obtained beforehand — §40.25(d) |
| Verified negative pre-employment drug test result received — §382.301(a) | |
| Full Clearinghouse query conducted — §382.701(a) | |
| Drug and alcohol policy materials given to the driver, receipt signed — §382.601(a)(1), (d) |
Part 391 applies to anyone driving a commercial motor vehicle for you — 10,001 lb or more GVWR or GCWR, among other triggers, per §390.5. The Part 382 drug-and-alcohol items apply only to drivers who need a CDL, per §382.103(a)(1). And "employee" in §390.5 expressly includes an independent contractor operating a CMV, so an owner-operator leasing onto your authority goes through the same steps as a W-2 hire.
Step 1 — the application, and the two notices that go with it
Per §391.21(a), nobody drives for you until they have completed and signed an application on a form you furnish. §391.21(b) lists twelve required items. The ones that trip people up:
- Three years of addresses, employers (with dates and reason for leaving), accidents, and traffic convictions other than parking.
- For each employer, whether the applicant was subject to the FMCSRs and whether the job was DOT safety-sensitive — §391.21(b)(10)(iv). Those two answers tell you which employers you must investigate in Step 4.
- For CDL applicants only, a further seven years of CMV-driving employers before the three-year window — §391.21(b)(11).
- The exact certification and signature line in §391.21(b)(12). A generic job application does not satisfy this; the language is prescribed.
Two things must happen before the application is submitted, per §391.21(d): tell the applicant that their previous employers will be contacted for a safety-performance-history investigation, and notify them in writing of their due-process rights under §391.23(i) — to review what previous employers send, have errors corrected, and attach a rebuttal. Print both notices on the application itself.
Step 2 — the qualification checklist you are certifying
§391.11(b) is the list every other step feeds. The driver must be at least 21, able to read and speak English well enough to converse with the public, read signs, respond to officials and make record entries, able to safely operate the equipment you will assign, physically qualified under subpart E (Step 6), holding a currently valid license from one state only, not disqualified under §391.15, and holder of a road test certificate or accepted equivalent (Step 5).
Knowingly using a disqualified driver is an automatic-failure item at a new-entrant safety audit (§385.321(b), item 11), and §391.15 disqualifications include out-of-service orders and convictions that will not surface in an interview. The MVR in Step 3 is how you find them.
Step 3 — the MVR from every state, within 30 days
§391.23(a)(1) requires an inquiry, within 30 days of the date employment begins, to every licensing authority where the driver held a license or permit during the preceding three years, for that three-year record; §391.23(b) puts the copy in the DQF within the same 30 days. If a state does not respond, you document a good-faith effort — the documentation is the compliance.
The 30-day window is the maximum, not the target: the MVR is what tells you whether the person is disqualified, so pull it before the first trip and treat the 30 days as the deadline for having it filed. The annual MVR post walks the request mechanics.
Step 4 — the previous-employer investigation
This is the step new carriers most often skip, and the §391.23 violation is the finding that follows. §391.23(a)(2) requires an investigation of the driver's safety performance history with DOT-regulated employers during the preceding three years, on two tracks:
- General and accident history from every previous employer that used the driver to operate a CMV in that window — §391.23(d): identification and employment verification, plus the §390.15(b)(1) accident-register data for any recordable accidents.
- Drug and alcohol history from every previous DOT-regulated employer where the driver held a tested, safety-sensitive position — §391.23(e): any Part 382 or Part 40 violation in the last three years, whether the driver failed to complete a substance abuse professional's program, and any post-referral test failures.
For the drug-and-alcohol track, the rule changed in 2023. Per §391.23(e)(4) and §382.413(b), as of January 6, 2023 you satisfy the (e) inquiry for FMCSA-regulated previous employers by running the Clearinghouse query in Step 8 — no separate letter. Two exceptions: if the applicant is mid-way through a follow-up testing plan, you request that plan directly from the previous employer (§391.23(e)(4)(i)), and if a previous employer was regulated by a different DOT agency — FTA, FRA, PHMSA — you request the information directly under §40.25 (§391.23(e)(4)(ii)). The general-and-accident track under (d) is unchanged: you still contact those employers yourself.
