One of the roles of the Federal Motor Carrier Safety Administration (FMCSA) is to enforce safety rules among the many commercial truck and bus companies that operate in the United States. When a company is ordered to stop business until a safety problem is fixed, many companies set the problem right as soon as possible Some, however, choose an easier but more dangerous route and simply dissolve, re-forming under a new Department of Transportation (DOT) number and continuing business as usual.