Final answer:
CDL endorsements are required for specific vehicle operations. Driving a passenger bus and transporting hazardous materials are the activities from the list that require an endorsement, while operating a motorcycle does not.
Step-by-step explanation:
The question pertains to endorsements on a Commercial Driver’s License (CDL), which are additional authorizations allowing a driver to operate specific types of vehicles or transport certain types of goods. Among the options provided, operating a motorcycle does not require a CDL endorsement. The correct options that require CDL endorsements are:
- Driving a passenger bus – A Passenger (P) endorsement is required for drivers who will be transporting passengers.
- Transporting hazardous materials – A Hazardous Materials (H) endorsement is required for drivers who will be transporting materials that are deemed hazardous.
Therefore, the correct response is C. both of the above, since both driving a passenger bus and transporting hazardous materials require specific endorsements on a CDL.