What 383.23(c) means in plain language
383.23(c) addresses requirements related to a driver's qualification to operate a commercial motor vehicle. This regulation ensures that anyone behind the wheel of a CMV has met the federal standards necessary to safely transport cargo or passengers on public roads. The code focuses on verifying that drivers possess the proper credentials and meet the baseline fitness standards FMCSA has established.
When an inspector cites you for 383.23(c), they're documenting that something in your licensing, certification, or qualification status did not meet the standard at the moment of inspection. This could involve documentation, status verification, or a gap in the required paperwork or qualifications.
What our enforcement data actually shows
Our inspection records show that 383.23(c) carries a 100.0% out-of-service rate across all citations in our database—significantly higher than the all-FMCSR average OOS rate of 31.4%. However, the enforcement volume for this code is extremely low: we have recorded only 4 all-time citations, with 0 citations in the last 12 months and 0 in the last 90 days.
Despite the small sample size, the data indicates that when this violation is cited, it consistently results in an out-of-service order. This reflects how seriously roadside inspectors treat driver qualification and licensing violations. The rarity of citations in recent months suggests either strong compliance in this area or that inspectors are focusing enforcement resources on other driver fitness violations.
383.23(c) ranks #2480 out of 3,036 FMCSR codes by citation volume, placing it in the lower tier of enforcement activity. This doesn't mean it's less serious—quite the opposite. The 100% OOS rate underscores that whenever it is enforced, immediate removal from service is the outcome.
Who gets cited most
Across our 13 million inspection records, all-time citations for 383.23(c) are concentrated among a small number of carriers. Our data shows fleets such as Edgewood Trucking LLC with 1 citation, Collin C Craft with 1 citation, RDI Construction Inc with 1 citation, and Swift OK Trucking LLC with 1 citation. Because the overall volume is so low, no single state or carrier stands out as a hotspot. The vehicle makes cited have included GMC and unknown makes, but again, the sample size is too small to draw operational patterns.
The scarcity of citations means this violation is not a widespread issue across the carrier landscape, but when it does occur, enforcement is swift and absolute.
How severe is this compared to similar codes
Within the Driver Fitness category, 383.23(c) sits among some of the most frequently cited violations in the federal motor carrier safety program. For comparison:
- 383.23(a)(2) (CDL - wrong class) has accumulated 50,385 citations with a 98.4% OOS rate.
- 391.41APC (Medical certificate) shows 49,539 citations with a 97.1% OOS rate.
- 383.23A2-LCDLN (Operating a CMV without a valid CDL) records 47,123 citations with a 98.6% OOS rate.
While these peer codes occur far more frequently in roadside inspections, their OOS rates are nearly identical to 383.23(c)'s 100% rate. This pattern confirms that driver qualification and licensing violations across the board are treated as serious immediate safety threats and result in out-of-service orders almost universally.
Other codes in the category, such as 391.41(a) (Physical qualification - general) with 42,270 citations, show a much lower 16.2% OOS rate, suggesting they involve violations that inspectors sometimes allow drivers to correct without immediate removal from service. By contrast, 383.23(c) appears to address a category of non-compliance that FMCSA views as non-negotiable at the roadside.
How to avoid it
Since 383.23(c) relates to your core driver qualification and licensing status, prevention is straightforward but critical:
-
Verify your CDL status before every shift. Check your state's driver licensing portal or contact your state DOL to confirm your license is valid, current, and not suspended or revoked. Do not assume your license status from memory.
-
Keep all required certifications and medical documentation current and accessible. If you operate in hazmat, tanker, or other specialty categories, ensure your endorsements are renewed on schedule. Carry your medical certificate (MCSA-5875) with you or confirm it's on file with your state licensing agency.
-
Confirm your USDOT number and carrier authority alignment. If you drive for a carrier, verify that your name and information match the carrier's operating authority records with FMCSA. Mismatches can trigger qualification questions at inspection.
-
Review your Motor Vehicle Record (MVR) annually. Request a copy of your own MVR from your state to identify any unresolved status issues, such as unreported convictions or license suspensions, before an inspector discovers them.
-
When hired by a new carrier, complete their application and qualification process fully. Provide all requested documents—birth certificate, Social Security card, medical exam results, previous employment history. Incomplete files create qualification gaps that inspectors will cite.
-
If your license has ever been suspended, revoked, or subject to any administrative action, resolve it immediately. Do not operate a CMV until the issue is fully cleared. Roadside inspectors check status in real time via CDLIS (Commercial Driver License Information System).
These preventive steps address the root causes behind 383.23(c) citations: incomplete documentation, lapsed certifications, and status mismatches that create doubt about your legal right to operate. Because the OOS rate is 100%, there is no room for negotiation or correction at roadside. Compliance must be absolute before you turn the key.