What 393.132(c) means in plain language
Federal regulations require that dressed lumber, building products, and similar materials be secured properly to your trailer. "Dressed lumber" refers to finished wood products like dimensional lumber, plywood, OSB, and other processed building materials—not rough-cut logs. When these items shift, slide, or fall during transit, they create hazards for other motorists and can result in cargo loss.
This is not about how tightly you stack the load, but about the mechanical systems and restraints you use to keep the load in place. Straps, chains, load bars, and other securement devices must be applied according to FMCSR standards to prevent movement in any direction.
What our enforcement data actually shows
Our inspection records show this is an exceptionally serious violation. Across 13 million inspections in our database, 393.132(c) has a 99.7% out-of-service rate—meaning drivers cited for this violation are taken off the road almost without exception. This is dramatically higher than the all-FMCSR average OOS rate of 31.4%.
All-time, we have recorded 323 total citations for 393.132(c), ranking it #1066 of 3,036 FMCSR codes by citation volume. However, enforcement has dropped sharply in recent years. Over the last 12 months and last 90 days, our data shows zero citations for this specific code. This does not mean the violation has disappeared—it likely reflects enforcement focus shifting to other cargo codes or regional inspection patterns. When it is cited, the outcome is almost certain: 322 of 323 citations resulted in out-of-service placement.
Who gets cited most
Because citation volume for 393.132(c) is concentrated historically among a small number of carriers and regions, our data shows fleets such as Shredded Mtl LLC (USDOT 3694538) with 7 citations and Lago International Inc (USDOT 2005871) with 5 citations accounting for a significant share of enforcement. Fair and Fast Logistics Inc, Lele Professional Trucker LLC, Diamond Truck Sales, and LTR Truck Inc each appear in our records with 5 citations.
The violation is not geographically isolated—it spans multiple carrier types and regions. Vehicle makes cited most frequently include Freightliner (26 citations), Peterbilt (20 citations), and Kenworth (16 citations), reflecting that cargo securement applies across all truck types.
How severe is this compared to similar codes
To understand where this violation sits among other cargo and maintenance codes, our data shows stark contrasts. Code 393.9(a)—inoperable required lamps—has 660,737 citations with a 15.4% OOS rate. Code 396.3(a)(1)—general inspection and maintenance defects—has 236,919 citations with a 45.3% OOS rate. By comparison, 393.132(c) is cited far less often but results in out-of-service placement in nearly every case.
This high OOS rate reflects inspector judgment that cargo securement failures represent immediate, unacceptable risk. Unlike a defective lamp that may allow a driver to limp to a repair facility, unsecured cargo creates hazard for the traveling public and is grounds for immediate removal from service.
How to avoid it
Before you load:
- Inspect all securement equipment—straps, chains, tiedowns, and load bars—for wear, rust, or damage. Replace anything frayed, corroded, or showing metal fatigue.
- Verify you have enough securement devices for the load volume. More devices = more distributed load security.
- Confirm your trailer floor is clean and free of debris so loads sit flat and stable.
During loading:
- Load materials as evenly as possible. Unbalanced stacks shift more easily during braking and cornering.
- Use edge protectors where straps cross load edges to prevent cutting and slipping.
- Place securement devices at angles—not parallel—to improve hold strength.
- Secure the load before leaving the shipper's lot. Do not assume it will settle during transport.
At pre-trip inspection:
- Walk the load. Look for visible gaps, tilting, or overhang.
- Tug each strap and chain by hand to confirm tension and proper engagement.
- Check that no securement device is twisted, kinked, or wrapped around itself.
- Document the load condition. If a violation occurs, documentation can help establish you delivered a properly secured load.
Freightliner and Peterbilt tractors with flatbed or gooseneck trailers are overrepresented in enforcement data—if you operate these vehicles with building products, apply extra scrutiny to securement before and after each stop.