What 393.106B means in plain language
FMCSR 393.106B requires that your truck have an adequate headerboard or bulkhead at the front of your cargo area whenever you're carrying freight that needs it. A headerboard is the wall or structure at the front of your load that keeps cargo from sliding forward during hard braking or sudden deceleration. If that structure is missing, broken, or doesn't provide enough coverage or strength for the load you're carrying, you're in violation.
The regulation doesn't apply to every load. It only kicks in when your cargo actually requires a headerboard for safe securement. But when it does apply, inspectors take it seriously. A failed headerboard isn't just a paperwork issue—it's a safety issue that can result in cargo shifting into your cab or becoming a projectile on the road.
What our enforcement data actually shows
Across our 13 million+ real roadside inspection records, we've documented 282 all-time citations for 393.106B. In the last 12 months, enforcement volume was 177 citations, and in the last 90 days we recorded 28 citations. This code ranks #1110 of 3,036 FMCSR codes by citation volume—relatively uncommon, but when it happens, the consequences are severe.
Our inspection records show a 72.3% out-of-service rate for 393.106B violations. That's significantly higher than the all-FMCSR average of 31.4%. This code is nearly 2.3 times more likely to result in an out-of-service order than the typical violation. In practical terms: if you're cited for 393.106B, there's a strong probability your vehicle will be ordered off the road until the issue is fixed.
Who gets cited most
Data from the last 180 days shows Texas leads in enforcement volume with 38 citations and a 76.3% out-of-service rate. Illinois follows with 15 citations but a notably lower 20.0% OOS rate, suggesting variation in inspection standards or load types across regions. New Mexico had 7 citations with a 100.0% out-of-service rate, indicating that when this violation is found there, it nearly always results in immediate removal from service.
Our all-time data shows that fleets such as TOP NOTCH TRANSIT LLC (USDOT 3601721) have received 6 citations for this code, and PLATINUM 21 LOGISTICS LLC (USDOT 2872634) has 4 citations. This doesn't indicate systemic negligence; it reflects that larger, active fleets naturally have higher citation counts due to volume of operations.
How severe is this compared to similar codes
Within the Vehicle Maintenance category, 393.106B sits in a high-severity tier. Compare it to 393.9 (Inoperable Required Lamp), which has 180,097 all-time citations but only a 6.9% out-of-service rate. Or 393.11 (Lighting devices/reflectors) with 179,734 citations and just 1.8% OOS rate. Those are cited far more often but placed out-of-service much less frequently.
In contrast, 396.3(a)(1) (Inspection/Repair/Maintenance—general) has 236,919 citations with a 45.3% OOS rate. While that's still lower than 393.106B's 72.3%, it shows that cargo and structural defects are treated with greater urgency than many other maintenance violations. The data indicates that inspectors view headerboard failures as immediate safety hazards rather than items you can defer.
How to avoid it
Based on patterns in our enforcement data, here's what drivers and fleet managers should prioritize:
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Pre-trip the cargo area structure every time. Walk around the front of your trailer or cargo bed before loading. Look for cracks, dents, rust-through, or loose fasteners on the headerboard or bulkhead. If it doesn't look solid, don't load the freight.
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Check that the headerboard is secured and sits flush. A headerboard that's come loose or shifted isn't meeting the requirement. Tighten bolts and verify it's properly seated against the cargo frame.
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Inspect the mating surfaces where the headerboard attaches. Our co-occurring violation data shows coupling devices and towing methods defects sometimes appear in the same inspections, suggesting that wear and vibration can compromise structural attachments. Make sure bolts haven't loosened from road vibration.
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Verify your load matches your headerboard capacity. Don't assume a headerboard designed for one freight type will handle another. If you're switching load types, confirm the headerboard is rated for the weight and nature of the cargo.
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Pay special attention if you operate a Freightliner, Ford, or Peterbilt. Our data shows Freightliners account for 75 all-time 393.106B citations, Fords for 30, and Peterbilts for 28. These makes aren't inherently riskier, but they represent the largest portion of citations, so drivers of these vehicles should be especially diligent during pre-trips.
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Address inoperable lamps and emergency equipment at the same time. In the last 90 days, inoperable lamps (393.9) and missing fire extinguishers appeared together with 393.106B violations in 8 and 6 shared inspections respectively. Structural issues often coincide with neglected maintenance generally, so a thorough pre-trip catches multiple problems.
The monthly trend in our data shows enforcement activity peaked in July 2025 (25 citations) and August 2025 (20 citations), suggesting summer months may see more intensive cargo-related inspections. Stay especially vigilant during peak freight seasons.