What 392.2-RRUC means in plain language
FMSCR 392.2-RRUC prohibits you from operating a commercial motor vehicle when your ability to drive safely is impaired. That impairment can come from fatigue, illness, medication side effects, or any other condition that reduces your alertness or judgment. The key word is "unsafe"—an inspector will cite this code only if they observe signs that your condition genuinely compromises your ability to operate the vehicle.
This is fundamentally different from a tired driver who pulls over to rest. The regulation targets drivers who are actively operating a CMV in a compromised state. Inspectors look for visible clues: erratic steering, drooping eyelids, slurred speech, confusion about route or documents, or admission that you're unwell or running on fumes.
Illness covers everything from a fever and cough to migraines, dizziness, or pain severe enough to distract you. Fatigue is the most common trigger—missing sleep, circadian disruption from irregular schedules, or driving beyond your safe limits.
What our enforcement data actually shows
Across our inspection database of 13 million records, 392.2-RRUC is cited rarely: 22 citations all-time, 10 in the last 12 months, and zero in the last 90 days. None of those 22 citations resulted in an out-of-service order, giving this code a 0.0% OOS rate—well below the all-FMCSR average of 31.4%.
Ranked 1,898th out of 3,036 FMCSR codes by citation volume, 392.2-RRUC appears to be enforced selectively. When it is cited, it does not trigger removal from service. The CSA severity weight is 8, moderate within the FMCSR scale, meaning it will affect your safety record but is not in the highest-consequence tier.
The scarcity of recent citations (zero in 90 days) may reflect either improved driver awareness or the difficulty inspectors face in documenting impairment without a roadside test. Either way, the data shows this is not a high-volume enforcement action.
Who gets cited most
Our inspection records show citations concentrated in three states over the last 180 days:
- Georgia: 3 citations, 0 OOS (0.0% rate)
- California: 1 citation, 0 OOS (0.0% rate)
- Tennessee: 1 citation, 0 OOS (0.0% rate)
OOS rates are identical across all three states at 0.0%, indicating consistency in how this code is enforced and resolved nationally.
Across all-time data, no single carrier dominates citations for this code. The top carriers in our records—Swift Transportation, Atlas Van Lines, Brown Trucking, Hansen & Adkins Auto Transport, ATS Specialized, Oblewski Trucking, Cadence Premier Cargo, Radter Inc., Mondelez Global, and Werner Enterprises—each have only one citation. This distribution suggests 392.2-RRUC is broadly dispersed rather than concentrated in fleets with systemic fatigue or health-screening issues.
How severe is this compared to similar codes
The parent code 392.2 (Operating a CMV while ill or fatigued, all variants) accounts for over 1.8 million citations in our database. Within that family, 392.2-RRUC is one of the most narrowly defined subcodes.
Compare the enforcement patterns:
- 392.2 (parent, all variants): 1,208,164 citations, 0.8% OOS rate
- 392.2-SLLSR: 191,232 citations, 0.1% OOS rate
- 392.2RG: 96,652 citations, 0.1% OOS rate
392.2-RRUC sits at the far low end of that spectrum by volume, but its OOS rate (0.0%) is aligned with most peer codes, suggesting the regulation is rarely enforced to the point of removal from service. When it is cited, you typically remain in service to continue your trip after remediation (rest, medical clearance, or route adjustment).
How to avoid it
Fatigue and illness prevention is your first line of defense. Here are concrete actions you can take:
-
Log your sleep: Maintain a consistent sleep schedule and aim for 7–8 hours before long hauls. Irregular schedules compound fatigue; if your carrier allows, negotiate consistent home time.
-
Know your limits: Plan routes to avoid driving during your body's low-alertness windows (typically 2–4 a.m. and early afternoon for most drivers). Take breaks every 2 hours, even if not legally required; a 15-minute power nap or walk cuts crash risk sharply.
-
Report illness before dispatch: If you're running a fever, experiencing vertigo, or on new medication with dizziness warnings, inform your dispatcher and stay home. No run is worth an unsafe-operation citation or, worse, a crash.
-
Pre-trip health check: Ask yourself: Can I see, hear, and think clearly? Am I in pain that will distract me? Am I on medication that causes drowsiness? If the answer to any is "no" or "maybe," delay your start.
-
Hydrate and fuel properly: Dehydration and low blood sugar mimic fatigue. Keep water and protein snacks accessible; avoid heavy meals before driving.
-
Inspect your rig for comfort: Kenworth, Wabash, Volvo, Freightliner, and other makes cited in our data can be fine machines, but a broken seat or cab temperature that's too hot or cold accelerates fatigue. Fix ergonomic issues early.
-
Communicate with dispatch: If you're struggling mid-shift, tell your carrier. Safe drivers are more valuable than on-time delivery. Most carriers have fatigue-management policies; use them.
The fact that 392.2-RRUC citations result in zero OOS orders suggests inspectors and enforcers take a coaching approach: they're warning you to rest, see a doctor, or get the condition under control. Don't ignore that warning. A citation on your record is manageable; a crash from operating impaired is career-ending and potentially fatal.