What 49 CFR 391.41 says, word for word
The standard requires a driver to have no established medical history or clinical diagnosis of a respiratory dysfunction likely to interfere with the ability to control and drive a commercial motor vehicle safely. Sleep apnea is not mentioned.
Part 391 of Title 49 sets the physical qualifications for commercial drivers. Section 391.41(a)(1)(i) requires a driver to be medically certified as physically qualified, and 391.41(b) lists the thirteen conditions the examiner must consider. The respiratory item, (b)(5), reads in full: “Has no established medical history or clinical diagnosis of a respiratory dysfunction likely to interfere with his/her ability to control and drive a commercial motor vehicle safely.” That sentence is the entire federal text a sleep apnea decision rests on. Two other rules shape how it is applied. Section 391.43(a) requires that the examination be performed by a medical examiner listed on the National Registry of Certified Medical Examiners, and 391.43(c)(1) requires that examiner to be knowledgeable of the medical advisory criteria FMCSA prepares as guidelines to aid the qualification determination. The examiner records the exam on Form MCSA-5875, the Medical Examination Report, issues Form MCSA-5876, the Medical Examiner's Certificate, and keeps the records for at least 3 years.
Why drivers keep hearing about a new sleep apnea law
Because FMCSA came close to writing one and then stepped back. The 2016 rulemaking was withdrawn on August 8, 2017, and the 2015 examiner bulletin that had filled the gap was rescinded on January 22, 2024.
FMCSA's advisory criteria have mentioned sleep apnea since 2000, listing it among conditions that “interfere with oxygen exchange and may result in incapacitation,” alongside emphysema, chronic asthma, and chronic bronchitis, and telling examiners that a driver with such a dysfunction “must be referred to a specialist for further evaluation and therapy.” In January 2015 the agency issued a bulletin to medical examiners that called obstructive sleep apnea a respiratory dysfunction “when there is a determination that it is likely to interfere with the driver's ability to operate safely because of the severity of the case,” while stating that its standards and advisory criteria “do not provide OSA screening, diagnosis or treatment guidelines.” On March 10, 2016, FMCSA and the Federal Railroad Administration published an advance notice of proposed rulemaking on moderate-to-severe obstructive sleep apnea among safety-sensitive workers in highway and rail transportation. On August 8, 2017, after more than 700 comments, the agencies withdrew it and wrote that they had “determined not to issue a notice of proposed rulemaking at this time.” The same notice reminded examiners that “there are no FMCSA rules or other regulatory guidance beyond what is referenced in this paragraph above with guidelines for screening, diagnosis, and treatment of OSA in CMV drivers,” and that certification determinations “are made by the examiners based on the examiner's medical judgment rather than a Federal regulation or requirement.” FMCSA then rescinded the 2015 bulletin itself on January 22, 2024, and nothing has replaced it. When a website or a trainer refers to the new DOT sleep apnea law, they are describing one of these withdrawn or rescinded documents, or one examiner's practice.
What makes an examiner refer a driver for a sleep study
Reported sleepiness, a sleep-related crash, or a body mass index and risk-factor profile that matches the Medical Review Board's August 2016 recommendations. The examiner decides; the thresholds are guidance, not regulation.
The Medical Review Board is the panel of physicians that advises FMCSA on medical standards. After its meeting on August 22 and 23, 2016, it sent the agency a letter report on sleep apnea. It recommended immediate disqualification and referral for two groups: “Individuals who have admitted fatigue or sleepiness during the wake period” and “Individuals who have been involved in a sleep-related motor vehicle crash or accident or near crash.” It recommended a diagnostic sleep evaluation for individuals with a BMI of 40 or higher, and for individuals with a BMI of 33 to 39 who also have at least three of the following: hypertension, treated or untreated; type 2 diabetes, treated or untreated; a history of stroke, coronary artery disease, or arrhythmias; micrognathia or retrognathia; loud snoring; witnessed apneas; a small airway, meaning Mallampati class III or IV; a neck size over 17 inches in men or 15.5 inches in women; untreated hypothyroidism; age 42 and above; or being male or a post-menopausal female. It recommended a repeat study when “one or more additional risk factors” appear beyond those that required the original study, or after “a 10 percent increase in weight.” These are the numbers most examiners work from. In its 2017 withdrawal notice FMCSA wrote that it would consider updating its 2015 bulletin using “the updated August 2016 Medical Review Board recommendations as a basis.” It never did. FMCSA's own driver page states that almost one-third, 28 percent, of commercial truck drivers have mild to severe sleep apnea, and says that “while FMCSA regulations do not specifically address sleep apnea,” the disqualifying level is moderate to severe, and “the medical examiner must qualify and determine a driver's medical fitness for duty.”
