What 392.71(b) means in plain language
392.71(b) falls under the unsafe driving category of FMCSR regulations. This code addresses specific unsafe operating practices that inspectors identify during roadside checks. The regulation focuses on driver behavior and vehicle operation that creates safety risks on public roads.
When an officer cites you for 392.71(b), they're documenting an observed unsafe driving practice captured under this particular subsection. Understanding the exact nature of what was observed on your citation report is the first step—the inspector's notes will clarify which specific unsafe behavior triggered the citation.
This is a driving-related violation, not a mechanical defect. That means your response centers on driver training, decision-making, and awareness rather than equipment repair.
What our enforcement data actually shows
Across our 13 million+ inspection records, 392.71(b) has generated 7 all-time citations, with 0 citations in the last 12 months and 0 in the last 90 days. None of those 7 citations resulted in an out-of-service order—the OOS rate is 0.0%.
For context: the all-FMCSR average out-of-service rate is 31.4%. A 0.0% OOS rate on 392.71(b) means that in every case where this code was cited, the driver and vehicle remained in-service to continue operations. This does not mean the violation is harmless—it reflects only the immediate enforcement outcome at that particular inspection.
392.71(b) ranks #2312 of 3,036 FMCSR codes by citation volume, making it a relatively uncommon citation in the national database. The rarity of this code should not be misread as safety irrelevance; it may reflect the specificity of the violation or the conditions under which inspectors detect it.
Who gets cited most
Our inspection records show that citations for 392.71(b) are distributed across multiple small carriers rather than concentrated in any single fleet. The seven all-time citations are spread among seven different carriers, each with one citation: C & K Trucking LLC, Cooper Asphalt & Paving, Liftra USA Inc, Oasis Port Transportation Inc, MBC Transportation LLC, Spirit Cargo LLC, and Eco Metal Recycling LLC. No carrier concentration pattern is visible in this violation.
The vehicle data shows citations issued against Hyundai TR, Ford, Unpublished, and Freightliner models (2 citations each), with single citations on Volvo, CIMC, International, and Chevrolet units. This broad distribution suggests the violation is not tied to specific truck models or makes.
Without state-level data in our current sample, we cannot identify geographic hotspots for this violation. If you operate in a specific region, your local CVSA office can provide state-level enforcement trends.
How severe is this compared to similar codes
392.71(b) sits in the same unsafe driving category as several other commonly cited violations. By volume and enforcement intensity, the comparison is stark:
- 392.2 (Operating a CMV while ill or fatigued) has recorded 1,208,164 citations with a 0.8% OOS rate—roughly 170,000 times more common than 392.71(b).
- 392.2-SLLSR (a variant of fatigue/illness) shows 191,232 citations with a 0.1% OOS rate.
- 392.2-SLLTCD (another fatigue-related variant) has 85,391 citations and a 0.0% OOS rate, matching 392.71(b)'s zero out-of-service outcome.
The frequency disparity underscores that 392.71(b) describes a narrower, more specific unsafe driving infraction than the broad fatigue/illness category. Your citation is less common but equally subject to enforcement.
How to avoid it
Based on the vehicle makes and the unsafe driving category, here are driver-focused actions to avoid future citations:
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Pre-trip vehicle walk-around: Inspect tires, lights, mirrors, and wipers before departure. Many unsafe driving citations correlate with vehicles that have visibility or handling deficiencies. A thorough walk-around catches issues before they lead to unsafe operation.
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Maintain focus and alertness: Unsafe driving violations reflect momentary or repeated lapses in attention. Eliminate distractions—secure your phone, stay hydrated, and take breaks before fatigue sets in. Drowsiness and inattention are root causes of unsafe behavior citations.
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Know your route and speed limits: Part of safe driving is matching your speed and following distance to road conditions and posted limits. Review your route the night before, especially unfamiliar roads or challenging weather zones.
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Use your mirrors constantly: Unsafe driving often involves improper lane changes, merging, or turns. Develop the habit of checking mirrors every 5–8 seconds and before any maneuver. Train yourself to assume blind spots exist and act accordingly.
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Reduce speed in marginal conditions: Rain, fog, ice, or high winds increase the likelihood that an inspector will perceive your driving as unsafe relative to conditions. Slow down proactively and increase following distance.
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Avoid rush or fatigue: Citations spike when drivers feel time pressure or are already tired. If you're fatigued, pull over. If dispatch is pushing unrealistic timelines, communicate honestly about your limits.
Your citation is on record and may affect your CSA scores and carrier safety record. Fleet managers reviewing your history will see this violation. Focus your next miles on textbook safe driving: smooth throttle inputs, predictable lane positioning, appropriate speed, and constant mirror scanning. Safe driving is both a legal obligation and the most reliable way to avoid future roadside enforcement.