What 392.5C2-IOOS means in plain language
This citation means an enforcement officer issued you a roadside out-of-service order specifically about intoxicating beverages—and you violated it. The violation is not simply having alcohol in your possession or being under the influence; it's the act of breaking an explicit order that was delivered to you on the roadside.
When a law enforcement officer or inspection authority determines a concern related to intoxicating beverages, they have the authority to place a driver out of service. This order is a direct instruction: you cannot operate a commercial motor vehicle under the terms of that order. Violating it—by continuing to drive or operate the vehicle in defiance of that order—is what triggers a 392.5C2-IOOS citation.
Understand the distinction: you received a formal roadside directive, and the citation reflects your non-compliance with it. This is why the consequences are severe and warrant immediate attention.
What our enforcement data actually shows
Our inspection records show that 392.5C2-IOOS is a low-volume citation overall. Across our database of 13 million+ roadside inspections, we have recorded 15 all-time citations for this code, with 10 citations in the last 12 months and zero citations in the last 90 days.
What makes this code serious despite its low volume is the out-of-service rate. Among the 15 all-time citations, 14 drivers were placed out of service—a rate of 93.3%. For context, the all-FMCSR average out-of-service rate is 31.4%. This means 392.5C2-IOOS citations result in removal from duty nearly three times as often as the typical FMCSR violation. When an enforcement officer issues a roadside out-of-service order for intoxicating beverages and a driver violates it, that driver is almost certainly removed from service immediately.
Nationally, this code ranks #2050 out of 3,036 FMCSR codes by citation volume. The rarity of citations combined with the extreme likelihood of an out-of-service placement underscores how seriously enforcement treats violations of explicit roadside directives in this category.
Who gets cited most
Our data shows enforcement activity is concentrated in Colorado, where 2 citations occurred in the last 180 days, both resulting in out-of-service placements for a 100.0% OOS rate.
Because citation volume for this code is very low nationwide, no other states appear in our top-states list for the past 180 days. The historical record shows citations scattered across individual carriers, each with only one or two occurrences in our all-time data. This pattern reflects the rarity of roadside out-of-service orders for intoxicating beverages being issued and then violated.
How severe is this compared to similar codes
Within the controlled substances and alcohol category, 392.5C2-IOOS sits alongside codes addressing broader alcohol-related conduct. For comparison:
392.5A3-IDUI (possession of intoxicating beverage while on duty) has generated 1,478 citations all-time with a 96.8% out-of-service rate. This code covers the underlying offense—having alcohol in your possession as a commercial driver—rather than the specific violation of breaking a roadside order.
392.5A2-IP (under the influence or detected presence of alcohol) shows 691 citations all-time and a 99.0% out-of-service rate. This addresses impairment or measurable alcohol presence directly.
392.5(a)(2) (BAC 0.04 or higher) reflects 778 citations with a 99.2% out-of-service rate. This is a hard, measurable threshold.
The 93.3% out-of-service rate for 392.5C2-IOOS is slightly lower than these peer codes, but the practical outcome is identical: removal from duty is the overwhelming default response. The critical difference is that 392.5C2-IOOS specifically penalizes defiance of an explicit order—which may explain why it is cited so rarely. Most drivers comply with a roadside out-of-service directive.
How to avoid it
The only way to violate 392.5C2-IOOS is to receive a roadside out-of-service order about intoxicating beverages and then break it. Prevention means two things:
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Never operate or attempt to operate your vehicle after receiving a roadside out-of-service order, for any reason. If an enforcement officer places you out of service, that decision is final at that moment. Your only recourse is administrative review or legal challenge afterward—not immediate defiance. Accepting the order and complying is non-negotiable.
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Avoid the circumstances that trigger a roadside out-of-service order in the first place. Do not possess intoxicating beverages in your cab, sleeper berth, or any accessible part of your vehicle while on duty or operating. Do not operate a commercial motor vehicle if you have consumed alcohol recently or have any detectable alcohol concentration. Pre-trip inspection should include verifying your cab and vehicle are free of alcohol. During your shift, maintain absolute sobriety and never accept alcohol from shipper personnel, other drivers, or rest-stop contacts.
The low citation count for this code suggests most drivers never face this situation. Staying completely clear of alcohol while in uniform or on duty, and immediately complying with any enforcement order you receive, keeps you safe.