Consent is required, and refusal is disqualifying: a driver who refuses consent for the drug-and-alcohol release, or for the Clearinghouse query, must not be allowed to drive (§391.23(f)(1)–(2)). §40.25(j) adds one question you ask the driver directly: whether they tested positive or refused a pre-employment test at any DOT-regulated employer that did not hire them in the past two years.
Previous employers must respond within 30 days, even if they have nothing to report (§391.23(g)(1)); your record of every contact or attempt goes into the driver investigation history file within 30 days of the employment start (§391.23(c)(1)), or a note that no investigation was possible if the driver has no DOT-regulated history (§391.23(c)(4)). That file is separate from the DQF and usable only for the hiring decision — the investigation-file post covers §391.53.
The optional check: PSP
FMCSA's Pre-Employment Screening Program is not a Part 391 requirement — its statute, 49 U.S.C. 31150(c), says use "shall not be mandatory." It returns the driver's crash and inspection reports from FMCSA's own system, and §31150(b) conditions access on the applicant's written consent. It is the cheapest independent look at how a stranger actually drives; collect the authorization alongside the Step 4 consent, and check psp.fmcsa.dot.gov for current fees and data windows, which are set there, not in the CFR.
Step 5 — the road test, or the equivalent you accept
Per §391.31(a), nobody drives a CMV for you until they have passed a road test and been issued a certificate. §391.31(b) lets you give it yourself or designate someone competent to evaluate the driver on the equipment you intend to assign. (The same paragraph says a driver who is the carrier must be tested by someone else — which is why the certificate is so often the missing item in a single-truck DQF.)
The test must cover the eight operations in §391.31(c), from the §392.7 pre-trip inspection through coupling, traffic, turning, braking and backing. You rate each on a road-test form (§391.31(d)), sign it, and complete a certificate in substantially the form at §391.31(f); the signed form and certificate go in the DQF (§391.31(g)).
§391.33 lets you accept an equivalent instead: a valid CDL for the category of vehicle you will assign — but not on the strength of a doubles/triples or tank endorsement, which §391.33(a)(1) carves out — or a road test certificate issued under §391.31 within the preceding three years. A legible copy goes in the DQF (§391.33(b)). You may still require a road test on top of it (§391.33(c)) — and for a first hire into a truck you own, you probably should.
Step 6 — the medical certificate, and what you have to verify
Per §391.45(a) and §391.41(a)(1)(i), nobody operates a CMV without being medically examined and certified. Most applicants arrive with a current card; the carrier's duty is in §391.23(m), and it depends on whether the driver needs a CDL:
- Non-CDL drivers — §391.23(m)(1): obtain the original or a copy of the medical examiner's certificate and any variance it rests on, verify the examiner was listed on the National Registry as of the issue date, and put the certificate and a note of that verification in the DQF before the driver operates a CMV.
- CDL drivers — §391.23(m)(2): pull the CDLIS motor vehicle record from the driver's current licensing state and document, before the driver operates a CMV, the operation type the driver self-certified under §383.71(b)(1) (for a typical for-hire interstate carrier, non-excepted interstate) and that the record shows a valid medical certificate and any required variance. Per §391.23(m)(4), the electronic record controls if it conflicts with a paper card.
The CDL side has been moving since June 2025, when the state record replaced the paper card as the document of record. If the applicant's CDLIS record does not yet show a certification they hold a paper card for, the medical card post explains the state-by-state picture and the temporary paper-card allowance that expires in October 2026.
Step 7 — the pre-employment drug test: a result you must receive
This is the first of the two items that separate "ordered" from "done." Per §382.301(a), the driver must be tested for controlled substances before their first safety-sensitive function for you, and — the operative sentence — no employer may allow the driver to perform safety-sensitive functions "unless the employer has received a controlled substances test result from the MRO or C/TPA indicating a verified negative test result." A specimen collected on Monday does not clear a driver to dispatch on Tuesday. The verified negative from the medical review officer does.
§382.301(b) has a narrow exception for a driver tested in a compliant program within the previous 30 days, but it requires the six verification items in §382.301(c)(1) — for a first hire, testing is simpler. Pre-employment alcohol testing is optional under §382.301(d).
Two Part 382 items ride along with the test:
- The random pool. Per §382.305(a), every driver must submit to random testing, and per §382.103(b) an employer who is also the only driver must already be in a pool of two or more. Add the new driver to your consortium before their first trip; the consortium post covers what a pool must actually deliver.
