CDL Scan Guides
A 3D envelope and document icon, representing a written request sent to a previous employer
#SCREENINGEditorial Team  ·  Updated July 24, 2026  ·  15 min read

The Safety Performance History Records Request: What 391.23 Actually Makes You Do

ON THIS PAGE11 sections
  1. What is a safety performance history records request?
  2. What exactly do you have to ask for?
  3. Which 30 days is which?
  4. How do you run the request, step by step?
  5. What do you do when a previous employer never answers?
  6. What rights does the driver have, and on what schedule?
  7. How may you use what comes back, and what protects you?
  8. What is on your checklist that is no longer a rule?
  9. How long do you keep it, and who can demand it?
  10. What the completed investigation still cannot tell you
  11. Frequently asked questions

49 CFR 391.23(a) reads like one duty and is two. Paragraph (a)(1) sends you to the driver’s licensing authority for a motor vehicle record. Paragraph (a)(2) sends you to every DOT-regulated employer the driver worked for in the preceding three years.

Different sources, different deadlines, and — the part that costs carriers at audit — different files. The MVR goes in the driver qualification file, listed at 391.51(b)(2). The safety performance history does not go there at all. It goes in the driver investigation history file under 49 CFR 391.53, which must be kept “in a secure location with controlled access” and, under 391.53(a)(1), may only be opened by people involved in the hiring decision or who control access to the data — plus your insurer, which under that same paragraph may see the file except the alcohol and controlled substances data.

That split is the most common structural error in this process. The rest of this article is how to run the request and prove you ran it.

What is a safety performance history records request?

It is the inquiry you send to a driver’s previous DOT-regulated employers under 391.23(a)(2), asking a narrow, rule-defined list of questions about the preceding three years. The regulation calls it an investigation, not a form, and the wording is deliberate.

391.23(c)(2) says it “may consist of personal interviews, telephone interviews, letters, or any other method for investigating that the carrier deems appropriate.” No mandated form, no mandated channel. Paragraph (h) adds that the release “may take any form that reasonably ensures confidentiality, including letter, facsimile, or e-mail.”

What the rule does mandate is documentation. Paragraph (c)(2) requires a written record for each previous employer contacted, or good faith efforts to do so, containing the employer’s name and address, the date contacted or the attempts made, and the information received. Then the sentence carriers skip: “Failures to contact a previous employer, or of them to provide the required safety performance history information, must be documented.” The non-answer is itself a record you are required to create.

The three-year window is statutory — FMCSA stated in 2004 that it “is specified in the HazMat Act. FMCSA therefore has no latitude” (69 FR 16684, 16688). And the application is what makes the request buildable: 391.21(b)(10) requires the applicant to list each employer for the prior three years with dates and reason for leaving, plus two checkboxes — whether he was subject to the FMCSRs there, and whether the job was safety-sensitive under part 40. Those checkboxes sort each employer into the (d) bucket or the (e) bucket. The further list at 391.21(b)(11) — for CDL applicants, the employers in the 7-year period preceding the 3 years in (b)(10), which is where the familiar “ten-year history” comes from — informs your judgment; it does not extend the investigation. Our walkthrough of the 391.21 application and the driver application checklist cover the form.

What exactly do you have to ask for?

Two different question sets, aimed at two different lists of employers.

Paragraph (d)Paragraph (e)
Who you askAll previous employers that employed the driver to operate a CMV in the previous three yearsAll previous DOT-regulated employers, any DOT mode, that employed the driver in a safety-sensitive function requiring part 40 testing
WindowPrevious three years; accident data measured from the date of the employment applicationThree years from the date of the employment application
What you ask forGeneral driver identification and employment verification information; accident data per 390.15(b)(1)Part 382 alcohol and controlled substances information
Driver’s written consentNot required by 391.23(f)(1)Required, meeting 40.321(b)
How it is obtainedDirect request to the employerClearinghouse for FMCSA-regulated employers since January 6, 2023, with two carve-outs

“All previous employers that employed the driver to operate a CMV” is narrower than “everyone on the application.” A warehouse job is not a paragraph (d) employer.

The accident data is six fields, and the threshold is high. Paragraph (d)(2) points at the accident register elements in 390.15(b)(1): date; city or town, or most near, and State; driver name; number of injuries; number of fatalities; and whether hazardous materials other than fuel from the vehicle’s own tanks were released. No narrative, no fault column. And “accident” is defined at 49 CFR 390.5 as a fatality, bodily injury where someone immediately receives medical treatment away from the scene, or disabling damage requiring a tow — expressly excluding occurrences involving only boarding and alighting, and only loading or unloading cargo.

