What refinements were made to the SMS Methodology after the Operational Model Test in August 2010?
The Safety Measurement System (SMS) uses seven Behavior Analysis and Safety Improvement Categories (BASICs) to assess motor carriers’ safety. The BASICs are: Unsafe Driving, Fatigued Driving (Hours-of-Service), Driver Fitness, Controlled Substances/Alcohol, Vehicle Maintenance, Cargo-Related, and Crash Indicator.
