What 392.64 means in plain language
FMCSR 392.64 prohibits anyone from riding inside the fully enclosed cargo area of a commercial motor vehicle when there are no emergency exits available. This regulation exists because cargo holds can become dangerous traps if a vehicle crashes, breaks down, or experiences an emergency. A driver or passenger trapped inside a sealed container without an emergency way out faces serious risk of injury, heat exhaustion, or worse.
The rule is straightforward: if you or another person is being transported inside a closed commercial vehicle body—like a sealed van, box truck, or trailer—that space must have functional emergency exits. No exits means no riding inside. This applies whether you're a driver, a helper, a passenger, or anyone else occupying that compartment during transport.
What our enforcement data actually shows
Across our 13 million inspection records, 392.64 is a rare citation. All-time, we see 23 total citations for this violation, ranking it #1881 of 3,036 FMCSR codes by citation volume. In the last 12 months, inspectors issued 7 citations; in the last 90 days, just 2.
Crucially, none of the 23 citations resulted in an out-of-service order—the OOS rate is 0.0%. For context, the all-FMCSR average OOS rate is 31.4%, so this violation is cited but almost never escalates to vehicle removal from service. This suggests inspectors typically treat it as a correctable issue rather than an immediate safety shutdown.
The scarcity of citations is the key takeaway. You're dealing with a violation that enforcement agencies pursue infrequently, but when they do, it's documented and will appear on your record.
Who gets cited most
Over the last 180 days, our data shows Texas accounted for 4 citations—the only state appearing in our enforcement snapshot. All 4 Texas cases resulted in no out-of-service placement, consistent with the national 0.0% OOS rate.
No carrier in our database shows a pattern of repeat 392.64 citations. Our top 10 carriers by all-time count each have only 1 citation, including operations such as Marten Transport Ltd, US Xpress Inc, and Julian Alcazar. This distribution suggests the violation is scattered across many fleets rather than concentrated in any single operation, pointing to occasional lapses in procedure rather than systemic non-compliance.
How severe is this compared to similar codes
392.64 falls under the Unsafe Driving category alongside other vehicle-operation violations. When we look at related codes in the same category, the contrast is striking.
The most-cited peer, 392.2 (Operating a CMV while ill or fatigued), has accrued 1,208,164 citations all-time with a 0.8% OOS rate. Another high-volume variant, 392.2-SLLSR, logged 191,232 citations at 0.1% OOS. Even the least-cited peer variants in our comparison set exceed 69,000 citations. By this measure, 392.64 at 23 all-time citations is exceptionally uncommon—it's enforced at roughly 1% of the frequency of its closest category cousins.
The low OOS rate (0.0% vs. the category norm of roughly 0.1%–2.4% across variants) reinforces that when 392.64 appears, it's typically treated as a correctable violation rather than a grounds-for-removal defect.
How to avoid it
Preventing a 392.64 citation requires basic pre-trip discipline:
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Verify emergency exits before loading or accepting passengers. Walk the cargo area or passenger compartment before anyone enters. If you're driving a box truck, van, or enclosed trailer carrying people, confirm that emergency doors, windows, or roof hatches are present and functional. Do not allow anyone to ride in a sealed space without a confirmed way out.
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Inspect door and hatch hardware on your pre-trip walk-around. Our enforcement data shows that lighting and mechanical defects co-occur with 392.64 citations—specifically, we see inoperable lamps and fastening failures appearing in the same inspections. This pattern suggests vehicles cited for 392.64 often have other deferred maintenance. Check that emergency exits open smoothly and latches are secure.
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Know your vehicle layout. If you operate box trucks, enclosed trailers, or vans, familiarize yourself with where emergency exits are located. Many vehicles have roof hatches or side emergency doors that drivers may not immediately recognize, especially if the vehicle is unfamiliar or newly assigned to you. Read the vehicle manual or ask your dispatcher.
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Never transport people in cargo holds. 392.64 exists because someone tried it. Do not allow helpers, hitchhikers, or off-duty drivers to ride in sealed cargo bays. If you need to move additional people, use the cab or certified passenger seating areas only.
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Document pre-trip compliance during inspections. If an inspector asks about emergency exits during a roadside check, walk them through your pre-trip findings. This is not a violation that catches most drivers; it catches those who either skip the check or who consciously transport people in unsafe spaces.
The enforcement rarity (7 citations in 12 months nationally) means you're unlikely to face this citation unless you're doing something obviously unsafe. But if you are cited, the lack of OOS consequences means you can typically correct the issue and move on. The real cost is the citation itself—recorded on your DAC report and factored into your safety rating.