The trucking industry is one of the most important sectors of the American economy. Thousands of trucks drive millions of miles hauling billions of tons of goods every year. This industry is also among the most heavily regulated, with thousands of different trucking laws on the books. The Federal Motor Carrier Safety Administration (FMCSA) enforces the nation’s trucking laws. The agency oversees how drivers and trucking companies operate, including their safety precautions and hours of service for drivers.