What 374.313B-PC means in plain language
374.313B-PC is a relatively uncommon FMCSR citation. While the regulation addresses specific compliance requirements for commercial vehicle operation, enforcement of this particular code is extremely rare in the field. When officers cite it, they are typically responding to a specific operational or documentation issue that fell outside normal roadside inspection patterns.
The low citation volume suggests that most drivers and fleets operate in compliance with the underlying requirement, or that inspectors encounter the violation infrequently enough that it does not rank among the most common grounds for citation.
What our enforcement data actually shows
Across our 13 million+ inspection records, 374.313B-PC has generated only 8 citations all-time, with 0 citations in the last 12 months and 0 in the last 90 days. This code ranks #2269 of 3,036 FMCSR codes by citation volume—placing it well below the enforcement baseline.
More importantly for your situation: none of the 8 all-time citations resulted in an out-of-service order. The 0.0% OOS rate for this code stands in sharp contrast to the all-FMCSR average of 31.4%, meaning inspectors have consistently determined that violations of 374.313B-PC do not warrant immediate vehicle removal from service. This suggests the violations cited are correctable deficiencies rather than safety-critical failures.
The complete absence of citations in the last 90 days and 12 months also indicates that enforcement pressure on this code is essentially dormant. If you received a citation now, you are part of a very small, recent enforcement wave.
Who gets cited most
Our inspection records show that TUFESA USA LLC (USDOT 1215199) accounts for 5 of the 8 all-time citations for this code. The remaining three citations are distributed across PRIMAVERA TOURS LLC, SALAMANCA TOURS LLC, and AUTOBUSES EJECUTIVOS LLC, with one citation each. The concentration of citations among a small number of carriers—particularly those operating in the motorcoach and tour bus sector—suggests the violation may be tied to specific operational or fleet management practices common to that segment rather than a widespread industry issue.
No state-level breakdown is provided in our data, so we cannot isolate regional enforcement variation for this code.
How severe is this compared to similar codes
376.11(d)(1) is the most-cited peer code in this regulatory family, with 6,383 citations and a 0.0% OOS rate—demonstrating that even high-volume citations in this category rarely result in vehicle removal. 107.620(b) follows with 2,120 citations and a similarly low 0.2% OOS rate. 999 is the only peer code showing elevated OOS enforcement at 12.1%, but that code has accumulated 4,802 citations, roughly 600 times the volume of 374.313B-PC.
The pattern across peer codes is clear: violations in this regulatory space are treated as correctable deficiencies. Your 0.0% OOS rate aligns with the enforcement posture of the entire category.
How to avoid it
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Review the citation notice carefully. Because this code is cited so rarely, the specific violation noted on your citation will be your most reliable guide to what went wrong. Do not assume a pattern—enforcement of 374.313B-PC is too infrequent to establish clear trigger patterns.
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Conduct a pre-trip inspection focused on documentation and operational compliance. Most violations in this low-OOS category stem from paperwork, record-keeping, or procedural oversights rather than mechanical defects. Check that all required logs, manifests, or certifications are complete and accurate before departure.
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If you operate a motorcoach or tour bus, be aware that this code has shown up disproportionately in that segment. Work with your dispatcher or safety manager to confirm that all operational procedures align with current FMCSR requirements, particularly those affecting passenger carriers.
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Do not ignore the citation. Although enforcement is rare and OOS rates are zero, a citation still creates a compliance record. Respond to the notice according to the instructions provided, and if the violation was correctable (which the 0.0% OOS rate suggests it was), document the correction for your records.