FMCSR 390.403(a) Citations: What Drivers Need to Know

No. Across our inspection database, 390.403(a) citations have resulted in zero out-of-service placements—a 0.0% OOS rate across all 394 all-time citations. This code is not OOS-eligible, meaning inspectors cannot immediately remove your truck from service for this violation. That said, it still creates a compliance record and should be addressed promptly to avoid cascading violations.

This is a relatively uncommon citation. Our data shows 390.403(a) ranks #999 out of 3,036 FMCSR codes by enforcement volume, with only 394 citations on record. For context, peer codes in the General/Admin category—like 390.21TB2-DOT with 74,663 citations—are cited far more frequently. Both this code and most peer codes carry a 0.0% OOS rate, placing them in the lower-severity tier compared to the 31.4% all-FMCSR average OOS rate.

First, get a copy of the inspection report and understand which specific requirement you allegedly violated. Document any corrective actions you take. If the citation is equipment-related, photograph evidence of repair or replacement. Contact your carrier's compliance or safety team if you drive for a fleet. File a DataQs report if you believe the citation is inaccurate—the FMCSA's DataQs system allows drivers and carriers to contest roadside inspection findings within 90 days. Keep records of all communications and corrective measures.

This code is rarely cited in current enforcement. Our records show zero citations in the last 12 months and zero in the last 90 days, despite 394 all-time citations on file. This suggests the violation may have been common in the past but is now uncommon—possibly due to changes in enforcement focus, regulation updates, or widespread compliance. If you receive a citation today, it warrants careful review.

Freightliners dominate the citation count, with 66 all-time citations—nearly three times more than the next-most-cited make (Kenworth and International, each with 23). Among carriers, Penske Truck Leasing, Jose Timoteo Acosta Garcia, and Transportes Larmex each have 3 citations. The concentration in Freightliners suggests the violation may relate to a specific equipment or documentation pattern common to that manufacturer.

Yes. The FMCSA's DataQs (DataQuality Services) system allows you and your carrier to challenge any roadside inspection finding within 90 days of citation. To file a DataQs report, log into the Safety Management System (SMS), navigate to the inspection record, and select 'Contest Finding.' Provide detailed evidence—photographs, receipts, maintenance logs, or regulatory documents—that refutes the violation. DataQs requests do not automatically expunge the citation but trigger FMCSA review if evidence is compelling.

Both. FMCSA roadside inspection records are linked to driver credentials (via license number) and carrier DOT numbers. The citation appears in your driver history and the carrier's safety profile. Your CSA points contribute to the carrier's ranking in CSA BASICs (such as Unsafe Driving or Maintenance). If you drive for a fleet, the violation may affect their insurance and safety audits; if you're an owner-operator, it impacts your own CSA score and insurability. Either way, addressing compliance matters for your future record.

FMCSR 390.403(a) governs the reporting and handling of vehicle condition information—specifically, it sets requirements for drivers to report discovered mechanical defects and for carriers to document and remediate them. The regulation ensures that safety-critical issues don't go unaddressed. A citation typically means either you failed to formally report a known defect, or your carrier did not maintain records proving the issue was investigated and repaired within required timeframes. Review your vehicle condition report procedures with your safety team.