Everything below that line is voluntary. Paragraph (d)(2)(ii) covers “any accidents the previous employer may wish to provide” under 390.15(b)(2) or its own internal minor-accident policy. Backing incidents, curb strikes, yard damage, a load shift that cost a customer money — none of it is mandatory disclosure. That is the largest structural blind spot in the mandatory record.

The drug and alcohol half mostly runs through the Clearinghouse now. Since January 6, 2023, 391.23(e)(4) requires employers subject to 382.701(a) to use the Clearinghouse to satisfy this section with respect to FMCSA-regulated employers. Two carve-outs still need a direct request: an applicant subject to follow-up testing who has not completed all of them — you request the plan from the previous employer under 40.25(b)(5) — and any previous employer regulated by a DOT mode other than FMCSA. Watch the window on that second one: the part 40 inquiry at 40.25(b) reaches employers “during any period during the two years before the date of the employee’s application or transfer.” Two years, against 391.23’s three.

One case does not end at a non-answer. Under (e)(2), if the previous employer does not know whether the driver completed a substance abuse professional’s referral, you must obtain that documentation directly from the driver.

Which 30 days is which?

There are four clocks here and only one of them is the 391.23 file deadline. Merging them is how carriers either panic about a driver who is fine to run, or run one who is not.

ClockRuleRuns fromWhat happens at the end
File placement, 30 days391.23(c)(1)Date the driver’s employment beginsReplies or documented good faith efforts must be in the driver investigation history file
Safety-sensitive bar, 30 days40.25(d)Date the employee first performed safety-sensitive functionsYou “must not permit the employee to perform safety-sensitive functions” absent the information or a documented good faith effort
Previous employer’s response, 30 days391.23(g)(1)Date the request is received by themTheir response is due, including a response confirming there is nothing to report
Clearinghouse pre-employment query382.701(a)(1)Before employmentYou “must not employ” the driver to perform a safety-sensitive function without first querying

Read the first two rows against each other. 391.23(c)(1) is a filing obligation — it says what must be in a folder on day 30 and prohibits nothing. 40.25(d) is a real prohibition on work. And (c)(1) says one thing in your favor: any period consumed by the driver exercising review, correction or rebuttal rights “is separate and apart from this 30-day requirement.”

If the driver has no DOT-regulated employment in the prior three years you are still not excused. Paragraph (c)(4) requires “documentation that no investigation was possible” in the file inside the same 30 days.

How do you run the request, step by step?

1

Sort the employment list into the (d) bucket and the (e) bucket

What you do: take the 391.21(b)(10) list off the application and mark each employer twice — did this employer employ him to operate a CMV, and was the job safety-sensitive under part 40 in any DOT mode. Those marks decide which questions each employer gets.

Status: smart.

The gotcha: a driver can be in the (e) bucket and not the (d) bucket — a transit, pipeline or rail safety-sensitive job with part 40 testing and no CMV. Those employers still owe you the paragraph (e) information, and because they are not FMCSA-regulated the Clearinghouse will not produce it.

2

Put the return routing inside the request

What you do: state where the previous employer should send the response — named person, address, fax or mailbox.

Status: required. Paragraph (d) says the request “must contain specific contact information on where the previous motor carrier employers should send the information requested.”

The gotcha: a request without it is deficient on the face of the rule, and it is the usual reason a response lands in a general inbox and is never filed.

3

What you do: obtain consent meeting 40.321(b) — a signed statement agreeing to release a particular piece of information to a particular, explicitly identified person or organization at a particular time.

Status: required for the paragraph (e) information under 391.23(f)(1). If the driver refuses you “must not permit the driver to operate a commercial motor vehicle for that motor carrier.” Refusal to consent to the Clearinghouse query is separately disqualifying under 391.23(f)(2) and 382.703(c).

The gotcha: 40.321(b) prohibits blanket releases outright — agreements to release “a category of information (e.g., all test results)” or to release to “a category of parties.” The all-purpose authorization on page four of most application packets is the thing that rule names. Note also what consent does not cover: the rule does not attach it to the paragraph (d) request, and 49 U.S.C. 508(c) says written authorization “shall not be required to obtain information on the motor vehicle driving record” of an employment candidate.

