Commercial motor vehicle traffic violations are not just tickets — they carry consequences that extend far beyond a fine. For commercial drivers, a serious traffic violation can mean CDL disqualification. For carriers, driver violations feed directly into CSA scores that affect insurance rates, shipper relationships, and regulatory scrutiny. This guide covers the most common and most serious CMV traffic violations and what they mean for your career and your business.
The Two Categories: Serious vs. Non-Serious Violations
FMCSA regulations distinguish between serious traffic violations and general traffic violations. Serious traffic violations trigger CDL disqualification when accumulated. Under 49 CFR § 383.51, serious traffic violations include:
- Speeding 15 mph or more above the posted limit
- Reckless driving
- Improper or erratic lane changes
- Following too closely (tailgating)
- Violating traffic control laws in connection with a fatal accident
- Operating a CMV without a CDL in possession
- Operating a CMV without proper CDL class or endorsements
CDL Disqualification Rules
- Two serious traffic violations in a commercial vehicle within 3 years: 60-day CDL disqualification
- Three serious traffic violations in a CMV within 3 years: 120-day CDL disqualification
- DUI/DWI in a CMV: Minimum 1-year disqualification (3 years if carrying hazmat)
- Second DUI/DWI ever: Lifetime CDL disqualification (may apply for reinstatement after 10 years in some states)
- Leaving the scene of an accident (hit and run): Minimum 1-year disqualification
- Felony using a CMV: Minimum 1-year disqualification; lifetime for drug-related felonies
Speed Limits for Commercial Vehicles
Many states impose lower speed limits for trucks than for passenger vehicles, particularly on grades, curves, and in construction zones. Drivers must know the applicable CMV speed limits for each state they operate in — GPS navigation does not always display truck-specific limits. State DOT websites publish current CMV speed limit schedules.
How Violations Affect CSA Scores
Every roadside inspection violation — including moving traffic violations observed by enforcement officers — feeds into the carrier’s CSA score under the relevant BASIC (most moving violations go into the Unsafe Driving BASIC). Violations are weighted by severity and recency. A serious traffic violation carries a severity weight of 7 on a scale of 1–10.
About the Author
James Whitmore is a commercial transportation consultant with 15+ years of experience. → Back to the Trucking Legal & Liability Guide
Sources
- 49 CFR § 383.51 — Disqualification of Drivers
- FMCSA CSA Safety Measurement System
- Federal Motor Carrier Safety Administration
Disclaimer: CDL disqualification rules vary by state and are subject to change. Consult a transportation attorney or your state DMV for current requirements.