387.403A FMCSR Citation: What You Need to Know

No. Across our 13 million inspection records, 387.403A has never resulted in an out-of-service order—the OOS rate is 0.0% across all 13 all-time citations. For context, the national average OOS rate across all FMCSR codes is 31.4%, so this violation is far less likely to sideline your truck than most others you might encounter.

This is a minor administrative violation. Our inspection data shows 387.403A ranks #2110 out of 3,036 FMCSR codes by citation frequency, with only 13 all-time citations in our database. Compare that to peer codes in the same General/Admin category—390.21TB2-DOT has 74,663 citations and 390.21T(b) has 61,097—and you can see 387.403A is cited far less often. It's also non-equipment, so it won't trigger an immediate repair requirement.

First, check your records and documentation. Our data shows 387.403A frequently appears in the same inspection with electronic logging device (ELD) and duty status record violations—7 out of the last 90 days' citations co-occurred with 395.8A-ELD (failing to keep records of duty status). Review your RODS and logs for completeness. Second, verify your vehicle registration and medical certification status, since 387.403A often co-occurs with fitness violations. Third, contact your carrier's compliance team within 24 hours to ensure proper documentation of the citation.

This code applies to both driver and carrier records under FMCSA's CSA system. The violation tracks to both your personal BASIC profile and your carrier's safety rating. If you're an independent operator, it impacts only your own record. If you're leased or employed, the citation contributes to both your driving record and your carrier's CSA score, which affects their insurance costs and DOT scrutiny.

Illinois dominates the citation volume for this code. In the last 180 days, Illinois accounted for 8 citations—all with a 0.0% out-of-service rate. Our data doesn't show citations in other states during that period, suggesting this violation is either enforcement-concentrated in IL or occurs rarely elsewhere. If you operate in Illinois, heighten your focus on the documentation and administrative practices that trigger this code.

The trend is volatile but minimal overall. Our records show 1 citation in July 2025, 1 in August, then a spike to 4 citations in February 2026 and 3 in March 2026. With only 10 citations in the last 12 months out of 13 all-time, the sample is too small to call a sustained trend, but the recent cluster in early 2026 suggests episodic enforcement activity rather than a systemic crackdown.

Yes, you can challenge any FMCSR citation through the Safety Management System (SMS) DataQS process, which allows you to submit evidence that the violation was incorrect or that the fact pattern doesn't match the regulation. For administrative violations like 387.403A, your best defense is documentary proof—correct records, valid certifications, or logs that show compliance at the time of inspection. Gather all supporting documents and file your DataQS challenge within the FMCSA's submission window, typically 90 days from the inspection date.

Ford vehicles lead the list with 4 citations in our database, followed by Kaufman (KAUF) with 2 citations. The remaining citations are scattered across single instances each: Freightliner (FRHT), other FRT units, Isuzu, Ford medium-duty (FRDM), Ram, and specialty units. No single make dominates, suggesting this violation is not equipment-specific and relates instead to driver or carrier record-keeping practices.