CSA is the Federal Motor Carrier Safety Administration's (FMCSA) safety compliance and enforcement program, which holds motor carriers and drivers accountable for their safety on our Nation’s roads. CSA affects carriers subject to the Federal Motor Carrier Safety Regulations, carriers transporting passengers or cargo in interstate commerce, and Hazardous Materials carriers operating in intrastate commerce. CSA may also impact carriers whose State requires that they obtain a U.S. DOT Number. CSA consists of three key components:

1. The Safety Measurement System (SMS) is FMCSA’s system for identifying unsafe carriers that should receive interventions. The SMS allows FMCSA, law enforcement, and motor carriers to see a comprehensive profile of safety issues. The SMS automatically identifies carriers that pose the greatest safety risk so that resources can be prioritized. Review the SMS Methodology to learn more about the SMS.
2. The safety interventions include tools to more efficiently and effectively bring carriers into compliance.
3. FMCSA uses the current safety rating process outlined in 49 CFR Part 385, which determines a carrier’s safety fitness through an Onsite Investigation. Safety rating information is available on the SAFER Website.