What 365.511MX means in plain language
365.511MX is a relatively obscure FMCSR violation that appears rarely in roadside enforcement. Our inspection records show only 1 citation for this code across our entire 13 million+ inspection database, making it one of the least frequently cited violations in the federal Motor Carrier Safety Regulations.
While the exact regulatory text is specialized, this code addresses a specific compliance requirement within the FMCSR framework. If you received a citation for 365.511MX, it means an inspector determined you or your vehicle failed to meet a requirement tied to this regulation. Because enforcement of this code is so infrequent, many drivers and smaller fleets may never encounter it.
What our enforcement data actually shows
Across our 13 million+ real roadside inspection records, 365.511MX ranks #2796 out of 3,036 FMCSR codes by citation volume. This code is extremely rare in the field.
Our all-time data shows only 1 citation for 365.511MX. In the last 12 months, we recorded 1 citation. Over the last 90 days, 1 citation appeared in our database.
Regarding out-of-service (OOS) outcomes: the 1 citation on record resulted in the vehicle or driver being placed out of service, giving this code a 100.0% OOS rate. For context, the all-FMCSR average OOS rate is 31.4%, meaning when 365.511MX violations are cited, they result in OOS placement at a rate significantly higher than the typical FMCSR code.
Who gets cited most
Our inspection records show only the United States with 1 citation in the last 180 days, resulting in an OOS placement and a 100.0% OOS rate.
Because enforcement volume is so low, geographic variation is not material. Our data shows the cited vehicle was a Kenworth, though the limited sample size means no meaningful pattern emerges about specific makes or models.
Regarding carriers, our all-time data indicates citation activity associated with a carrier identified by USDOT 4129943, though the single-citation volume means fleet-level conclusions cannot be drawn.
How severe is this compared to similar codes
When compared to related FMCSR codes, 365.511MX sits at an extreme in terms of both rarity and severity. For example, 376.11(d)(1) has accumulated 6,383 citations with a 0.0% OOS rate, indicating it is cited far more frequently but rarely results in OOS placement. Similarly, 107.620(b) shows 2,120 citations with only a 0.2% OOS rate.
In contrast, 365.511MX's 100.0% OOS rate reflects that when this violation does occur, it is treated with maximum severity by inspectors. Other comparable codes like 376.11D1 (1,258 citations, 0.0% OOS rate) and 107.620B (486 citations, 0.0% OOS rate) are cited much more often but result in far fewer OOS placements, suggesting 365.511MX addresses a critical safety or compliance issue when it is detected.
How to avoid it
Because 365.511MX citations are so rare, detailed prevention guidance is limited by available data. However, our inspection records show that when 365.511MX was cited, it occurred alongside three other violations in the same inspection:
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Brake system defects: 393.47E (Slack adjuster defective) co-occurred with the cited inspection. Conduct a thorough pre-trip inspection of all brake components, paying close attention to slack adjusters, which should move smoothly and fully engage and release.
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Steering system wear: 393.53B-B (Steering system components worn) was documented in the same inspection. Before each shift, check your steering wheel for excessive play, test steering responsiveness at various speeds, and ensure all steering linkage components are tight and free from visible damage or wear.
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Tire pressure and condition: 393.75A3-TAOL (Tires with underinflation below 50% of maximum pressure) co-occurred. Use a reliable tire gauge to verify all tire pressures meet or exceed the manufacturer's specification, especially after long periods parked. Check for visible cracks, bulges, or uneven wear, and ensure tires are appropriate for your vehicle.
While this single citation does not establish a causal pattern, the cluster of brake, steering, and tire violations in the same inspection suggests that rigorous pre-trip vehicle inspection and maintenance of these three systems may reduce your risk.