In a CSA BASIC category, a score of 0 indicates that you have either never had a roadside inspection or that the ones you have had have yielded no violations. Try to keep each BASIC score as near to 0 as you can, if not exactly at this ideal state.
We have consistently maintained that, in terms of DOT compliance, no inspection is better than any inspection. Your drivers are typically not providing law enforcement with a reason to inspect your commercial cars if they aren’t being inspected.
The CSA program’s BASIC categories, which include Hazardous Materials, Driver Fitness, Hours of Service, Crash Indicator, Unsafe Driving, Controlled Substances & Alcohol, and Vehicle Maintenance, have a percentile range of 0 to 100%.
In the unlikely attempt by the FMCSA to group carriers based on a comparable number of inspections, if you are a motor carrier with a 100% percentile score in a BASIC area, all other trucking companies in your “Safety Event Group” have a higher CSA score than you do in that CSA category.