4

Give the driver the due process notice before you decide anything

What you do: notify drivers with DOT-regulated employment in the preceding three years, in writing, on the application form or another written document prior to any hiring decision, of three rights: to review information provided by previous employers; to have errors corrected by that employer and re-sent to you; and to attach a rebuttal where the two cannot agree.

Status: required — 391.23(i)(1), and independently 391.21(d), which also requires telling the applicant before submission that previous employers will be contacted.

The gotcha: “prior to any hiring decision” means a notice mailed with the offer letter, or in the decline packet, is late. It is also the hinge your statutory protection turns on.

5

Log every attempt at the moment you make it

What you do: record employer name and address, date contacted or attempts made, and what came back. Record non-answers the same way.

Status: required by 391.23(c)(2).

The gotcha: there is no magic number of attempts. Asked directly for examples of good faith efforts in 2004, FMCSA answered that the term “has been used in the FMCSRs for a number of years” and that its best guidance was for employers to “document in the driver investigation history file their efforts to comply” (69 FR 16684, 16690). Anyone quoting you a rule of three calls is inventing it.

6

File it in the 391.53 file, not the DQ file

What you do: put the responses, or the documented good faith efforts, plus the driver’s written authorization for the alcohol and controlled substances inquiry, into the driver investigation history file. Those two things are its entire required contents under 391.53(b).

Status: required.

The gotcha: the DQ file “may be combined with his/her personnel file” under 391.51(a). This one may not be treated that way — 391.53(a)(1) limits access to people involved in the hiring decision or who control access to the data (your insurer may see it, minus the alcohol and controlled substances data), and (a)(2) restricts use to the hiring decision. One folder per driver with everything in it collapses a restricted file into an unrestricted one. Our DQ file checklist covers the other side of that line.

What do you do when a previous employer never answers?

Document the non-answer, keep working the other employers, and treat the 386.12 referral as a document for your file rather than a way to force a response.

Start with what they owed you. 391.23(g)(1) requires a response within 30 days after the request is received, and states that where there is nothing to report the previous employer is “nonetheless required to send a response confirming the non-existence of any such data, including the driver identification information and dates of employment.” Silence is not a permissible answer.

Paragraph (c)(3) gives you a route: prospective employers “should report failures of previous employers to respond to an investigation to the FMCSA and use the complaint procedures specified at § 386.12.” Note the modal — reporting is advisory. The next sentence is not: “Keep a copy of the reports in the driver investigation history file as part of documenting a good faith effort.” FMCSA said the same in the 2004 preamble, listing “documentation of having reported previous employers to FMCSA using the procedures at Sec. 386.12” among the ways an employer documents its efforts to comply (69 FR 16684, 16690).

Before building a workflow on it, read what 386.12(a)(1) is. It covers an allegation of “a substantial violation,” defined as “one which could reasonably lead to, or has resulted in, serious personal injury or death,” filed no later than 90 days after the event, with the National Consumer Complaint Database or any FMCSA Division Administrator, signed, and naming the specific provisions believed violated. Whether a routine non-response clears that bar is not settled in any source. Use the mechanism; do not promise anyone an outcome.

FMCSA has been candid that gaps here are unsolved: “the problem with possible gaps in employment history based on this process is well known. It includes former employers that have gone out of business, as well as those not listed by the driver applicant when applying for a job” (69 FR 16684, 16688).

What rights does the driver have, and on what schedule?

Three rights, and most of the deadlines belong to the previous employer rather than to you.

EventWho actsDeadlineRule
Driver requests to review the investigative informationDriverAny time, including at application, up to 30 days after being employed or notified of denial391.23(i)(2)
You provide itYou5 business days from the written request; if the data has not arrived, the 5 days start when it does391.23(i)(2)
Driver does not collect the records30 days after you make them available, then you may treat the request as waived391.23(i)(2)
Driver requests a correctionPrevious employer15 days to correct and forward, or to notify the driver it will not391.23(j)(1)–(2)
Driver submits a rebuttalPrevious employer5 business days to forward a copy to you and append it391.23(j)(4)

Three details settle most arguments. Correction requests do not come to you — (j)(1) sends them to the previous employer that provided the record, which is separately required by (g)(3) to supply contact information for exactly that purpose. A correction propagates forward: the previous employer must retain the corrected version and give it to subsequent prospective employers. A rebuttal rides along for the duration of the three-year data retention requirement, and under (j)(5) a driver may rebut without first requesting a correction. If the previous employer refuses either, the driver has his own 386.12 route under (j)(6).

