What 393.112-C means in plain language
A 393.112-C citation means an inspector found that one or more of your cargo tiedowns cannot be adjusted. Tiedowns are the straps, chains, or cables that secure your load to the truck bed. They need to be adjustable so you can tighten them properly when the load shifts during transit or when you first secure it.
When a tiedown is not adjustable—whether the mechanism is broken, rusted solid, or designed without adjustment capability—you lose the ability to maintain proper tension on your cargo. This creates a safety risk because your load can move, shift, or come loose during braking, cornering, or rough road conditions.
The requirement is straightforward: every tiedown system on your truck must have a functioning adjustment mechanism. This is a maintenance issue, not a weight or load-type problem. If you're hauling virtually anything—pallets, equipment, salvage, or materials—the tiedowns holding them down must work.
What our enforcement data actually shows
Across our 13 million inspection records, 393.112-C is cited relatively infrequently. We recorded 674 citations all-time for this violation, with 434 in the last 12 months and 91 in the last 90 days. That ranks this code #827 out of 3,036 FMCSR violations by citation volume.
Here's the critical part for you: the out-of-service rate for 393.112-C is 0.1%. That means only 1 truck out of the 674 cited all-time was placed out of service for this violation. Compare that to the all-FMCSR average of 31.4%—this code is dramatically less likely to result in an immediate OOS order.
This does not mean the violation is insignificant. It means inspectors typically cite it as a defect requiring repair, but they rarely deem the truck unsafe enough to stop operations on the spot. You'll get a citation, but in the vast majority of cases, you can keep driving to a repair facility.
Who gets cited most
Our inspection records show the highest citation volumes in Pennsylvania, Maryland, and New York over the last 180 days. Pennsylvania had 37 citations, Maryland 22, and New York 20. None of these states had a single out-of-service placement for this code, maintaining a 0.0% OOS rate in each.
Kansas, Indiana, and Wisconsin followed with 17, 14, and 13 citations respectively—all with 0.0% OOS rates. The geographic concentration in the Northeast and Midwest suggests this violation is cited more aggressively in states with heavier freight traffic and more rigorous inspection activity in those corridors.
How severe is this compared to similar codes
Within the Vehicle Maintenance category, 393.112-C sits at the low end of enforcement severity. For comparison, 393.9(a)—inoperable required lamps—has been cited 660,737 times with a 15.4% OOS rate. That code is roughly 980 times more frequently cited and carries a significantly higher OOS risk.
Another peer code, 393.78 (windshield condition defective), has 157,894 citations and a 0.3% OOS rate—close to 393.112-C in OOS likelihood but cited far more often. The difference suggests that while tiedown adjustment issues are serious enough to warrant citation, they're typically not considered immediate safety threats to the vehicle's ability to operate.
Codes like 396.17(c)—no proof of periodic inspection—have a 0.0% OOS rate despite 198,331 citations, showing that many Vehicle Maintenance violations are documented as defects requiring correction rather than grounds for roadside shutdown.
How to avoid it
Prevent a 393.112-C citation by conducting a thorough pre-trip inspection of every tiedown on your truck:
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Check every adjustment point. Whether your tiedowns use ratchet straps, chain adjusters, or turnbuckles, physically test the mechanism before you load. Tighten and loosen each one to confirm it moves freely and holds tension.
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Inspect for corrosion and damage. Our inspection records show FORD trucks (148 citations for this code) and FREIGHTLINER units (48 citations) are frequently cited. Regardless of make, salt and moisture corrode metal tiedowns and freeze adjustment mechanisms. If you operate in winter or coastal regions, pay extra attention to rust on chains and frame attachment points.
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Replace or repair frozen hardware immediately. If a tiedown won't adjust because of rust, corrosion, or damage, don't attempt a roadside workaround. Replace the entire tiedown assembly or repair the mechanism before you load cargo.
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Look for signs of regular co-occurring violations. Our data shows that cargo securement issues—like roll-on/roll-off container problems (30 shared inspections in the last 90 days) and damaged tiedowns (13 shared inspections)—often appear together. If you notice one tiedown is damaged, inspect the rest of your cargo securement system.
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Document your maintenance. Keep a log of when you inspect and service tiedowns. If you're cited, evidence of regular maintenance can support your defense or help you challenge the citation if the inspector's assessment was incorrect.
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Don't ignore medical certificate or lamp issues either. Our data shows 391.41APC (missing medical certificate) and 393.9A-LIL (inoperable required lamps) frequently appear in the same inspections as tiedown violations. A complete pre-trip includes lights, wiper condition, and your medical certificate—not just cargo securement.