What 392.5A3 means in plain language
FMCSR 392.5A3 prohibits you from having alcohol in your possession while you are on duty, operating a commercial motor vehicle, or in physical control of one. The regulation does not require proof that you consumed the alcohol or were impaired—only that you had it in your possession in those circumstances.
"On duty" means any time you are logged in or required to be available. "Operating or in physical control" covers the moment you have the keys or are in a position to move the vehicle. This applies to any type of beverage containing alcohol, regardless of the percentage or type.
If you are cited for 392.5A3, the inspector found alcohol—beer, wine, spirits, or any other alcoholic beverage—on or near your person, in the cab, or in areas you can readily access while driving.
What our enforcement data actually shows
Our inspection records show 353 all-time citations for 392.5A3, with 198 citations in the last 12 months and 44 in the last 90 days. Across our 13 million inspection records, this violation ranks #1031 by citation volume among 3,036 FMCSR codes.
The most striking fact: a 99.2% out-of-service rate. Across all FMCSR codes, the average out-of-service rate is 31.4%. This code is enforced at more than three times that severity. Of the 353 all-time citations, 350 resulted in out-of-service placement, and only 3 did not. The data shows this violation is treated as nearly automatic grounds for removing you from service.
The trend over the last 12 months shows volatility month to month. May 2025 saw 20 citations, July 2025 peaked at 25 citations, and September 2025 had 23. Recent months (February and March 2026) remained elevated at 19 and 21 citations respectively. This suggests the violation is not declining and warrants consistent attention from safety programs.
Who gets cited most
Our data shows concentration in three states over the last 180 days:
- Iowa: 36 citations, 100.0% out-of-service rate
- Texas: 32 citations, 100.0% out-of-service rate
- Illinois: 11 citations, 100.0% out-of-service rate
All three states show a uniform 100% OOS rate, meaning every driver cited in these states was pulled out of service. North Carolina and New Mexico follow with smaller numbers but identical enforcement patterns.
Across all-time data, citations have been distributed across many carriers. Our records show fleets such as New Prime Inc with 3 citations, and M A Mortenson Company and J B Hunt Transport Inc each with 2 citations. No single carrier dominates the violation history, suggesting this is a driver-behavior issue rather than a fleet-wide training gap in any one organization.
How severe is this compared to similar codes
392.5A3 sits within a cluster of alcohol and drug-related violations. The peer code comparison is instructive:
- 392.5A3-IDUI (Intoxicating – possession while on duty): 1,478 citations, 96.8% OOS rate
- 392.5(a)(3) (Driver having possession of alcohol while on duty): 1,301 citations, 98.2% OOS rate
- 392.4A-DOSP (Use of drugs): 3,947 citations, 95.9% OOS rate
Your violation (392.5A3) has accumulated 353 citations and a 99.2% OOS rate. The nearly identical code 392.5(a)(3) has higher volume (1,301 citations) but a slightly lower OOS rate at 98.2%. This suggests your specific code variant is enforced more aggressively, or the circumstances tend to be clearer-cut.
Drug-related codes (392.4A-DOSP) occur far more frequently (3,947 citations) but carry a marginally lower OOS rate (95.9%). The message is clear: alcohol and drug possession violations are among the most severe enforced on roadways, with OOS rates consistently above 95%.
How to avoid it
The most direct way to avoid a 392.5A3 citation is to have zero alcohol in your vehicle during your duty hours. However, our co-occurring violation data reveals secondary patterns worth addressing:
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Do not carry alcohol in the cab or sleeper during any on-duty period. Store any personal alcohol in sealed, locked compartments (trunk, storage shed) not accessible during driving. Do not transport it in the cargo area of a flatbed or utility trailer where you can reach it while on duty.
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Pre-trip inspection must include a compartment sweep. Our data shows that 393.9 (Inoperable Required Lamp) co-occurs in 10 of the last 90-day inspections alongside alcohol possession, suggesting inspectors are conducting thorough vehicle checks. Before departure, verify your cab is empty: under seats, door pockets, behind the seat, under the bunk, in storage lockers. A single forgotten can or bottle costs you your out-of-service status.
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Separate personal items from vehicle operations time. If you are on duty but have a break, do not access alcohol. The regulation applies "while on duty," and off-duty breaks do not remove you from the duty clock if you are required to be available.
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Be aware of vehicle type risk. Our top vehicle makes cited show freight haulers (100 FRHT citations), utility trailers (39 UTIL citations), and Kenworth tractors (38 KW citations) appear frequently. If you operate these vehicle types, the likelihood of roadside inspection is higher, and enforcement is more visible. Tripled vigilance is required.
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Understand co-occurrence with fatigue violations. The data shows 392.2RG (Operating while ill or fatigued) and 392.2 (Operating while ill or fatigued) co-occur in 8 and 5 inspections respectively in the last 90 days. Inspectors may be more likely to check for alcohol if they suspect driver condition issues. If you are fatigued or unwell, do not compound that risk with any alcohol nearby.
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Do not assume "off-duty" storage is acceptable in the vehicle during overnight. If you overnight in the cab and move the vehicle—even to reposition at a truck stop—you are now in physical control. Alcohol must not be in the vehicle.
The 99.2% out-of-service rate means there is effectively no gray area in enforcement. Your best defense is absolute prevention.