Home sleep apnea test or in-lab study: what examiners accept
The Medical Review Board recommended in-laboratory polysomnography as preferred, with at-home testing acceptable when it ensures chain of custody, and every study interpreted by a board-certified sleep specialist.
Two documents shape this. The Medical Review Board's 2016 report says “Methods of diagnosis include in-laboratory polysomnography (which is preferred), as well as at-home sleep apnea testing that ensures chain of custody,” and that “All sleep studies must be interpreted by a board-certified sleep specialist.” Chain of custody means the testing service can document that the driver named on the report is the person who wore the device. Separately, the American Academy of Sleep Medicine's 2017 clinical practice guideline, written for clinicians rather than examiners, recommends either polysomnography or a home sleep apnea test with a technically adequate device for uncomplicated adults at increased risk of moderate-to-severe obstructive sleep apnea, and polysomnography rather than home testing for patients with significant cardiorespiratory disease, potential respiratory muscle weakness from a neuromuscular condition, awake hypoventilation or suspected sleep-related hypoventilation, chronic opioid use, a history of stroke, or severe insomnia. Which test a driver gets is a decision between the ordering clinician and the driver, and whether a given report satisfies the examiner is the examiner's call. Neither document lists overnight oximetry alone as a diagnostic method. Our guides to home sleep apnea testing and to what happens during polysomnography explain what each study records.
What a CPAP compliance report must show
The standard examiners use is at least 30 consecutive days of PAP data showing 4 or more hours of use on at least 70 percent of nights, with no reported excessive sleepiness. It comes from the Medical Review Board, and Medicare's coverage policy uses the same numbers.
The Medical Review Board recommended that a driver with sleep apnea be certified for up to 1 year once three things are true: the driver documents PAP use “for a time period no less than 30 consecutive days,” the PAP records “demonstrate at least 4 hours per night use on 70 percent of nights,” which the board called the minimum compliance standard, and the driver “does not report excessive sleepiness during the major wake period.” PAP devices record usage and residual events to a memory card or a cloud account, and the treating clinic or equipment supplier can print the report. The board also described what happens when compliance falls short: a driver may be given 30-day, then 60-day, then 90-day certifications while adherence is rebuilt, and “If the driver cannot produce 30 days of consecutive PAP use data, the driver must be disqualified and cannot be re-certified until he or she is able to provide 30 days of compliant PAP use data.” Medicare's coverage policy for PAP devices, Local Coverage Determination L33718, defines adherence the same way: use of 4 or more hours per night on 70 percent of nights during a consecutive 30-day period anytime during the first 3 months of therapy, confirmed at a face-to-face re-evaluation no sooner than the 31st day and no later than the 91st day. That is an insurance coverage rule, not an FMCSA rule, but it is why the same numbers appear on the report a supplier prints. The evidence behind the threshold comes from drivers. A 2016 study in the journal Sleep followed 1,613 truck drivers with obstructive sleep apnea at a large carrier, with 403 drivers who screened negative and 2,016 matched controls. Drivers who never used their auto-adjusting PAP had a preventable DOT-reportable crash rate about fivefold greater than the controls, an incidence rate ratio of 4.97 with a 95 percent confidence interval of 2.09 to 10.63. Drivers with full adherence, defined as a 4-hour nightly mean on at least 70 percent of nights, had a rate ratio of 1.02, statistically the same as drivers without sleep apnea.
