|Unsafe Driving||Operation of CMVs in a dangerous or careless manner.|
|Fatigued Driving (Hours-of-Service)||Operation of CMVs by drivers who are ill, fatigued, or in non-compliance with the Hours-Of-Service (HOS) regulations.|
|Driver Fitness||Operation of CMVs by drivers who are unfit to operate a CMV due to lack of training, experience, or medical qualifications.|
|Controlled Substances / Alcohol||Operation of CMVs by drivers who are impaired due to alcohol, illegal drugs, and misuse of prescription or over-the-counter medications.|
|Vehicle Maintenance||Failure to properly maintain a CMV.|
|Cargo Related||Failure to properly prevent shifting loads, spilled or dropped cargo and unsafe handling of hazardous materials on a CMV.|
|Crash Indicator||Histories or patterns of high crash involvement, including frequency and severity.|
Step 1. All relevant inspection, violation, and crash data is used to create a safety event (not just Out of Service Violations).
Step 2. Each Carrier’s violations are then classified into a BASIC.
Step 3. Every violation has been assigned a severity weight score. The severity score is multiplied by a time weight ranking, and then normalized to form a Carrier measurement score in each BASIC. (Normalizing is a method of equaling out differences in operations among Carriers.) (Time weighting of violations 6 months old and newer are assigned a weight of 3, 6-18 months old are assigned a 2, violations 18-24 months old are assigned a time weight of 1. As the violation ages, the less scoring value each contributes.)
Step 4. Based on a comparison of each Carrier’s BASIC measured score to other Carriers similar in operations, a final rank and percentile are assigned. This rank and percentile is what is used by Law Enforcement to determine its intervention process.
Step 5*. Step 5 is a proposed additional step that has yet to be approved. Step 5 will take the scoring of each basic and translate it into an overall Carrier Rating of one of the following: Continue to Operate, Marginal or Unfit.
* Without having the “normalizing” algorithm or the data on similar carriers used in steps 3 and 4, it is impossible to duplicate the CSA scoring methodology. If you would like to view the full document of the Safety Measurement System Methodology, click here.