What 393.128B1 means in plain language
FMCSR 393.128B1 addresses the securement of roll-on/roll-off or hook lift containers—the kind of cargo systems where a container is loaded onto a truck bed using hydraulic equipment and must remain firmly attached during transport. If an inspector finds that your roll-on/roll-off container or hook lift container is not properly secured to the vehicle, you'll receive a citation under this code.
Proper securement means the container is locked, latched, or otherwise fastened in a way that prevents it from shifting, tipping, or becoming detached while you're driving. This applies whether the container is empty or loaded, and regardless of how short your haul distance is. The requirement exists because an unsecured container poses a serious risk to other road users and can cause damage to your vehicle or cargo.
What our enforcement data actually shows
Across our 13 million+ roadside inspection records, we've documented 220 all-time citations for 393.128B1, with 123 issued in the last 12 months and 21 in the last 90 days. This code ranks #1195 out of 3,036 FMCSR codes by citation volume—a relatively uncommon violation, but one with severe enforcement consequences.
The most striking finding: 97.7% of 393.128B1 citations result in an out-of-service order. That's 215 OOS placements out of 220 total citations. This is dramatically higher than the all-FMCSR average OOS rate of 31.4%. In practical terms, if you're cited for this violation, there is a near-certain chance your vehicle will be taken out of service immediately, halting your load and potentially costing you time and money.
The data shows a slight seasonal uptick: in the 12-month window we analyzed, August 2025 saw the highest volume with 18 citations and 17 OOS placements, while other months ranged from 5 to 16 citations. June 2025 and November 2025 also saw elevated activity at 14 and 16 citations respectively.
Who gets cited most
Our inspection records show the top three states for 393.128B1 enforcement over the last 180 days are Iowa with 27 citations, followed by Illinois with 8 citations, and North Carolina with 8 citations. All three states placed every cited vehicle out of service, achieving a 100% OOS rate in that window.
When we look at carriers across our entire database, Karro Auto Movers Inc (USDOT 3213478) appears most frequently with 5 citations, followed by Massey LLC (USDOT 3489438) and Pasha Distribution Services LLC (USDOT 1773940), each with 4 citations. Our data shows fleets such as these with multiple citations, indicating that roll-on/roll-off securement may require particular attention in their pre-trip routines or load procedures.
Vehicle-wise, our citation records span a broad range of makes. Peterbilt (39 citations) and Ford (39 citations) top the list, followed closely by Ram (38 citations). Trailers, Cummins, Freightliner, and Volvo vehicles also appear frequently in this dataset, suggesting that the violation occurs across many truck types rather than being confined to specific equipment.
How severe is this compared to similar codes
Within the Vehicle Maintenance category, 393.128B1 is an outlier in terms of OOS outcome. For comparison, Inoperable Required Lamps (393.9a) has generated 660,737 citations but carries only a 15.4% OOS rate. Similarly, Inoperable Required Lamp (393.9) shows 180,097 citations with just 6.9% OOS. Lighting defects and reflector issues (393.11) also show low OOS rates at 1.8%.
On the other end, Inspection/Repair/Maintenance General (396.3a1) has 236,919 citations with a 45.3% OOS rate—substantially higher than most codes but still well below 393.128B1's 97.7%. No proof of periodic inspection codes (396.17C-PI and 396.17c) show zero OOS despite combined citation counts exceeding 410,000. In short, 393.128B1's near-universal out-of-service outcome makes it one of the highest-consequence violations in the maintenance category.
How to avoid it
Our co-occurring violation data reveals patterns that can guide your prevention strategy. The most common co-occurring code is No Proof of Periodic Inspection (396.17C), appearing in 9 shared inspections over 90 days. This suggests that inspectors finding securement issues often discover you lack maintenance documentation. Before you depart, carry proof that your roll-on/roll-off or hook lift mechanism has been inspected and serviced according to manufacturer specifications.
Operating While Ill or Fatigued (392.2RG and 392.2DIM) appeared in 9 combined co-occurrences, indicating that fatigue-related judgment lapses may correlate with inadequate load securing. Ensure you're well-rested and mentally sharp when coupling or latching your container—this is not a task to rush.
Inoperable Required Lamp (393.9) and Lighting/Reflector issues (393.11TL) each appeared in 5 co-occurrences, alongside Emergency Equipment deficiencies (393.95A) and False Duty Status records (395.8E). This suggests that vehicles cited for securement may have multiple compliance gaps. Conduct a full pre-trip inspection of lights, reflectors, fire extinguisher, and all cargo-handling hardware before you operate.
Cargo Securement Tiedown Damaged (393.104F3) appeared in 4 co-occurrences—a direct signal that frayed, cracked, or corroded securement hardware is a precursor to 393.128B1 citations. Walk around your roll-on/roll-off container and manually test every latch, lock, and bracket for damage or wear. If any component is bent, corroded, missing, or doesn't engage fully, do not move the vehicle.
Given that Peterbilt, Ford, and Ram vehicles dominate the citation list, familiarize yourself with the specific securement procedure for your truck's roll-on/roll-off or hook lift system. Manufacturer guidelines vary. Consult your vehicle manual or fleet maintenance manager to confirm the correct sequence for engaging locks and verifying a secure connection. This knowledge takes five minutes but can prevent a roadside stop and out-of-service order.