What 393.102B means in plain language
FMCSR 393.102B requires that your commercial vehicle have adequate equipment to prevent cargo or loads from moving vertically during transport. This applies to anything you're hauling—whether it's secured cargo in a flatbed, a trailer load, or components that could shift up and down during acceleration, braking, or cornering.
The regulation doesn't specify which devices or methods you must use; it only requires that whatever system is in place must be sufficient to stop vertical movement. This could mean proper tie-downs, blocking, bracing, or other mechanical means. The key is that inspectors are looking for evidence that you've thought through how to keep your load stable and in place.
When an inspector cites you for 393.102B, they've determined that the means you have (or claim to have) are not adequate for the load you're carrying or the conditions of your vehicle.
What our enforcement data actually shows
Across our 13 million+ real roadside inspection records, 393.102B has generated 149 all-time citations, with 111 citations in the last 12 months and 26 in the last 90 days. This ranks the code at #1305 out of 3,036 FMCSR codes by citation volume—making it relatively uncommon compared to high-frequency violations.
However, the severity of enforcement is stark: our data shows an 86.6% out-of-service rate for this violation. That means 129 of the 149 cited vehicles were placed out of service. For context, the all-FMCSR average OOS rate is 31.4%, so 393.102B violations are treated far more harshly by inspectors than most other maintenance codes. When you get cited for this violation, the odds of being sidelined are much higher than a typical citation.
Over the last 12 months, citations have fluctuated. May 2025 saw a peak at 15 citations (13 OOS), while January 2026 was lowest at 3 citations (all 3 OOS). The most recent two months (February and March 2026) showed 13 and 12 citations respectively, suggesting enforcement remains consistent.
Who gets cited most
Texas is the only state in our top-states list for the last 180 days, with 48 citations and an 89.6% OOS rate. This indicates Texas weighstations and patrol are actively enforcing this code, and when they do, they almost always place the vehicle out of service.
Our data shows fleets with citations for this code include TEXAS IRON AND METAL COMPANY, GLORIA'S TRUCKING LLC, BLAIR LOGISTICS LLC, EASTERN EXPRESS INC, UNBRIDLED OIL FIELD SERVICES LLC, FRONTIER SUPPORT CARRIER LLC, AMERICAN BUILDERS & CONTRACTORS SUPPLY CO INC, ROOFLINE INC, SHARK TRUCKING INC, and SPECIALITY TRAILER TRANSPORT LLC, each with 2 citations. No single carrier dominates; this violation is spread across multiple operators of different sizes and specializations.
Vehicle makes most commonly cited include Freightliner (42 citations), Kenworth (29 citations), and Peterbilt (25 citations)—the industry's most common tractors. This reflects their market prevalence rather than any particular design flaw.
How severe is this compared to similar codes
To understand where 393.102B sits in the vehicle maintenance category, we compared it to other codes in the same category:
393.9 (Inoperable Required Lamp) has generated 180,097 citations with only a 6.9% OOS rate. Despite vastly higher citation volume, it results in far fewer out-of-service orders.
396.3(a)(1) (Inspection/Repair/Maintenance – General) has 236,919 citations and a 45.3% OOS rate. While higher than lamp violations, it's still significantly lower than 393.102B's 86.6%.
396.17(c) (No Proof of Periodic Inspection) shows 198,331 citations but a 0.0% OOS rate, indicating inspectors treat documentation failures very differently from actual equipment deficiencies.
This pattern shows that inspectors view insufficient cargo-securing means as a higher-risk problem than many other maintenance issues. The logic is straightforward: a lamp failure won't cause your load to shift and destabilize the vehicle, but inadequate vertical securing means can.
How to avoid it
Based on inspection patterns in our database, here are actionable steps to stay compliant:
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Inspect and test all tie-downs, chains, and straps before each trip. Look for visible damage, corrosion, or wear. Verify that whatever securing system you're using is actually rated for the weight and dimensions of your load. Don't assume last month's setup is still good.
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Check blocking and bracing materials if you're carrying stacked or loose cargo. Wood blocking can rot or splinter; metal bracing can develop stress fractures. Replace damaged material immediately.
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Ensure your equipment is appropriate for your vehicle type. Flatbeds, trailers, and specialized haulers have different securing requirements. What works on one rig may not work on another.
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Verify vertical restraint specifically during pre-trip. Walk around your load and physically check that nothing can move up or down. Push on secured items; they shouldn't shift. This single action will catch most violations before an inspector does.
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Maintain a separate log of securing equipment maintenance. Inspectors will ask—and our data shows citations often occur alongside other violations like inoperable lamps (393.9) and coupling defects (393.55C1), suggesting multiple systems failing at once. Systematic maintenance prevents clusters of citations.
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If you operate Freightliner, Kenworth, or Peterbilt equipment (the top three makes in our citation data), pay extra attention to how your specific model's tie-down attachment points are rated and whether your current securing method matches the manufacturer's guidance. These vehicles are common in our database not because they're problem units, but because they're widely used; staying above the baseline for these makes protects you.
The 86.6% OOS rate is a clear signal: inspectors don't issue warnings for this one. If they cite you, they're taking your vehicle out of service. Prevention through a solid pre-trip and regular maintenance of securing equipment is far cheaper than lost revenue and delayed loads.