What 386.83A1-OOSOFHC means in plain language
FSMCR 386.83A1-OOSOFHC addresses operator-out-of-service violations related to hazardous materials handling. This citation is issued when an operator of a commercial motor vehicle transporting hazardous materials fails to meet specific regulatory requirements governing safe transport, documentation, or operational procedures for hazmat cargo.
The violation falls into the administrative and general compliance category. Unlike some citations that result in warnings or minor penalties, this code triggers enforcement action with high frequency. If you received this citation at roadside, an inspector determined that your operation of a hazmat vehicle did not comply with federal safety standards.
What our enforcement data actually shows
Across our 13 million+ inspection records, 386.83A1-OOSOFHC ranks #1364 out of 3,036 FMCSR codes by total citation volume. While not the most commonly cited violation, what matters more is enforcement severity: our inspection records show a 97.6% out-of-service rate for this code—all-time citations total 123, with 120 placed out of service and only 3 not placed OOS.
To put this in perspective, the all-FMCSR average OOS rate is 31.4%. This code is cited at more than triple that rate, making it one of the most consistently enforced violations in roadside inspection. Over the last 12 months, we recorded 53 citations, with 17 citations in the last 90 days. The enforcement trend shows activity concentrated in summer and early winter months, with February 2026 recording the highest volume at 11 citations—all resulting in out-of-service placement.
Who gets cited most
Our data shows geographic variation in enforcement. In the last 180 days:
Arizona led with 5 citations, all 5 resulting in out-of-service placement (100% OOS rate). Texas followed with 5 citations, though 1 driver avoided out-of-service status, for an 80% OOS rate—the only top state showing variation. Oklahoma recorded 4 citations with a 100% OOS rate.
Fleets operating across the Southwest and South-Central regions see higher enforcement frequency for this code. Our data shows carriers such as Integral Global Transportation Solutions Inc have accumulated 6 citations all-time, and RS Transfer SA de CV with 5 citations. These numbers reflect operational patterns or compliance gaps that persist across multiple inspections rather than isolated incidents.
Vehicle make data reveals that Freightliner and Volvo tractors account for 20 citations each in our database, followed by International with 13 citations. This likely reflects their prevalence in hazmat operations rather than design defects, but if you operate these makes, heightened pre-trip inspection discipline is warranted.
How severe is this compared to similar codes
This code sits in the General/Admin category alongside marking and documentation violations. Peer codes in the same category tell a very different story:
390.21TB2-DOT (marking requirements) has 74,663 citations but a 0.0% out-of-service rate. 390.21T(b) shows 61,097 citations with 0.0% OOS rate. 390.21TB1-MC recorded 59,189 citations with 0.0% OOS rate.
The contrast is stark: marking and documentation violations are cited frequently but almost never result in immediate removal from service. 386.83A1-OOSOFHC, by contrast, is cited far less often but placed out of service in nearly every instance. This tells you that inspectors view this violation as immediately unsafe rather than a paperwork problem.
How to avoid it
Our data on co-occurring citations provides clues about what triggers this violation alongside other safety gaps. In the last 90 days, 392.9AA1 appeared in 6 shared inspections with 386.83A1-OOSOFHC, suggesting fatigue or fitness-to-operate issues correlate with hazmat compliance failures. Operating a CMV while ill or fatigued (code 392.2) appeared in 5 shared inspections, reinforcing that alertness matters.
Window and lamp issues (393.60C and 393.9A-LHLI each appearing 2–3 times) suggest that general vehicle maintenance gaps compound hazmat violations. Here's what you can do before your next trip:
-
Verify hazmat endorsement status and documentation. Confirm your HazMat endorsement is current and that your vehicle's placards, labels, and shipping papers are present, legible, and match the actual cargo. Don't assume dispatch did this correctly.
-
Conduct a full pre-trip inspection focused on vehicle systems. Because lamp and glazing defects co-occur with this violation, inspect all running lights, brake lights, marker lights, and windows during your walk-around. A defective light or cracked windshield can be cited alongside hazmat violations in the same stop.
-
Establish a pre-departure checklist specific to hazmat. Verify that placarding is secure and not obscured by dirt, ice, or damage. Confirm that the vehicle itself is roadworthy—brakes responsive, tires properly inflated, no visible structural damage. Our data shows that multiple safety systems are checked during a single roadside stop, so one failure often surfaces others.
-
Stay alert and rested when hauling hazmat. Fatigue and illness correlate with this citation in our data. If you're drowsy, unwell, or impaired, you're more likely to make errors with documentation, placarding, or vehicle operation that trigger inspection.
-
Know your cargo rules by commodity. If you regularly haul certain hazmat classes, study the specific placarding, packaging, and routing rules for those commodities. Many violations stem from using incorrect placards or failing to recognize hazmat vs. non-hazmat classification.
A 97.6% out-of-service rate means inspectors take this citation seriously and act on it immediately. There is no margin for error once you're at a scale house or roadside stop. Your best strategy is prevention through meticulous pre-trip discipline and hazmat knowledge before you ever interact with law enforcement.