What does the alphabet soup following 392.2 on a roadside inspection report mean?
One question that comes up when reviewing roadside inspection reports is, “What is the meaning of the letters that follow a violation of 392.2 on a roadside inspection report?”
‘State and local laws’
A violation of 392.2 is a violation of a local or state law, regulation, or ordinance. These must be obeyed due to 392.2, which reads, “Every commercial motor vehicle must be operated in accordance with the laws, ordinances, and regulations of the jurisdiction in which it is being operated.”
The confusion is that there are no paragraphs in 392.2, so there technically should be no letters following that section. However, to inform the driver, carrier, and the Federal Motor Carrier Safety Administration (FMCSA) what particular state or local law or regulation was involved, FMCSA has developed a system of suffix codes. The letters following “392.2” – the “suffix” — show which state or local law or regulation was involved.
When one of these codes is used, the officer should include a description of the specific violation in the “violation details” area on the actual inspection report. FYI: Summary roadside inspection reports (such as the ones visible in CSA’s SMS) do not show these details.
For more information, see our ezExplanation on Roadside Inspections. |
Not all 392.2 violations are used in CSA
Not all of these state and local law or regulation violations are used by the FMCSA for scoring purposes. The Compliance, Safety, Accountability (CSA) Safety Measurement System (SMS) does not use the 392.2 violations that cannot be tied to crash causation. Here are a couple of examples: 392.2UCR Failure to pay UCR fee and 392.2W Size and weight are not used.
Most common 392.2 violations
Below are the top 10392.2violations written during 2021. All of these violations are safety-related, and therefore used in the CSA SMS for scoring. The BASIC within the SMS the violation is scored in is shown following the violation description.
- 392.2SLLS2 Speeding 6-10 miles per hour over the speed limit (Unsafe Driving)
- 392.2C Failure to obey traffic control device (Unsafe Driving)
- 392.2LV Lane Restriction violation (Unsafe Driving)
- 392.2SLLS3 Speeding 11-14 miles per hour over the speed limit (Unsafe Driving)
- 392.2WC Wheel (Mud) flaps missing or defective (Vehicle Maintenance)
- 392.2SLLS4 Speeding 15 or more miles per hour over the speed limit (Unsafe Driving)
- 392.2ML Failure to maintain lane (Unsafe Driving)
- 392.2SLLSWZ Speeding work/construction zone (Unsafe Driving)
- 392.2PK Unlawfully parking and/or leaving vehicle in the roadway (Unsafe Driving)
- 392.2FC Following too close (Unsafe Driving)
Key to remember
In general, FMCSA does not write traffic codes. They rely on local and state agencies to do that. When state or local traffic codes are violated, it appears on a roadside inspection report as a violation of 392.2, with a suffix indicating which traffic code was involved.