What 387.403A means in plain language
387.403A falls under the general administrative and compliance requirements for commercial motor vehicle operators. The regulation addresses documentation and record-keeping obligations that carriers and drivers must maintain during operations.
When you receive a 387.403A citation, it means an inspector found a deficiency in how you or your carrier documented something required by the FMCSR. This is not a safety violation tied to your vehicle's equipment or your driving behavior—it's an administrative or record-keeping issue. The specific requirement involves maintaining accurate and complete records as mandated by federal regulation.
Unlike citations for brakes, lights, or hours-of-service violations, 387.403A cannot result in an out-of-service order. This means you were allowed to continue driving after the citation was issued. However, it still appears on your safety record and requires resolution.
What our enforcement data actually shows
Across our 13 million+ inspection records, 387.403A is enforced rarely. Our inspection database shows only 13 all-time citations for this code, with 10 citations in the last 12 months and 7 in the last 90 days. This ranks 387.403A at #2110 out of 3,036 FMCSR codes by citation volume.
The enforcement pattern is notable for one reason: the out-of-service rate is 0.0%. All 13 citations in our records resulted in drivers remaining in-service. This contrasts sharply with the all-FMCSR average out-of-service rate of 31.4%, meaning inspectors treat 387.403A violations as administrative issues rather than safety-critical defects.
Over the last 90 days, citation frequency has been steady, with activity recorded in July, August, December, February, and March of the 2025–2026 inspection cycle. February 2026 was the highest-volume month with 4 citations.
Who gets cited most
Our inspection records show that Illinois leads all states in 387.403A enforcement, with 8 citations in the last 180 days—all of which remained in-service (0.0% OOS rate). The concentration in Illinois reflects either regional enforcement focus or a concentration of affected carriers in that jurisdiction.
Among carriers in our database, KLM 20 LLC (USDOT 4459130) appears twice in the all-time citation count. The remaining citations are distributed among nine other carriers, each with a single citation. This spread suggests 387.403A violations are not endemic to any particular fleet type or operation model, but rather arise from isolated compliance gaps.
Vehicle make data shows that Ford-branded trucks account for 4 of the 13 citations. The remaining nine citations cover diverse makes (Kaufman, Freightliner, International, Freightliner chassis, RAM, Shipshe, Titanium, and van-body platforms), indicating no vehicle-specific vulnerability.
How severe is this compared to similar codes
387.403A sits in the General/Admin category alongside several high-volume administrative codes. For context, 390.21TB2-DOT generated 74,663 citations with a 0.0% OOS rate, and 390.21T(b) accumulated 61,097 citations with 0.0% OOS rate. Even the lower-volume peer code 390.21(b) (USDOT number not displayed) recorded 13,244 citations—more than 1,000 times the citation count for 387.403A.
The 0.0% OOS rate for 387.403A is identical to most administrative marking and documentation codes in this category. This reflects the regulatory reality: administrative violations are cited and settled but do not trigger immediate removal from service. A driver cited for 387.403A is in a substantially lower-risk enforcement outcome category than drivers cited for mechanical or hours-of-service violations.
How to avoid it
Based on the violations that most commonly appear alongside 387.403A in the same inspection, focus on these practices:
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Maintain your electronic logging device (ELD) correctly. The data shows that 395.8A (failing to keep RODS—records of duty status) appears in 7 of the last 90 days of inspections involving 387.403A. Ensure your ELD entries are complete, accurate, and submitted on time. Verify your vehicle location, duty status changes, and unidentified driving time before inspection.
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Keep accurate records of duty status and driving time. False record entries (395.8E) and false entries in general (390.35) co-occur with 387.403A. Do not back-date, round, or guess your duty status. If you made an error, correct it with a note explaining the change rather than altering the original entry.
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Know your physical fitness for duty. Six inspections show 392.2 violations (operating while ill or fatigued) occurring alongside 387.403A. This suggests that when drivers are fatigued or unwell, documentation errors increase. If you are exhausted, ill, or impaired, do not drive. Pull over, rest, and address the issue before resuming.
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Conduct a pre-trip inspection and verify operational status. Three inspections show 393.9 (inoperable required lamps) co-occurring with 387.403A. While lamp failures are mechanical, documenting pre-trip inspection results protects you if a defect becomes apparent during roadside inspection. Record what you checked and when.
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Coordinate with your carrier on compliance procedures. If you drive for a small or mid-sized fleet, confirm your carrier's procedure for correcting records, uploading documents, or flagging defects. Many 387.403A citations stem from missing signatures, incomplete forms, or delayed submissions to your carrier rather than driver error.