Frequently Asked Questions
The Frequently Asked Questions (FAQs) are questions and answers about Compliance,
Safety, Accountability (CSA) that the Federal Motor Carrier Safety Administration
(FMCSA) compiled to assist the public. As questions come in through the website,
FMCSA adds them to the database along with their answers. If you do not see your
question or topic addressed, please
by submitting a feedback form. We will respond to you directly and consider your
question for inclusion in the FAQs.
The FAQ area has recently been enhanced. Users can now search FAQs by stakeholder
group, topics (displayed on the left side of the page), or by entering a keyword
below. Choosing “Show All” will display the entire collection of FAQs.
How is the Safety Measurement System (SMS) used?
The Federal Motor Carrier Safety Administration uses the SMS to:
- Identify motor carriers for interventions, such as warning letters, investigations,
or roadside inspections.
- Determine the specific safety problems of the carrier to focus on during an intervention.
- Monitor motor carrier noncompliance issues over time.