What 387.31B3II means in plain language
387.31B3II is an administrative requirement under the Federal Motor Carrier Safety Regulations. It relates to specific documentation or record-keeping obligations that fall under the general administrative compliance category.
While the exact filing or record type is narrowly defined in the regulation, the core purpose is straightforward: your carrier or operation must maintain or produce certain paperwork during a roadside inspection. If an inspector found that documentation missing, incomplete, or improperly maintained, they issued this citation.
This is not a vehicle defect, driver qualification issue, or safety violation tied to how you operate the truck. It's a paperwork or administrative finding—which is why the enforcement and consequences are very different from mechanical or hours-of-service violations.
What our enforcement data actually shows
Across our 13 million roadside inspection records, 387.31B3II is exceptionally rare. We've recorded only 14 all-time citations for this code, with 8 citations in the last 12 months and zero citations in the last 90 days.
More importantly: the out-of-service rate for 387.31B3II is 0.0%. None of the 14 cited vehicles were placed out of service. This stands in sharp contrast to the all-FMCSR average out-of-service rate of 31.4%, and it tells you that inspectors have never deemed this violation severe enough to remove a vehicle from the road.
Ranked #2083 out of 3,036 FMCSR codes by citation frequency, 387.31B3II is in the bottom quartile. You are far more likely to encounter citations for codes related to vehicle markings, maintenance records, or brake systems.
The monthly trend over the last 12 months shows sporadic citations: one in May 2025, one in July, one in August, one in September, three in October, and one in November. There is no upward trend and no consistent seasonal pattern.
Who gets cited most
Our data shows citations for 387.31B3II are heavily concentrated in Texas, with 2 citations recorded over the last 180 days. Both Texas citations resulted in zero out-of-service placements, maintaining the 0.0% OOS rate.
The enforcement record is too sparse to meaningfully track variation across other states. Only Texas appears in the top-citation list for this code over recent inspection periods.
Top carriers cited all-time include PAN WEBERS SA DE CV, BETOS TRUCKING SA DE CV, and DFW EXPRESS LINE LLC, each with a single citation. The distribution across many small carriers and owner-operators suggests this is not a compliance gap concentrated in a particular fleet, but rather an isolated administrative finding across diverse operations.
How severe is this compared to similar codes
Within the General/Admin category, 387.31B3II sits among far more frequently cited codes. For comparison:
- 390.21TB2-DOT has logged 74,663 citations with a 0.0% OOS rate.
- 390.21T(b) shows 61,097 citations, also 0.0% OOS rate.
- 390.21TB1-MC accounts for 59,189 citations with 0.0% OOS rate.
All three peer codes are marking or vehicle-identification requirements—similarly administrative in nature, similarly non-OOS-eligible, but cited orders of magnitude more frequently. Even 390.21(b), which addresses USDOT number display, has been cited 13,244 times versus 387.31B3II's 14.
The low citation count for 387.31B3II does not indicate it is less serious legally; it reflects how infrequently the underlying condition arises in roadside inspections. Its 0.0% OOS rate aligns with the pattern for most administrative codes in the marking and documentation family.
How to avoid it
Because 387.31B3II citations are so sparse, the specific triggering condition is not always clear from enforcement data alone. However, these steps will minimize any administrative citation risk:
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Verify all required paperwork before departure. Work with your dispatcher or compliance manager to confirm you have every document an inspector might request: registration, insurance, USDOT authorization, driver qualification files, and any carrier-specific permits or endorsements.
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Keep records organized and accessible. Store copies of registration, insurance card, and any special permits in an easy-to-reach location in the cab. Inspectors expect to find these documents promptly.
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Ask your carrier about company-specific requirements. If your carrier operates under a specific regulatory classification (for-hire, hazmat, specialized cargo), confirm which additional records or placards you must carry. Administrative citations often stem from missing carrier-specific documentation.
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Conduct a pre-trip inspection of your paperwork, not just your vehicle. Just as you walk around the truck checking lights and tires, spend 30 seconds confirming your cab documentation is complete and unexpired.
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Report missing or expired documents immediately. If you discover a registration has expired or an authorization document is missing during your pre-trip routine, notify your carrier before rolling out. Do not attempt to operate with incomplete paperwork.
The good news: with a 0.0% out-of-service rate and only 14 citations in the entire TruckCodex database, this violation has minimal real-world impact on your operation. Focus on the bigger safety risks—brake systems, lighting, and hours compliance—which are cited far more frequently and carry much higher OOS consequence.