If you operate a commercial vehicle in the United States, acquiring a Department of Transportation DOT Number is a crucial step for legal compliance. The Federal Motor Carrier Safety Administration (FMCSA) requires this unique identifier for companies that transport cargo or passengers interstate. But, do you clearly know what is a DOT Number? A DOT Number is an identifier that is assigned by the Federal Motor Carrier Safety Administration (FMCSA). It’s a part of the U.S. Department of Transportation (USDOT). The FMCSA uses this number to track a company’s safety information, compliance, and audits. Generally, the FMCSA’s primary mission is to enhance the safety of commercial vehicles and trucking companies to minimize crashes, injuries, and fatalities on highways. **Overview of the Federal Motor Carrier Safety Administration (FMCSA)** Established in the year January 1, 2000. Responsible for enforcing safety regulations for commercial motor vehicles Develops standards for truck and bus companies as well as commercial drivers Conducts research and implement educational campaigns for road safety. Whether you’re a fleet owner, independent operator, or managing a business with commercial vehicles, securing your DOT Number is a foundational step. With expertise in transportation legislation, we’ll unpack the process for you. Here’s what you can expect to learn about ahead.