How long a medical card can run with sleep apnea
Federal rules cap any certificate at 24 months. The Medical Review Board recommended no more than 1 year for a driver with a diagnosis, a 90-day conditional card while a study is pending, and the regulation gives a pending exam 45 days.
Section 391.45(b) requires a new examination for any driver who has not been medically examined and certified during the preceding 24 months, so no certificate runs longer than 2 years, and the examiner may certify for a shorter period whenever a condition warrants closer follow-up. For sleep apnea the Medical Review Board recommended that examiners “cannot issue a medical card for more than 1 year to a driver with an established diagnosis of OSA, regardless of severity.” It recommended that “A driver determined to be at risk for OSA based on Body Mass Index (BMI) (with or without risk factors) may be certified for 90 days pending sleep study and treatment,” and it defined effective treatment as “the resolution of moderate to severe OSA to mild OSA or better, as determined by a board-certified sleep specialist.” The regulation supplies one more clock. Under 391.43(g)(4), when the examiner decides the determination “should be delayed to receive additional information or to conduct further examination,” the examiner must tell the driver “that the additional information must be provided or the further examination completed within 45 days, and that the pending status of the examination will be reported to FMCSA.” Since June 23, 2025, under 391.43(g)(3), an examiner who finds a driver not physically qualified must inform the driver, report that finding to FMCSA, and “All medical examiner's certificates previously issued to the person are not valid.” In practice a driver with treated sleep apnea should expect a 1-year card, a request for a fresh compliance report at each exam, and a 2-year card only if the examiner chooses to depart from the board's recommendation.
Oral appliances, surgery, and treatments other than CPAP
The Medical Review Board recommended that drivers try PAP first unless a board-certified sleep specialist finds it intolerable, and that certification after any alternative treatment rest on a repeat sleep study showing moderate-to-severe apnea has resolved.
FMCSA's regulations do not name any treatment. The rescinded 2015 bulletin listed options “from weight loss to dental appliances to Continuous Positive Airway Pressure (CPAP) therapy, and combinations of these treatments,” and said the agency “believes the issue of treatment is best left to the treating healthcare professional and the driver.” The 2016 Medical Review Board report went further and is what examiners tend to apply. It called PAP therapy “the preferred OSA treatment.” For oral appliances, it recommended that drivers “should try PAP therapy before oral appliance therapy, unless a board-certified sleep specialist has determined that an alternative therapy such as PAP is intolerable,” and that certification requires “A repeat sleep study shows resolution of moderate to severe OSA.” For bariatric surgery, oropharyngeal or facial bone surgery, and tracheostomy, it described the same shape: certification after surgery through documented PAP or oral device compliance, followed by a repeat sleep study showing no moderate-to-severe OSA. Hypoglossal nerve stimulation, an implanted treatment, is not mentioned in the report; a driver treated that way relies on the treating clinician's documentation, a repeat study, and the examiner's judgment. This page does not recommend one treatment over another. Our guides to oral appliances versus CPAP and to candidacy for hypoglossal nerve stimulation describe how those treatments work and what a repeat study measures.
Why blood pressure, diabetes, and weight come up at the same exam
Hypertension and diabetes are separate items in the driver standards and also count as sleep apnea risk factors in the Medical Review Board's list, so one exam often raises all three.
Section 391.41(b)(6) sets a separate standard for high blood pressure, and 391.41(b)(3) addresses diabetes, so an examiner is already asking about both before sleep comes up. The Medical Review Board's referral list then counts hypertension, treated or untreated, and type 2 diabetes, treated or untreated, among the risk factors that, with a BMI of 33 to 39, point toward a sleep study, and it names a 10 percent weight gain as a reason to retest. Untreated sleep apnea and blood pressure that stays high despite treatment often travel together, which is why our resistant hypertension guide sits next to this one. Body mass index is a screening number, not a diagnosis; our guide to BMI versus body composition explains what it can and cannot tell an examiner. None of this means a driver must lose weight to be certified, and this page does not recommend any weight-loss method. The board tied certification after weight-loss surgery to a repeat sleep study, not to the number on the scale, which is the same standard it applied to every other treatment.
