What 392.2SAFCH-ATTCH means in plain language
FMCSR 392.2SAFCH-ATTCH prohibits you from operating a commercial motor vehicle when your ability to drive safely is impaired. This impairment can come from fatigue, illness, medication side effects, or any other physical or mental condition that reduces your alertness or judgment behind the wheel.
The regulation doesn't require you to be in severe distress—only that your condition creates a safety risk. An officer making this citation is saying they observed signs suggesting your driving ability was compromised: swerving, slow reaction time, heavy eyelids, confusion at the scale, or statements you made about not feeling well.
This is a judgment call by the inspector, and it's grounded in the principle that impaired drivers endanger themselves, their cargo, and everyone else on the road. The regulation exists to catch situations before they become accidents.
What our enforcement data actually shows
Across our 13 million+ inspection records, we've recorded 352 all-time citations for 392.2SAFCH-ATTCH. In the last 12 months, enforcement volume reached 215 citations, and in the last 90 days, 41 citations were issued.
The out-of-service rate for this code is notably low: only 5.4% of citations resulted in the driver being placed out of service (19 out of 352 all-time). This contrasts sharply with the all-FMCSR average OOS rate of 31.4%. The low OOS rate suggests that most inspectors issue this citation as a warning or minor violation rather than an immediate safety threat that requires removal from service.
Ranked by citation volume, 392.2SAFCH-ATTCH sits at #1032 out of 3,036 FMCSR codes. It's not among the most frequently cited violations, but enforcement appears steady and distributed across the country.
The monthly trend over the last 12 months shows variability: we saw a peak of 35 citations in September 2025, while April 2026 has recorded only 1 citation so far. Autumn and winter months tend to show slightly higher citation counts, which may reflect fatigue accumulation over longer haul seasons or seasonal health factors.
Who gets cited most
Our inspection records show California leads enforcement with 16 citations in the last 180 days, followed by Utah with 10. California also had the highest out-of-service rate for this code at 25.0% (4 out of 16 citations), while Utah recorded zero OOS placements. Florida, New York, Washington, Montana, Pennsylvania, Mississippi, Tennessee, and Colorado round out the top 10, each with 3 to 5 citations and predominantly 0.0% OOS rates in that recent window.
The 25-percentage-point spread between California's OOS rate and the zero-rate states suggests regional enforcement variation or differences in inspector judgment about severity. California inspectors may be citing this code more conservatively—only when they believe immediate removal is justified—while inspectors in other states may use the citation more broadly as a documented warning.
Our data shows fleets such as Oliver's Transportation LLC and Federal Express Corporation each with 2 all-time citations, though this violation is widely distributed across carrier operations rather than concentrated among a small number of fleets.
How severe is this compared to similar codes
392.2SAFCH-ATTCH is one variant within a broader category of "Operating a CMV while ill or fatigued" violations. The parent code, 392.2, has accumulated 1,208,164 citations with a 0.8% OOS rate. The peer code 392.2-SLLSR has 191,232 citations and a 0.1% OOS rate, making both far more prevalent than 392.2SAFCH-ATTCH's 352 citations.
Another close peer, 392.2-SLLEQP, has 72,352 citations but a 2.4% OOS rate—significantly higher than our code's 5.4%. This variation suggests that "ill or fatigued" citations can be issued under different circumstances, and SAFCH-ATTCH may represent a subset where inspectors perceive greater immediate risk (hence the higher OOS rate despite lower citation volume).
Compared to its peer codes, 392.2SAFCH-ATTCH is a narrower, more specific violation—rarer to cite, but when cited, slightly more likely to result in removal from service.
How to avoid it
Before you leave the yard:
- Get adequate rest. Fatigue is the primary trigger for this citation. Ensure you're sleeping at least 7 hours before a shift. If you're on multi-day routes, plan rest stops and stick to them.
- Check your health. If you're running a fever, experiencing severe pain, taking new medication, or recovering from illness, inform your dispatcher and consider delaying your trip. A one-day delay beats a citation and a safety incident.
- Review your medical certificate status. Our data shows 391.41APC (medical certificate violations) co-occurs with this code in 7 shared inspections over the last 90 days. Ensure your medical card is current and in your possession.
During your pre-trip and at the roadside:
- Perform a thorough vehicle inspection. Co-occurring citations include 393.43DBMA and 393.43D-B (brake relay emergency valve issues), 393.95F (emergency warning devices), and 396.17C-PI (proof of periodic inspection). A mechanical failure or warning light can mask fatigue-related impairment in the inspector's assessment, so verify brakes, lights, and safety equipment.
- Carry proof of compliance. The code 390.21TB2-DOT and 390.21TB1-MC co-occur frequently, suggesting paperwork checks are happening alongside fatigue assessments. Ensure your logbook, vehicle registration, and inspection records are in order.
- Recognize your limits. If an inspector is asking you questions or running tests—even informally—to assess alertness, they're already suspicious. If you're genuinely unwell or exhausted, don't try to push through. Requesting a safe pull-off or even a brief rest is far preferable to operating impaired.
Fleet safety managers:
The top vehicle makes cited include Ford (96 citations), Dodge (60), and Chevrolet (29). If your fleet uses older or higher-mileage examples of these vehicles, ensure rigorous preventive maintenance—mechanical issues may prompt inspectors to scrutinize driver condition more closely. Implement fatigue management programs and mandate sleep protocols on long routes. The 5.4% OOS rate suggests this violation is winnable: most drivers cited are not removed from service, indicating that with documentation, communication, and proper pre-trip management, citations can be contested or prevented.