Direct answers about 387.31A enforcement, out-of-service risk, and what to do after being cited. Based on 13 million inspection records.
Ranks #1,685 of 3,146 FMCSR codes by citation frequency • OOS rate of 0.0% is below the FMCSR-wide average of 33.3%.
Direct answers grounded in TruckCodex inspection data
No. Across our 13 million inspection records, 387.31A has never resulted in an out-of-service order. The all-time OOS rate for this code is 0.0%—34 citations issued, zero trucks placed out of service.
For context, the average FMCSR code carries a 31.4% OOS rate. This violation is administrative in nature and is not subject to out-of-service enforcement, meaning you can continue operating after citation.
387.31A is relatively low-enforcement. It ranks #1746 out of 3,036 FMCSR codes by citation volume, with only 34 all-time citations in our database.
Other administrative codes in the same category—like 390.21TB2-DOT (74,663 citations) and 390.21T(b) (61,097 citations)—see far higher citation counts. All of these peer codes also carry 0.0% OOS rates, meaning they are enforcement markers rather than immediate safety threats.
Take these steps immediately:
Possibly. The DataQs (Crash and Inspection Query System) allows drivers and carriers to challenge roadside inspection findings that they believe are inaccurate or unsupported.
For 387.31A (an administrative/documentation code), you can contest if:
You have 90 days from the citation date to file. Work with your carrier or a compliance consultant to prepare your challenge.
In the last 180 days, our inspection records show 387.31A citations are sparse and spread nationally. The highest concentration:
No single state dominates enforcement for this code, suggesting it is cited inconsistently across regions rather than as part of a coordinated national focus.
Citation volume is low and volatile. Across the last 12 months in our database, enforcement peaked in March 2026 with 5 citations, then dropped sharply. Recent months (January–February 2026) show only 1–2 citations per month.
With just 8 citations in the last 90 days (compared to 22 in the last 12 months), this code is not a high-priority enforcement target. Sporadic spikes suggest it is cited during focused compliance reviews rather than as part of routine roadside inspections.
When 387.31A appears on an inspection, it often travels with other documentation and operational violations. In the last 90 days, co-occurring codes include:
This pattern suggests 387.31A frequently appears during inspections that flag broader compliance gaps. If cited, review your entire inspection report for related violations to avoid repeat citations.
Both. Under FMCSA's CSA (Compliance, Safety, Accountability) system, roadside inspection violations are recorded in two places:
This means the violation appears in your personal driving history and affects your employer's safety rating. If you change carriers, the citation moves with you. Your current employer will also see it in carrier safety reports and may factor it into your standing with the company.
Where 387.31A is most commonly cited (last 180 days)
Other violations commonly found on the same inspection (last 90 days)
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.