FMCSR 383.93: CDL Restriction Violation — Q&A

No, a 383.93 citation does not automatically place your truck out of service. Across our 13 million inspection records, 383.93 has zero documented out-of-service placements. However, this violation carries a CSA severity weight of 6, meaning it will add points to your BASIC record. Compare this to similar driver fitness violations: operating without a valid CDL (383.23A2-LCDLN) results in an OOS rate of 98.6%, and wrong CDL class (383.23(a)(2)) has a 98.4% OOS rate. Your 383.93 violation is significantly less likely to trigger immediate out-of-service action than those related violations.

Your 383.93 violation carries a CSA severity weight of 6. This weight is multiplied by a time factor within a 30-day window—the more recent the citation within that window, the higher the multiplier. A single citation may result in 6 to 18 points depending on when it occurred relative to your inspection date. These points accumulate in your BASIC 3 (Driver Fitness) category and remain on your record for 36 months, affecting your CSA percentile score and your carrier's safety profile.

Immediate steps:

1. Review the citation details. Verify the specific restriction noted on your CDL (e.g., air brakes, automatic transmission only, certain endorsements).
2. Contact your carrier's safety or compliance department. Report the violation and provide the full citation.
3. Check your CDL. Confirm your current restrictions and ensure you understand what you are not authorized to operate.
4. Request clarification if needed. Ask the inspector or your company whether the restriction was missing from your license or you operated outside your valid restriction.
5. Consider a DataQs challenge if the facts are incorrect. If the citation misidentifies your CDL restrictions or the vehicle type, you may contest it through the FMCSA DataQs system.

383.93 is less serious than similar CDL-related violations. Our records show zero out-of-service placements for 383.93, whereas wrong CDL class (383.23(a)(2)) has a 98.4% OOS rate with 50,385 all-time citations, and operating without a valid CDL (383.23A2-LCDLN) has a 98.6% OOS rate with 47,123 citations. A 383.93 citation indicates you operated a vehicle that requires a restriction you do not have, but it does not immediately ground you or your truck. However, the 6-point CSA severity weight means it will impact your safety profile for 36 months.

Yes, you can challenge a 383.93 citation through the FMCSA's DataQs (Driver Records Quality System) if you believe the facts are incorrect. DataQs allows drivers and carriers to submit evidence—such as a certified copy of your CDL showing you do have the required restriction, or documentation proving you were not operating outside your restriction. You have 90 days from the inspection date to file a DataQs challenge. This is a documentation-based violation, so your CDL record and the vehicle's specifications are the primary evidence needed to contest it.

Your 383.93 violation is not immediately urgent for out-of-service compliance, since our records show zero OOS placements. However, it is urgent for your career and CSA score. The violation will remain on your BASIC 3 record for 36 months and contributes to your safety percentile. If the citation is accurate—you do not have the required restriction—you will need to either obtain the proper endorsement or CDL class, or avoid operating that type of vehicle. If the citation is in error, file a DataQs challenge promptly to prevent long-term CSA impact.

383.93 means you operated a commercial motor vehicle in violation of a restriction on your CDL. Restrictions are conditions that limit the type of vehicle or equipment you can legally operate—such as air brakes (if you failed the air brake test), manual transmission, passenger endorsement, hazmat endorsement, or doubles/triples. If your license requires a restriction and you drove a vehicle that does not comply with that restriction, or if you drove a vehicle that requires a restriction you do not have, you can be cited for 383.93. The violation is tied to your license, not the vehicle.

The 383.93 violation follows your driving record and appears in your CSA BASIC 3 (Driver Fitness) profile. Your CSA BASIC categories track both the driver and the carrier—when you are cited, the violation's points are attributed to both you and your employer. If you change jobs, the citation remains on your driver history and continues to count toward your safety percentile. Your new carrier will see it in a pre-hire or periodic safety audit. The 36-month retention means it will affect your record regardless of employer changes.