What 393.106D means in plain language
FMCSR 393.106D requires that trucks hauling certain cargo types have an adequate headerboard or bulkhead at the front of the cargo compartment. A headerboard is a barrier—usually made of plywood, metal, or composite material—that prevents cargo from shifting forward and striking the cab or creating a hazard during sudden stops or collisions.
If an inspector finds that your headerboard is missing, damaged beyond safe use, or structurally inadequate for the type and weight of cargo you're carrying, you'll be cited. The regulation recognizes that not all loads require one (liquid tankers, for example, have different rules), but when the cargo type demands it, the headerboard must be in place and in working condition.
This is fundamentally about keeping your cargo—and the vehicles and people around you—safe during transport. A failed headerboard can result in cargo spilling into the cab, ejecting onto the roadway, or creating a collision hazard.
What our enforcement data actually shows
Across our 13 million+ inspection records, 393.106D has generated 257 citations in the last 12 months and 59 citations in the last 90 days. All-time, we've recorded 432 citations for this code, ranking it #972 out of 3,036 FMCSR codes by citation volume.
When 393.106D is cited, inspectors place trucks out of service at an extraordinarily high rate. Our data shows a 97.2% out-of-service rate for this code—meaning in nearly every case, the cited truck is ordered off the road immediately. For context, the average FMCSR code carries a 31.4% out-of-service rate. This 65.8 percentage-point gap reflects the safety-critical nature of cargo securement: inspectors treat headerboard violations as an imminent hazard.
The monthly trend over the last 12 months shows enforcement peaked in June 2026 (33 citations) and February 2026 (28 citations). Even in lower-volume months, the OOS rate remains near 100%.
Who gets cited most
Our inspection records show that three states account for the vast majority of 393.106D citations in the last 180 days:
Texas leads by a significant margin with 80 citations (93.8% OOS rate). Iowa follows with 14 citations (92.9% OOS rate), and North Carolina has 9 citations (100% OOS rate). The consistency of OOS rates across these states—all above 92%—underscores that this violation is enforced uniformly as a safety defect requiring immediate repair.
Among carrier operators, our data shows fleets such as Consolidated Electrical Distributors Inc (USDOT 277907) with 4 citations, and Curtis Henderson Enterprise LLC (USDOT 1856516) with 3 citations. Small numbers do not imply patterns, but they reflect that 393.106D citations are distributed across diverse carrier types and sizes.
How severe is this compared to similar codes
393.106D falls in the Vehicle Maintenance category alongside other cargo securement and structural inspection codes. Comparing to related violations:
- 393.9 (Inoperable Required Lamp) has been cited 180,097 times with only a 6.9% OOS rate. Lamps are maintenance defects that often can be corrected on-site; headerboards cannot.
- 393.78 (Windshield condition defective) has 157,894 citations with a 0.3% OOS rate. Windshield defects are lower-risk and repairable without cargo unloading.
- 396.3(a)(1) (Inspection/repair/maintenance general) carries 236,919 citations with a 45.3% OOS rate—serious but still well below 393.106D's 97.2% figure.
The stark difference reflects that a missing or inadequate headerboard presents an immediate, unresolvable hazard in the field. You cannot safely continue with an absent front-end barrier on certain loads.
How to avoid it
Based on patterns in our inspection data, here are concrete steps to prevent a 393.106D citation:
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Conduct a pre-trip walk-around focused on your cargo area. Check that your headerboard is physically present, securely mounted to the frame, and free of large cracks, separations, or missing bolts. If you see damage, do not roll—arrange for repair first.
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Know your load type. Headerboards are required for certain dry-goods, bulk, and general freight loads. If your dispatcher assigns a load that requires one, verify it's installed before departure. If you're unsure, ask your fleet's safety manager.
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Inspect after rough roads or heavy braking events. Our data shows 393.104B and 393.104F3 (tiedown damage) frequently appear on the same inspection as 393.106D, indicating that structural and securing-component failures cluster during tough routes. If you've had a hard stop or heavy impact, pull over and check the headerboard for new cracks or loosening.
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Stay rested and attentive during pre-trip. Our records show 392.2RG and 392.2W (fatigued/ill operator) appear together with 393.106D in 23 shared inspections over 90 days. Fatigue can lead to missed damage during inspection. A clear head catches problems early.
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Use secure mounting hardware. Headerboards fail when bolts are missing or corroded. Check fasteners monthly and replace any that are loose, rusty, or missing. This is especially important for trailers and older equipment; peterbilt and freightliner models dominate our citation data (99 and 75 citations respectively), suggesting these models see high mileage and wear.
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Coordinate with your fleet's maintenance team on a schedule. If your headerboard is near the end of its serviceable life, proactive replacement beats a roadside citation and OOS order every time.
A 97.2% out-of-service rate means there is almost no margin for negotiation at the scale. Address headerboard issues during pre-trip or routine maintenance, not at the roadside.