How may you use what comes back, and what protects you?

Only for the hiring decision — and the legal shield is conditional on you having followed the procedure.

391.23(k)(1) limits use of the (d) and (e) information to “deciding whether to hire the driver.” (k)(2) requires you, your agents and your insurers to protect it from anyone not directly involved in that decision, and bars you from giving the alcohol and controlled substances information to your own insurer. The mirror restriction binds the previous employer under (h).

Then the protection, and its limit. Paragraph (l)(1) bars actions for defamation, invasion of privacy, or interference with a contract “based on the furnishing or use of information in accordance with this section.” Paragraph (l)(2) takes it away from “persons who knowingly furnish false information, or who are not in compliance with the procedures specified for these investigations.” And 49 U.S.C. 508(b)(1) conditions the shield on the carrier having complied with the Secretary’s regulations, “including the requirement that the individual who is the subject of the records be afforded a reasonable opportunity to review and comment on the records.”

So the Step 4 notice is not paperwork. Skip it, or use the information for anything other than the hiring decision, and what you lose is the immunity. Federal law does preempt state and local law penalizing the furnishing or use of these records (508(c)) — with the same “in accordance with regulations issued by the Secretary” condition attached.

What is on your checklist that is no longer a rule?

The annual certificate or list of violations under 391.27. Rescinded effective May 9, 2022 as duplicative of the annual MVR inquiry; the section now reads [Reserved] (87 FR 13192). Many DQ-file audit templates still list it. The same final rule notes that eliminating 391.27 “does not preclude employers from requiring their drivers to provide a list of their traffic convictions as a condition of employment” — keep it as company policy if you want, but do not carry it into an audit as a regulation.

The Pre-Employment Screening Program does not discharge this duty either. 49 U.S.C. 31150(c) makes PSP non-mandatory and limits it to preemployment assessment, and 31150(a) limits its contents to crash reports, inspection reports with no driver-related violations, and serious driver-related violation inspection reports. There is no previous-employer response in it at all. Our guide to reading a PSP report covers what it does carry, the MVR check article covers the (a)(1) half of this section, and how CSA scoring works covers where these violations land on your own DOT number.

How long do you keep it, and who can demand it?

For a driver you hire: the length of employment plus three years. For an applicant you do not hire, 391.53 is silent. That silence is deliberate — FMCSA dropped a proposed one-year retention requirement for non-hired applicants in 2004, reasoning that “if the driver is not hired, it is not relevant to safety concerns whether the prospective employer performed the investigations and inquiries required by Sec. 391.23” (69 FR 16684, 16690).

Do not merge the periods, because they differ:

RecordRetentionRule
Safety performance histories received, driver who is hiredLength of employment plus 3 years391.53(c)
Previous employer’s log of each request and response1 year391.23(g)(4)
Rebuttal appended to a driver’s informationDuration of the 3-year data retention requirement391.23(j)(4)(ii)
Clearinghouse query records3 years382.701(e)
Driver’s consent to query the Clearinghouse3 years from the date of the last query382.703(a)

391.53(d) is what makes this file an audit target: you must make everything in it available to an authorized FMCSA representative or special agent, an authorized State or local enforcement representative, or an authorized third party, “upon request or as part of any inquiry within the time period specified by the requesting representative.” Their window, not yours.

One caution on penalties. Civil penalty amounts are inflation-adjusted, and the part 386 penalty schedules state that the adjusted figures in them supersede the corresponding amounts printed in title 49 of the U.S. Code. Recordkeeping and other FMCSR violations — the category a botched investigation file falls into — sit in appendix B to part 386; appendix A covers violations of notices and orders. Any dollar figure you find in an article goes stale; pull the current one from the appendix itself and FMCSA’s most recent adjustment rule.

What the completed investigation still cannot tell you

It cannot tell you how the driver behaved. Run all six steps correctly and what you hold is identification data, dates of employment, six accident-register fields above a tow-away threshold, and a Clearinghouse result. That is the whole mandatory list.

