Which endorsements are required in addition to a commercial driver's license for school bus drivers?

For school bus drivers, it is essential to have both the school bus endorsement and the passenger endorsement in addition to a commercial driver’s license (CDL). The school bus endorsement specifically qualifies a driver to operate a bus that is designed to carry passengers, while the passenger endorsement allows the driver to transport more than a specified number of passengers, which is critical when driving a bus that meets the requirements for carrying school children.

Having both endorsements ensures that drivers are properly trained and knowledgeable about the rules and regulations governing the transport of students, including safety protocols and liability considerations. This comprehensive training is vital to ensure the safety of children while they are being transported to and from school.

The other choices include endorsements that are either irrelevant to school bus operations, such as hazardous materials or motorcycle endorsements, which pertain to entirely different types of vehicles and cargo. Therefore, option A is the only selection that accurately reflects the necessary endorsements for operating a school bus.