In fiscal year 2020, the top three truck driver violations found during roadside inspections were all driver-related behaviors. This included speeding 6 to 10 miles per hour over the posted speed limit at the top of the list. Failure to obey a traffic control device and failing to use a seat belt while operating a commercial motor vehicle were the other two.
The Federal Motor Carrier Safety Administration (FMCSA) utilizes the Safety Measurement System (SMS) to monitor trucking fleets’ safety...
https://www.freightwaves.com/news/gaps-in-driver-monitoring-are-putting-fleets-at-risk