What are the two parts of the CDL knowledge test?

The correct choice highlights the structure of the CDL knowledge test, which consists of general knowledge and endorsement tests. The general knowledge test assesses a driver's understanding of essential concepts and safe driving practices pertinent to operating commercial vehicles. This includes understanding vehicle operation, regulations, and safety requirements.

Endorsement tests are specific evaluations that cover additional skills and knowledge required for particular types of vehicles or endorsements, such as passenger transport, hazardous materials, or double/triple trailers. Successfully passing both the general knowledge and the relevant endorsement tests is crucial for obtaining a Commercial Driver's License, as it ensures that the driver is well-versed in the specific regulations and responsibilities tied to various driving scenarios and vehicle types.

In contrast, other choices do not accurately represent the structure of the CDL tests. For example, a written test and practical test or knowledge and skills evaluations might imply a broader or different testing structure not specific to CDL requirements, while commercial and non-commercial tests don't encapsulate the specifics of general knowledge and endorsements needed for the CDL.