What 392.9AA1 means in plain language
FMCSR 392.9AA1 addresses the requirement that a driver must not operate a commercial motor vehicle unless the cargo is properly secured and the vehicle's load does not obscure the driver's view or interfere with the safe operation of the vehicle. In practical terms, this means your load must be contained, immobilized, or secured using adequate tie-downs, and it cannot shift, leak, or fall in a way that creates a hazard for you or anyone else on the road.
The regulation also covers situations where the load affects your ability to control the vehicle — whether that's blocking mirrors, limiting steering, or making braking unpredictable. It is not limited to flatbeds or open loads. Any CMV with cargo that has not been properly secured or that creates an unsafe operating condition can result in this citation.
In short: if an inspector looks at your rig and decides that the way your cargo is loaded poses an active safety risk, 392.9AA1 is the tool they will use to write it up — and as our data makes clear, they write it up a lot.
What our enforcement data actually shows
Across 13 million inspections in our database, 392.9AA1 has generated 8,436 all-time citations, placing it at #249 out of 3,036 FMCSR codes by citation volume. That puts it firmly in the top 10% of all federal motor carrier regulations by enforcement frequency — this is not an obscure technicality.
The number that should get your attention immediately is the out-of-service rate. Of those 8,436 all-time citations, 8,004 resulted in the driver being placed out of service — a 94.9% OOS rate. To put that in context, the all-FMCSR average OOS rate across all codes is 31.4%. This code runs more than three times that average. When an inspector cites you for 392.9AA1, the odds are overwhelming that your day stops right there.
Enforcement is not slowing down. Our inspection records show 5,883 citations in the last 12 months alone, and 1,442 in just the last 90 days. Looking at the monthly trend, citations climbed from 234 in April 2025 to a high of 647 in March 2026 — a clear and sustained upward trajectory. This is an enforcement priority that is actively intensifying.
Who gets cited most
Looking at the last 180 days in our database, Texas leads all states with 714 citations, 661 of which resulted in OOS placement (a 92.6% OOS rate). Pennsylvania comes in third with 145 citations and a 99.3% OOS rate — meaning inspectors in Pennsylvania who cite this code almost universally pull the driver off the road. California recorded 124 citations over the same period, though its OOS rate of 82.3% is notably lower than the other top states. That 17-percentage-point gap between California and Pennsylvania is meaningful: where you get inspected influences how this citation plays out, but no state treats it leniently.
Arizona, Georgia, New York, and Massachusetts all showed 100.0% OOS rates in our records for this period — every single citation in those states resulted in an out-of-service order.
At the carrier level, our data shows fleets such as TRANSPORTADORA NORTE DE CHIHUAHUA S A DE C V (USDOT 711125) with 75 all-time citations, and ASV XPRESS LLC (USDOT 4389301) with 22 citations, appearing at the top of our database by citation count. High citation counts at specific carriers often signal systemic loading or documentation practices that inspectors have flagged repeatedly.
How severe is this compared to similar codes
392.9AA1 sits in the Unsafe Driving category alongside codes like 392.2 (Operating a CMV while ill or fatigued), which has 1,208,164 all-time citations in our database but carries only a 0.8% OOS rate. That volume-to-OOS contrast is striking: 392.2 is cited far more often, but inspectors rarely pull drivers for it. With 392.9AA1, the opposite is true — far fewer citations in absolute terms, but a 94.9% OOS rate that means nearly every citation ends the driver's shift.
Similarly, 392.2-SLLSR (also categorized as Operating a CMV while ill or fatigued) has 191,232 citations in our records with a 0.1% OOS rate. And 392.2-SLLEQP has 72,352 citations with a 2.4% OOS rate. Even the highest-OOS peer code in this category sits at a fraction of what 392.9AA1 delivers. No other code in the Unsafe Driving category comes close to a 94.9% OOS rate in our dataset. This code is in a different severity tier than its peers.
How to avoid it
Our co-occurrence data from the last 90 days tells a clear story about what else inspectors are finding when they cite 392.9AA1. Use that pattern to build a tighter pre-trip routine:
-
Verify load securement before the key turns. With 392.9AA1 as your primary citation, every other defect on that truck is going to get written up too. In 197 shared inspections, 396.17C-PI (no proof of periodic inspection) appeared alongside this code — keep your periodic inspection documentation in the cab and current.
-
Check your Hours of Service records and method of recording. Our records show 178 shared inspections where 395.8A1-HOSP (failing to have a proper record of duty status) co-occurred. If you're getting looked at for load securement, your logbook or ELD data is going to be reviewed too.
-
Carry and verify your medical certificate. 391.41APC appeared in 172 shared inspections with 392.9AA1. An inspector who stops you for cargo issues will ask for your medical cert — know where it is.
-
Make sure all required lamps are operational. 393.9 (Inoperable Required Lamp) co-occurred in 121 shared inspections. Walk the full perimeter of your truck before departure and confirm every light required by regulation is functioning.
-
If you drive a Freightliner or FRHT-platform truck, be especially thorough. Our database shows FRHT with 1,257 citations and FREIGHTLIN with 967 citations under this code — those two makes account for the largest share of all 392.9AA1 citations by vehicle type. This may reflect the fleet composition of high-enforcement carriers, but it's a pattern worth knowing if that's what you're driving.
-
Never move a vehicle with a load you're not certain about. The 94.9% OOS rate means that once an inspector decides the load is a problem, you are not driving away. Fifteen minutes of pre-trip attention to securement is a far better outcome than an unplanned roadside shutdown.