- The policy and the receipt. Per §382.601(a)(1), a copy of your drug-and-alcohol educational materials goes to "each driver subsequently hired," and per §382.601(d) the driver signs a statement certifying receipt, which you keep. If you have been a one-person operation, this is the moment you find out whether you have a written policy at all — the Part 382 policy post builds one.
Step 8 — the Clearinghouse full query: the second item you must have in hand
Per §382.701(a)(1), employers "must not employ a driver subject to controlled substances and alcohol testing under this part to perform a safety-sensitive function without first conducting a pre-employment query of the Clearinghouse." §382.701(a)(2) requires a full query, which releases the driver's record to you and requires the driver's specific consent. In practice the driver must be registered in the Clearinghouse — FMCSA's own FAQ says a driver "will need to be registered to provide electronic consent" for a full query, and "this includes all pre-employment queries" — and your query sits pending until they log in and consent. Ask the applicant to register at the interview, not the night before the first load.
Per §382.701(d), if the query shows a verified positive, adulterated or substituted test, an alcohol result of 0.04 or higher, a refusal, or an actual-knowledge report, the driver may not perform safety-sensitive functions unless the record also shows the return-to-duty process completed. A clean query clears the driver. A query that is still waiting on consent clears nothing.
Queries cost a flat $1.25 each, limited or full, per FMCSA's query plan page (read 2026-09-08), and a first-time employer buys a plan before querying. FMCSA notifies you of anything added to the record in the 30 days after your query (§382.701(c)), and the same query is owed on every driver every year from here on (§382.701(b)) — the Clearinghouse post covers the annual cycle.
Step 9 — the file assembles itself
If Steps 1 through 8 happened, the §391.51(b) driver qualification file is already built; you are just putting it in one place:
| DQF item — §391.51(b) | Produced in |
|---|---|
| (1) Application per §391.21 | Step 1 |
| (2) MVR from each licensing authority per §391.23(a)(1) | Step 3 |
| (3) Road test certificate, or the accepted §391.33 equivalent | Step 5 |
| (6) Medical certificate — or, for CDL holders, the CDLIS MVR showing medical status; plus (7) any variance documentation | Step 6 |
| (8) National Registry verification note, non-CDL drivers only | Step 6 |
Items (4) and (5), the annual MVR and review note, come due at the driver's first anniversary under §391.25. Everything from Step 4 goes in the separate §391.53 investigation history file; everything from Steps 7 and 8 goes in the confidential drug-and-alcohol records under §382.401. A DQF that contains a drug test result is the commonest self-inflicted finding: it proves the carrier does not know the files are different.
Retention: the DQF and the safety performance histories are each kept for the length of employment plus three years (§391.51(c), §391.53(c)).
The two things you must be holding
Before the first dispatch, the table at the top should read all-true, and two of its rows should be documents in your hand rather than requests you have sent: the verified negative pre-employment test result from the MRO or C/TPA, and the completed Clearinghouse full query with consent granted and the result reviewed. Everything else can be in flight inside its 30-day window. Those two cannot.
The second hire is easier, because the forms, the consortium, the Clearinghouse account and the file structure already exist. The first one is where the structure gets built — and where a new-entrant safety auditor, arriving in your first months of operation, will look first.
Where Roadworthy HQ fits
Roadworthy HQ is built around this sequence. Adding a driver opens a §391.51 checklist with every required item as a row, holds the driver as not cleared for dispatch until a negative pre-employment result is recorded, logs each Clearinghouse query with its annual re-query date, and files medical certificates with expiration alerts — so the first hire leaves an audit-ready file instead of a folder of good intentions. The free DQF Completeness Checker scores the file you have today; when you are ready to run the whole fleet from one place, start a 14-day free trial — no credit card required.
Related violation codes
The requirements covered above are cited as these violation codes in audits and roadside inspections:
- §391.21 — No or incomplete application for employment
- §391.23 — Previous-employer investigation not made
- §391.31 — Road test required
- §391.45 — Persons who must be medically examined
- §391.11 — Driver does not meet §391.11 qualifications
- §391.15 — Allowing a disqualified driver to operate a CMV
- §391.51 — Driver qualification file incomplete
- §382.301 — No pre-employment drug test
- §382.701 — Missing Clearinghouse pre-employment or annual query