Nothing in the request asks whether he finished the contract, showed up, answered dispatch, or how the equipment came back. The minor accident detail that would fill part of that gap is expressly voluntary. A previous employer that wants to say nothing beyond the minimum can comply fully and tell you nothing you did not already know from the application. And a meaningful share of the time you will not get even the minimum: the employer folded, ignored the letter, or was never listed. Your file will be compliant and your picture will be empty — the same blindness behind the true cost of a bad driver hire and the first 24 hours of an abandonment.

That gap is what a peer-written behavioral layer is built for. On cdlscan, carriers write reviews of drivers they actually employed, so observations that never became a DOT-recordable accident or a Clearinghouse entry — reliability, communication, condition of returned equipment, whether the driver finished what he started — still leave a trace tied to a period of employment. Our overview of how carrier-written driver reviews work covers the format, and the comparison with what carriers see in a DAC report covers the commercial employment-history side.

Say the boundary plainly, because it is not a formality: this is an additional layer on top of the mandatory record, never a substitute for any part of it. The (a)(1) MVR inquiry, the (a)(2) safety performance history investigation, the Clearinghouse query and the 391.53 file are legally required and nothing here replaces one of them. Run them exactly as written, then add whatever helps you read the result. If you intend to rely on third-party information about a candidate as a factor in a hiring decision, ask the provider which category of information they consider it under the Fair Credit Reporting Act and confirm the resulting obligations with your own counsel.

Frequently asked questions

Does the safety performance history go in the driver qualification file?

No. 391.51(b) lists eight items, (b)(1) through (b)(8), and this is not among them — the only output of the 391.23(a) inquiries that lands in the DQ file is the motor vehicle record under (a)(1). (The DQ file also holds the medical certification records and verification notes that 391.23(m) requires, at 391.51(b)(6) and (b)(8).) Everything from the previous-employer investigation goes in the 391.53 driver investigation history file, which must be kept in a secure location with controlled access.

Do I have to finish the investigation within 30 days of hire?

No. 391.23(c)(1) requires the replies or documentation of good faith efforts to be placed in the driver investigation history file within 30 days of the date employment begins. A carrier holding nothing but a complete attempt log is compliant; a carrier whose replies arrived but are sitting in someone’s inbox on day 31 is not.

Can the driver drive while I am waiting for previous employers to respond?

That is answered by other rules, not by 391.23(c)(1), which sets a filing deadline rather than a driving prohibition. Two gates are real: 382.701(a)(1) bars employing a driver to perform a safety-sensitive function without first running the Clearinghouse pre-employment query, and 40.25(d) bars permitting safety-sensitive functions more than 30 days after the employee first performed them unless you have the part 40 information or a documented good faith effort to obtain it.

How many attempts count as a good faith effort?

No number appears in 391.23, 391.53 or part 40. FMCSA was asked for examples in the 2004 rulemaking and declined to give a checklist, saying its best guidance was that employers document their efforts in the driver investigation history file. Any specific count you have been told is somebody’s internal policy.

Do I need the driver’s signed consent to send the request?

For the paragraph (e) drug and alcohol information, yes — 391.23(f)(1) requires consent meeting 40.321(b), which prohibits blanket releases. For the paragraph (d) identification, employment verification and accident information the regulation imposes no consent condition, and 49 U.S.C. 508(c) states written authorization is not required to obtain the driving record of an employment candidate.

Does a previous employer have to answer if there is nothing to report?

Yes. 391.23(g)(1) requires a response within 30 days after the request is received and states that with no information to report the previous employer is “nonetheless required to send a response confirming the non-existence of any such data, including the driver identification information and dates of employment.”

Can I send the request by email?

Yes. 391.23(c)(2) permits any method the carrier deems appropriate, and (h) permits “letter, facsimile, or e-mail” so long as confidentiality is reasonably ensured. Nothing requires certified mail, delivery confirmation, letterhead or any particular FMCSA form.

Why does 391.23 still print a limit about accidents before April 29, 2003?

Because paragraph (g)(5) is a spent transition provision that was never removed from the text. It reads “Until May 1, 2006, carriers need only provide information for accidents that occurred after April 29, 2003.” That date has passed and it has no current effect. Do not cite it as a limitation on what a previous employer owes you today.


General compliance information for motor carrier hiring and safety staff, not legal advice. The regulatory text and preamble language cited here were checked against the CFR on law.cornell.edu and govinfo.gov and against the final rules on federalregister.gov in July 2026. Federal rules and civil penalty amounts change, so verify the current text of any section on ecfr.gov before building policy on it. Last reviewed 2026-07.