What 393.95K-EE means in plain language
When your commercial motor vehicle is stopped on the side of a road, federal regulations require you to deploy warning devices so other drivers can see you in time to react. One of those requirements concerns physical flags — specifically, the flags you carry as part of your emergency equipment kit must meet a minimum size standard. Code 393.95K-EE is written against drivers and carriers whose flags fall short of that size requirement.
This is not about whether you have flags or whether you deployed them correctly. It is specifically about the physical dimensions of the flags themselves. If the flags in your kit are too small to meet the federal standard, you are in violation even if everything else about your emergency equipment setup is technically correct.
The practical takeaway is simple: your warning flags need to be big enough. A flag that looks serviceable, or one that came in the original emergency kit years ago, may no longer be adequate if it has faded, frayed, or was undersized from the start. This is a pre-trip checkable item, and the citation is entirely avoidable.
What our enforcement data actually shows
Across our 13 million+ inspection records, 393.95K-EE has generated 2,525 all-time citations. In the last 12 months alone, our data shows 1,628 citations, and in just the last 90 days, 309 more were recorded. This is not a rare or obscure citation — it ranks #487 out of 3,036 FMCSR codes by total citation volume nationally.
One important fact that should give you some relief: the out-of-service rate for 393.95K-EE is 0.0%. Every single one of the 2,525 all-time citations in our database resulted in the driver continuing their trip. You were not placed out of service, and no one ever has been for this code in our records. To put that in perspective, the all-FMCSR average OOS rate is 31.4%. This code sits at the absolute floor.
That said, 0.0% OOS does not mean zero consequences. The citation still appears on your inspection record, still factors into your carrier's safety scores, and still contributes to CSA points that can draw attention to your fleet. The monthly trend data in our database shows this code has been consistently active, with citation counts ranging from 100 to 173 per month over the past year. Enforcement is not slowing down.
Who gets cited most
Looking at the last 180 days, California leads all states with 116 citations, followed by Pennsylvania with 92 and New Jersey with 48. New York adds 33 and Florida 27. All five of these states show a 0.0% OOS rate, consistent with the national picture for this code.
OOS-rate variation across the top states is not a factor here — every state in our top-ten list sits at exactly 0.0%, so enforcement outcomes are uniform regardless of where you were stopped.
On the carrier side, our data shows fleets such as Federal Express Corporation (USDOT 86876) with 7 all-time citations and SAKARA LLC (USDOT 4429530) with 5 citations appearing at the top of the citation list. The presence of large, professionally managed fleets in this data makes clear that even carriers with formal maintenance programs can miss this specific equipment detail.
Looking at vehicle makes, FORD units account for 496 all-time citations — by far the most of any make in our records. Freightliner variants (listed as both FREIGHTLIN and FRHT) combine for 343 citations. DODGE and RAM together add another 191. If you operate one of these makes, your vehicle is statistically among the most commonly cited, which makes checking your emergency kit before every run more important, not less.
How severe is this compared to similar codes
Within the Vehicle Maintenance category, 393.95K-EE's 2,525 all-time citations look modest compared to some of the highest-volume codes in the same space. Consider 393.9(a) — Inoperable Required Lamps, which has accumulated 660,737 citations in our database and carries a 15.4% OOS rate. Or 396.3(a)(1) — Inspection/Repair/Maintenance General, which has 236,919 citations and a 45.3% OOS rate — meaning nearly half of all drivers cited under that code were placed out of service on the spot.
By contrast, 393.95K-EE's 0.0% OOS rate means your trip continues after the citation. The severity profile is fundamentally different. Even 396.17C-PI — No Proof of Periodic Inspection, a paperwork violation with 212,081 citations and a 0.0% OOS rate — is cited roughly 84 times more often than 393.95K-EE. In raw volume and operational disruption, this code is on the lower end of the severity spectrum, though the regulatory obligation is real and the citation still counts.
How to avoid it
The co-occurring violation patterns in our last-90-days data tell a clear story: 393.95K-EE does not show up in isolation. It appears alongside 116 inspections that also caught 393.95A1 (no fire extinguisher or improperly rated extinguisher) and 33 inspections that added 393.95A4-EEUS (unsecured fire extinguisher). Emergency equipment as a whole is being inspected closely in the same stops that produce this citation. That means a thorough emergency kit check is your single most effective prevention step.
Here is what to do before every run:
- Inspect your warning flags physically, not just visually. Pull them out of the kit and confirm the size is adequate. A flag that has been folded in a box for two years may be too degraded or may never have met the standard to begin with. Replace it if there is any doubt.
- Check your fire extinguisher at the same time. Our data shows 116 shared inspections where both 393.95K-EE and a fire extinguisher violation appeared together. If your flags are substandard, your extinguisher situation may also be off. Verify it is present, properly rated, and secured.
- Confirm your full emergency kit is complete and accessible. With 72 shared inspections also catching a no-proof-of-periodic-inspection violation (396.17C-PI), inspectors running this check are doing thorough walk-arounds. Do not give them additional items to write.
- If you operate a FORD, Freightliner, DODGE, or RAM, be aware that these makes account for the largest share of citations in our records. Make your pre-trip emergency equipment check a non-negotiable step, not a quick glance.
- Do not assume the kit that came with the truck is still compliant. Kits age, flags shrink and fray, and replacement items bought at a truck stop may not meet size requirements. Verify what you have against the standard, not against what you remember.
The citation is irritating, but it is also one of the most preventable on the books. A two-minute check of your emergency equipment kit before you pull out of the yard eliminates this violation entirely.