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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 contact us by submitting a feedback form. We will respond to you directly and consider your question for inclusion in the FAQs.

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  1. What was the Operational Model Test (Op-Model Test)? Answer

    The Op-Model Test was a field test of the new Compliance, Safety, Accountability (CSA) Safety Measurement System (SMS) and comprehensive intervention process, which began in four States in February 2008 and five additional States in 2009. During the Op-Model Test, a representative sample of interstate motor carriers within the States of Colorado, Georgia, Missouri, and New Jersey were measured in the SMS and subjected to interventions, while another representative set of carriers (a control group) within the four States were subject to the existing compliance and enforcement process. Delaware, Kansas, Maryland, Minnesota, and Montana were also part of the Op-Model Test; however, all carriers in these States were measured in SMS and subjected to interventions. The test lasted 30 months and ended on June 30, 2010.

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