Truck drivers often ask me how to report motor carriers that require them to drive over hours, with unsafe equipment, and in violation of one or more of the Federal Motor Carrier Safety Regulations. I had just such a call yesterday, regarding a Florida company, from a driver.
The FMCSA understands how tricky this is for a driver and allows anonymous reporting of safety violations. You can go to the website and review the system by clicking HERE. The phone number, toll free, to report an unsafe trucking company is found here: 1-888-DOT-SAFT (368-7238)
2017 Update: There is now a Department of Transportation National Consumer Complaint Database (NCCDB) for complaints about unsafe truck and bus companies. The complaints can be made by by consumers, drivers and employees, and industry members (Shippers, Brokers, Freight Forwarders, etc…). The online anonymous complaint forms that can be found HERE