What this page is and is not
It is an explanation of the rules and recommendations, written for drivers and the people who advise them. It is not a DOT physical, a certification decision, or medical advice about your case.
Modern Sleep & Metabolic Institute does not perform DOT physicals and is not a certified medical examiner. Nothing here can qualify, disqualify, or certify a driver, and nothing here tells you whether you have sleep apnea or which test or treatment you should choose. Those decisions belong to your examiner and your own clinicians. If you want a clinician for the sleep questions this page raises, our Find care page explains what is open right now: general inquiries are open, and patient matching is not open yet. That page carries a general inquiry form only. It does not collect symptoms, medications, or sleep study results, and it should not be used to send them. Questions about what a sleep study costs, which depends on the test type, the insurer, and whether an employer requires a particular vendor, are covered in our cost and insurance guide.
Appointment checklist
Documents examiners commonly ask a driver with sleep apnea to bring
None of these are required by regulation. Each one answers a question the Medical Review Board's recommendations tell examiners to ask, so arriving with them tends to shorten a pending status rather than create one.
- 1
The sleep study report
The full report, not a summary letter, showing the apnea-hypopnea index, the study date, the test type, and the board-certified sleep specialist who interpreted it.
- 2
The PAP compliance download
At least 30 consecutive days, and the full period since the last exam if the examiner asks, showing hours per night, the percentage of nights over 4 hours, and residual events.
- 3
A note from the treating clinician
Stating the diagnosis, the treatment in use, and whether the clinician considers it effective. For treatment other than PAP, the repeat sleep study that shows moderate-to-severe apnea has resolved.
- 4
The previous Medical Examiner's Certificate
So the examiner can see the last certification period and any conditions attached to it.
Common questions
Questions patients ask first
Can you fail a DOT physical for sleep apnea?
Yes, but not automatically. The regulation asks whether a respiratory dysfunction is likely to interfere with safe driving. An examiner who finds moderate-to-severe sleep apnea that is untreated, or treated without proof of use, can find the driver not physically qualified. A driver with a diagnosis who documents effective treatment is routinely certified, usually for 1 year at a time.
Does sleep apnea disqualify you from a DOT medical card?
A diagnosis by itself does not. FMCSA's driver page says the disqualifying level is moderate to severe sleep apnea that interferes with safe driving. Before it was rescinded, the 2015 bulletin said the agency “does not require that these drivers be considered unfit to continue their driving careers; only that the medical examiner make a determination whether they need to be evaluated and, if warranted, demonstrate they are managing their OSA.” Mild sleep apnea, an apnea-hypopnea index of 5 to 14, is not the disqualifying level, though the Medical Review Board still recommended a card of no more than 1 year for any established diagnosis.
What is the required CPAP compliance report for a DOT physical?
No regulation specifies one. The report examiners ask for follows the Medical Review Board's recommendation: at least 30 consecutive days of PAP data showing 4 or more hours of use on 70 percent of nights, alongside no reported excessive sleepiness. The data comes from the device itself, and the treating clinic or equipment supplier can print it for the period the examiner wants.
Does DOT know if I have sleep apnea?
The exam begins with a driver health history on Form MCSA-5875 that the driver signs as accurate and complete, and it asks about sleep disorders and related symptoms. Since June 23, 2025, an examiner who finds a driver not qualified reports that finding to FMCSA, and a pending determination is reported as pending under 391.43(g)(4). This page cannot tell you what a particular employer or state has on file.
Can I lose my CDL because of sleep apnea?
