Which of the following is a requirement for obtaining a Class B CDL?

To obtain a Class B Commercial Driver's License (CDL), one of the essential requirements is passing a knowledge test. This test evaluates a prospective driver's understanding of the rules and regulations specific to operating a commercial vehicle, including safety procedures, vehicle operation, and applicable laws. Successfully passing this knowledge test ensures that the individual has the necessary theoretical knowledge to operate a Class B vehicle safely.

While other requirements may also exist, such as having a valid driver's license and possibly undergoing a medical exam to ensure fitness to drive, successfully completing the knowledge test is a critical and foundational step in the CDL acquisition process.