What 392.2-SLLIT means in plain language
FMCSR 392.2-SLLIT prohibits you from operating a commercial motor vehicle when your physical or mental condition—whether from fatigue, illness, or any other cause—is so impaired that it makes driving unsafe. The regulation doesn't require you to be perfectly healthy; it requires that your ability to operate the vehicle safely is not compromised.
This is a judgment call made by the roadside inspector. They're not looking for a positive COVID test or a documented flu diagnosis. They're looking for visible signs: difficulty keeping your eyes open, slurred speech, confusion about where you are, inability to perform basic inspection tasks, or any behavior that suggests your alertness or judgment is substantially reduced. The bar is whether driving would be unsafe in your current condition.
If you're cited, it means an inspector observed behavior or statements indicating you were not fit to operate the vehicle at that moment. This is distinct from violations related to hours-of-service limits (which are about how long you've worked) or medical certificate requirements (which are about your underlying fitness). 392.2-SLLIT is about your immediate state at the time of inspection.
What our enforcement data actually shows
Across our 13 million+ inspection records, 392.2-SLLIT ranks #531 of 3,036 FMCSR codes by citation volume. Our inspection records show 2,040 all-time citations for this code, with 1,306 citations in the last 12 months and 294 in the last 90 days. This represents steady, moderate enforcement activity.
The out-of-service rate for 392.2-SLLIT is 0.0%—all 2,040 citations resulted in drivers being allowed to continue operating after citation. This contrasts sharply with the all-FMCSR average OOS rate of 31.4%. In practical terms: you will not be placed out of service on the roadside for this violation alone. The inspector will cite you and allow you to continue; the consequences come downstream through CSA scoring and potential carrier action.
The CSA severity weight is 8, placing it in the moderate range for serious violations. It signals to your carrier and regulators that your fitness to drive was questioned, which affects how your record is reviewed during audits and safety reviews.
Monthly trends show citation activity has been relatively stable over the last 12 months, ranging from 39 to 137 citations per month, with peaks in December 2025 and March 2026 (137 and 135 citations respectively).
Who gets cited most
Our data from the last 180 days shows Georgia leading with 125 citations, followed by Pennsylvania with 89 citations, and California with 59 citations. All three states maintain a 0.0% out-of-service rate, meaning no drivers were pulled from service in those jurisdictions for this code.
When we examine carriers, our inspection records show fleets such as Western Express Inc with 14 all-time citations and J B Hunt Transport Inc and Federal Express Corporation each with 12 citations. Swift Transportation Co of Arizona LLC follows with 10 citations. These numbers reflect the size and inspection exposure of large national carriers; they do not indicate systemic fitness problems at any single fleet.
How severe is this compared to similar codes
Within the same 392.2 family (Operating a CMV while ill or fatigued), there is significant variation. The parent code 392.2 itself accounts for 1,208,164 citations with a 0.8% OOS rate—roughly 600 times the citation volume of 392.2-SLLIT, but a similarly low out-of-service rate. Other variants like 392.2-SLLSR show 191,232 citations with a 0.1% OOS rate, and 392.2-SLLTCD shows 85,391 citations with a 0.0% OOS rate.
The consistent pattern across these peer codes is that illness and fatigue violations rarely trigger immediate removal from service. The enforcement focus is on documentation and corrective action at the carrier level rather than roadside incapacitation.
How to avoid it
Based on the co-occurring violations in our data, certain patterns emerge that drivers can address before and during pre-trip:
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Schedule rest strategically. Our inspection records show 20 shared inspections pairing 392.2-SLLIT with 392.2-SLLSR (another fatigue variant) in the last 90 days, indicating that sequential fatigue citations often reflect poor trip planning. Build rest days into your dispatch cycle; don't push through when you feel yourself fading.
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Verify your medical certificate before departure. We see 13 shared inspections pairing 392.2-SLLIT with 391.41APC (operating without a valid medical certificate). An expired or missing medical cert puts you at risk for this citation because inspectors are already scrutinizing your fitness. Keep your medical paperwork current and in the cab.
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Complete your pre-trip inspection thoroughly. 28 co-occurring citations link 392.2-SLLIT with 396.17C-PI (no proof of periodic inspection). Inspectors often cite fitness violations when they detect overall carelessness or inability to focus on inspection tasks. A sharp, deliberate pre-trip—checking brakes, lights, and tires methodically—demonstrates alertness.
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Use your logbook or ELD correctly. We recorded 8 shared inspections pairing this code with 395.24 (ELD form and manner violations). If your hours-of-service documentation is sloppy, inspectors become more suspicious about whether you're actually rested, even if you are. Consistent, accurate logging removes that doubt.
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If you're genuinely sick or exhausted, do not drive. Call your dispatcher, find safe parking, and rest or seek medical care. A citation and CSA points are the minimum consequence of driving impaired; the liability exposure if you cause a crash is catastrophic. This is one of the few violations where the safer choice—sitting still—is also the compliant choice.