What 393.128B2 means in plain language
If you received a citation for 393.128B2, an inspector found that a roll-on/roll-off or hook lift container on your truck was not properly secured during the roadside inspection. These are specialized containers that load and unload via mechanical systems—either by rolling onto the truck bed or by lifting hooks. The regulation requires that once one of these containers is loaded onto your vehicle, it must be locked, chained, or otherwise mechanically fastened so it cannot shift, tip, or fall during transit.
This is not about the cargo inside the container. It's about the container itself being affixed to your truck. A container that comes loose during braking, cornering, or sudden lane changes creates a hazard for other motorists and can result in loss of load, vehicle damage, or collision.
What our enforcement data actually shows
Across our 13 million inspection records, 393.128B2 has received 19 citations all-time, with 9 in the last 12 months and zero in the last 90 days. This code ranks #1962 out of 3,036 FMCSR codes by citation volume—it is uncommon.
However, when an inspector does cite it, the consequences are severe. Our data shows that 15 out of 19 citations (78.9% out-of-service rate) resulted in the truck being placed out of service. This is significantly higher than the all-FMCSR average out-of-service rate of 31.4%. That means if you are cited for this violation, there is roughly a four-in-five chance your truck will be taken off the road immediately until the defect is corrected.
In the last 12 months, monthly citations have clustered in the fall and early winter, with September showing the highest monthly count at 3 citations, all three resulting in out-of-service placements.
Who gets cited most
Our inspection records show that Texas accounts for 1 citation in the last 180 days, which resulted in an out-of-service placement (100% OOS rate for that sample).
By all-time carrier data, our records show fleets such as Horizen LLC and Tunduk Inc, each with 2 citations on file. No single carrier dominates the citation landscape for this code, suggesting that the violation occurs across a broad range of operators rather than being concentrated in a few fleets.
How severe is this compared to similar codes
393.128B2 sits within the Vehicle Maintenance category. When compared to peer codes in the same regulatory family, its severity stands out. For example, 393.9(a) (Inoperable required lamps) has generated 660,737 citations but only a 15.4% out-of-service rate. Similarly, 396.3(a)(1) (Inspection/repair/maintenance – general) has 236,919 citations with a 45.3% OOS rate.
In contrast, 393.128B2's 19 citations paired with its 78.9% OOS rate suggests that inspectors treat unsecured roll-on/roll-off containers as a critical safety failure. The high OOS rate relative to citation volume indicates that when this violation is found, it is treated as severe enough to immediately ground the vehicle.
How to avoid it
To prevent a 393.128B2 citation, build these checks into your pre-trip and post-load routine:
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Verify container latches and locks before departure. After your container is loaded, walk around the vehicle and physically test all latching mechanisms, hooks, and locking points. Do not rely on visual inspection alone—tug on the container to confirm it does not shift or rattle.
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Confirm all securing hardware is in place and rated for load weight. Missing or corroded chains, broken hook assemblies, or undersized fasteners are common failures. Replace any hardware that shows signs of wear or damage before loading.
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Inspect the mounting points on your truck frame. Cracks, bent brackets, or loose attachment points compromise container security. Address frame damage before accepting a loaded container.
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Use proper load distribution. Uneven weight distribution can cause a container to tilt or shift even if mechanically fastened. Ensure the load is balanced and positioned correctly within the container before securing it to your truck.
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Document the container condition before and after loading. Take photos of the secured container and note the condition of all fasteners. This record protects you and your fleet in case of roadside inspection disputes.
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Know your truck's specific securing system. RAM, Freightliner, Dodge, and Ford vehicles are represented in our citation data. Each manufacturer may have different latching and hook designs. Review your vehicle manual and, if necessary, train with your dispatcher on the correct securing procedure for your specific truck model.
The 78.9% out-of-service rate tells you that this is not a warning violation—inspectors treat it as an immediate safety risk. A few minutes spent verifying container security before you leave the dock can save you hours of downtime and costly repairs if your load comes loose.