What 392.5C2 means in plain language
FMCSR 392.5C2 applies when a driver operates or is on duty in a commercial motor vehicle after being placed out of service for controlled substances or alcohol violations. This isn't the initial infraction—it's the violation that occurs when a driver ignores an out-of-service order that was already issued under FMCSR 392.5(a) or 392.5(b).
Once an officer issues an out-of-service order related to alcohol or drug use, that order is legally binding. Operating or being on duty in any CMV after receiving that order—even if you're not the one who caused the original violation—constitutes a 392.5C2 citation. The order remains in effect until it's formally removed by an authorized official.
This is a serious compliance issue because it demonstrates willful disregard of direct federal enforcement action, not just the underlying safety concern.
What our enforcement data actually shows
Our inspection records show 22 citations for 392.5C2 across all 13 million inspections in our database, with 17 issued in the last 12 months and 3 in the last 90 days. This ranks 392.5C2 at #1898 of 3,036 FMCSR codes by citation volume, making it relatively uncommon.
However, the severity profile is striking: 19 of those 22 citations—an 86.4% out-of-service rate—resulted in the driver or vehicle being placed immediately out of service. This is nearly three times the all-FMCSR average OOS rate of 31.4%. When inspectors cite 392.5C2, they remove the driver or unit from service with high consistency, reflecting the serious nature of violating an existing compliance order.
The 12-month trend shows citations scattered across multiple months, with notable clusters in September 2025 (3 citations, all OOS) and November 2025 (3 citations, all OOS). October 2025 and December 2025 each saw 1 citation with no out-of-service placement, suggesting occasional instances where the violation was documented without immediate removal.
Who gets cited most
Across the top three states in the last 180 days, enforcement has been concentrated in Iowa, Illinois, North Carolina, and Texas. Iowa leads with 4 citations, all resulting in out-of-service placement (100% OOS rate). Illinois and Texas each recorded 1 citation with 100% OOS placement. North Carolina had 1 citation that did not result in out-of-service placement (0% OOS rate).
The variation in OOS rates across these states reflects the discretionary judgment of individual inspectors and local enforcement priorities, though the dominance of 100% rates in Iowa, Illinois, and Texas underscores how seriously this violation is treated.
Our data shows carriers such as Arborscape Enterprises Inc (USDOT 4007322) with 2 citations—the highest count in our database. All other cited carriers in our records have 1 citation each, including Big League Movers Inc, La Fe Transport Inc, Brother Hotshot and Hauling LLC, Vargas Trans Inc, PNL Logistics LLC, Acker Farms Trucking LLC, Royalty Group Inc, Mid Group Inc, and B & T Trucking LLC. The distribution suggests this violation is spread across many different carriers rather than concentrated in a few fleets.
How severe is this compared to similar codes
392.5C2 occupies a specific enforcement niche within alcohol and controlled-substances violations. Comparison to peer codes in the same category reveals the relative rarity and severity:
- 392.4A-DOSP (Use of drugs) has 3,947 citations with a 95.9% OOS rate
- 392.4(a) (Use of drugs) has 3,919 citations with a 96.9% OOS rate
- 392.5A3-IDUI (Possessing intoxicating beverage on duty) has 1,478 citations with a 96.8% OOS rate
While 392.5C2's 86.4% OOS rate is slightly lower than these peer codes, the comparison underscores that violations in this regulatory family almost always trigger immediate removal from service. The lower citation volume for 392.5C2 reflects that it only occurs when a driver defies a prior order—making it a secondary violation tied to enforcement discretion and driver behavior after initial contact.
How to avoid it
The core imperative is simple: if you receive an out-of-service order related to alcohol or controlled substances, do not operate or report for duty in any CMV until it is formally lifted.
Our inspection data reveals patterns in co-occurring violations that point to underlying risk factors:
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Operating without a valid CDL (383.23A2) appeared in 2 shared inspections with 392.5C2. Before each shift, confirm your CDL is current and unencumbered. An expired or suspended license creates compounding risk.
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Fatigue and illness violations (392.2RG, 392.2C) co-occurred in 3 shared inspections. Impaired judgment from fatigue can contribute to poor decision-making around compliance. Build adequate rest into your schedule and use the hours-of-service rules as designed.
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Electronic logging device (ELD) violations (395.8A-ELD, 395.30C, 395.32B) appeared in 3 shared inspections combined. Maintain accurate, unaltered RODS records. Inspectors who detect ELD manipulation or falsification are more likely to conduct deeper safety audits that surface additional violations.
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Vehicle maintenance and inspection defects (396.9D2, 396.17C) co-occurred in 2 shared inspections. Complete pre-trip inspections thoroughly. Vehicles cited for 392.5C2 often carried other compliance gaps that could have been caught earlier.
Vehicle makes most frequently cited include Freightliner (FRHT, 5 citations), Ford (4 citations), Kenworth (KW, 3 citations), and Rams (3 citations). While vehicle make does not cause compliance violations, these represent popular units in trucking; ensure your specific unit receives proper pre-trip attention regardless of make.
Final recommendation: if you are ever contacted by an inspector regarding alcohol or controlled substances, take the interaction seriously. Know that if an out-of-service order is issued, your only path forward is compliance—not operation. Contact your carrier's safety or legal team immediately to understand your rights and the process to have the order reviewed or lifted.