The job duties of a Class B CDL owner operator involve operating a truck to perform transportation tasks for clients or an employer. A driver with a Class B commercial driver’s license can drive a straight truck, a box truck, or a dump truck with a small trailer. In addition to transporting cargo, you often supervise loading and unloading and plan your route depending on schedule requirements. As an owner operator, your responsibilities include maintaining your vehicle and obtaining fuel and necessary maintenance services. Class B CDL owner-operators can work on a contract basis with one or more companies.