What 393.124(b) means in plain language
When you haul concrete pipe, federal regulations require that load to be secured in a specific way. This code enforces those securement rules—the chains, straps, blocking, or other restraint devices that keep the pipe from shifting, falling, or separating during transport.
The regulation covers how that pipe must be positioned and held in place on your trailer. If an inspector finds the pipe isn't properly restrained according to those standards, you get cited under 393.124(b). This isn't about whether you tried to secure it—it's about whether your actual securement method meets the rule's technical requirements.
You'll see this violation most often on flatbed and specialty trailers carrying masonry and building materials. Even a single improperly secured pipe can trigger a citation.
What our enforcement data actually shows
Across our 13 million inspection records, 393.124(b) appears 9 times total in our database—making it ranked #2230 out of 3,036 FMCSR codes by citation volume. That's extremely rare enforcement activity.
However, the violation carries serious consequences when it does occur. Our data shows an out-of-service rate of 88.9% for this code—meaning 8 out of 9 citations resulted in an out-of-service order. This is dramatically higher than the all-FMCSR average OOS rate of 31.4%. In other words, inspectors almost always deem this violation serious enough to remove the vehicle from service immediately.
In the last 90 days and last 12 months, we have recorded zero citations for 393.124(b). The most recent enforcement activity in our database occurred more than a year ago. This rarity doesn't mean the rule is forgotten—it means most carriers and drivers are complying successfully, or inspectors rarely encounter concrete pipe loads at roadside.
Who gets cited most
Our inspection records don't break down 393.124(b) citations by state in a way that identifies a single dominant state. Instead, the data shows that citations for this violation are so few that they're distributed across multiple carriers rather than clustered geographically.
Among carriers in our database, THE QUIKRETE COMPANIES LLC (USDOT 51938) appears with 2 citations for this code. Other carriers—THOMAS A MCKISSICK INC, A-1 TRANSIT CORPORATION, MORRELL & MORRELL LP, ASTRO MASONRY & SUPPLY CO LLC, IVY TRANSPORT INC, UNITED PAVING CORP, and MARZ TRUCKING & TRANSPORT LLC—each have 1 citation. These are predominantly carriers in the concrete, masonry, and heavy materials sector, which makes sense given the cargo type.
Freightliner trucks (4 citations) and Peterbilt units (2 citations) were the most commonly cited vehicle makes, though the total volume is too small to draw reliable patterns about which manufacturer's equipment is more at risk.
How severe is this compared to similar codes
Within the Vehicle Maintenance category, 393.124(b) is exceptionally rare. By contrast, peer codes show how enforcement normally concentrates:
393.9(a) — Inoperable required lamps has 660,737 all-time citations with a 15.4% OOS rate. That's roughly 73,000 times more citations than 393.124(b), and inspectors place far fewer of those out of service.
396.3(a)(1) — Inspection/repair/maintenance (general) has 236,919 citations with a 45.3% OOS rate, still far more frequent and with a lower severity rate than concrete pipe securement.
396.17(c) — No proof of periodic inspection generates 198,331 citations but a 0.0% OOS rate—meaning the violation is paperwork-focused rather than safety-critical.
The 88.9% OOS rate for 393.124(b) places it in a different enforcement tier entirely. When this violation occurs, it's treated as an immediate safety hazard.
How to avoid it
Since concrete pipe violations are rare but severe, follow these steps:
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Inspect load securement before you roll. Walk around your trailer and physically check every chain, strap, or brace holding the pipe. Verify they're tight, rated for the load weight, and free of damage.
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Know the specific securement method required for your cargo class. Don't assume your standard flatbed procedure works for concrete pipe. Review the regulation or ask your dispatcher for the approved securement diagram.
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Use blocking and bracing. Concrete pipe must often be prevented from rolling side to side. Ensure wood blocks, steel chocks, or header boards are in place and securely fastened.
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Distribute load weight evenly. Improper weight distribution can cause the load to shift during braking or turns, putting stress on securement devices and creating movement.
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Recheck securement during your trip. Stop periodically—especially after highway driving or rough roads—and verify that all restraints remain tight and in place.
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Document your pre-trip securement check. A log entry noting the time, method, and components checked creates a record and reinforces the habit.
If you drive a Freightliner or Peterbilt hauling masonry materials, pay extra attention to trailer configuration—our data shows these makes appear in the citation history for this code. Ensure your trailer's attachment points, rail height, and overall design are compatible with the securement method you're using.