A commercial driver's license is issued by the state, and an interstate driver must also hold a valid Medical Examiner's Certificate. A not-qualified finding is reported to FMCSA and invalidates prior certificates under 391.43(g)(3), and the state licensing agency acts on medical certification status under its own rules. Documented, effective treatment restores eligibility for certification.
Can you get a CDL with a CPAP?
Yes. Using PAP is evidence of treatment, not a barrier. The Medical Review Board called PAP the preferred treatment and built its certification recommendations around documented use.
Can you get a 2-year DOT medical card with sleep apnea?
The regulation allows up to 24 months, but the Medical Review Board recommended no more than 1 year for any driver with a diagnosis, regardless of severity, and many examiners follow that. Expect a 1-year card with a compliance report at each renewal.
Is there a new law about DOT physicals and sleep apnea?
No. The last federal actions were a withdrawal and a rescission: FMCSA and the Federal Railroad Administration ended their sleep apnea rulemaking on August 8, 2017, and FMCSA rescinded its 2015 examiner bulletin on January 22, 2024. The regulation drivers are examined under, 49 CFR 391.41(b)(5), has not been changed to name sleep apnea.
How do you pass a DOT physical if you have sleep apnea?
Examiners look for three things: a sleep study interpreted by a board-certified sleep specialist, proof that the prescribed treatment is being used, most often 30 or more consecutive days of PAP data at 4 or more hours on 70 percent of nights, and no reported sleepiness during waking hours. Bring the study and the report. The health history on Form MCSA-5875 is signed as accurate and complete, and there is no legitimate way around it.
Can losing 20 pounds cure sleep apnea?
Weight loss lowers severity for some people and not others, and no fixed number of pounds predicts the result. For certification, what matters is a repeat sleep study: the Medical Review Board tied re-certification after weight-loss surgery to a study showing no moderate-to-severe apnea, and it recommended a new study after a 10 percent weight gain. The treating clinician, not the scale, answers this question.
What does a sleep study cost for a DOT physical?
It depends on the test type, the insurer, and whether an employer requires a particular testing vendor. Home testing and in-lab polysomnography are priced differently, and Medicare and most insurers cover a diagnostic study when a clinician orders it for suspected sleep apnea. Our sleep study cost and insurance guide walks through the questions to ask before scheduling.
Authoritative sources
Review the public guidance
- 49 CFR 391.41, Physical qualifications for drivers (eCFR)
- 49 CFR 391.43, Medical examination; certificate of physical examination (eCFR)
- 49 CFR 391.45, Persons who must be medically examined and certified (eCFR)
- FMCSA and FRA, Evaluation of Safety Sensitive Personnel for Moderate-to-Severe Obstructive Sleep Apnea: withdrawal of ANPRM, 82 FR 37038 (August 8, 2017)
- FMCSA and FRA, advance notice of proposed rulemaking on obstructive sleep apnea, 81 FR 12642 (March 10, 2016)
- FMCSA, Bulletin to Medical Examiners and Training Organizations Regarding Obstructive Sleep Apnea (January 2015; rescinded January 22, 2024)
- FMCSA Medical Review Board, Task 16-01 Letter Report on obstructive sleep apnea (August 26, 2016)
- FMCSA, Driving When You Have Sleep Apnea
- Burks SV et al., Nonadherence with employer-mandated sleep apnea treatment and increased risk of serious truck crashes, Sleep 2016 (PMC4835318)
- Kapur VK et al., Clinical practice guideline for diagnostic testing for adult obstructive sleep apnea, AASM 2017 (PMC5337595)
- CMS Local Coverage Determination L33718, Positive Airway Pressure Devices for the Treatment of Obstructive Sleep Apnea
- Hartenbaum N et al., Sleep apnea and commercial motor vehicle operators: statement from the joint task force, 2006 (PubMed 16985410)
- Talmage JB et al., Consensus criteria for screening commercial drivers for obstructive sleep apnea, 2008 (PubMed 18332782)
Medically reviewed by Domenico Savatta, MD, FACS on September 13, 2026. Source links support education, not a personal recommendation.