What must be done on a school bus when transporting non-students?

Answer: D — All of the above

When transporting non-students, it is essential for a school bus to adhere to specific safety regulations and operational protocols. Covering the words "School Bus" is important because this identifies the vehicle as a school bus and denotes its primary purpose. When the vehicle is being used for non-student transportation, marking it as a standard bus helps prevent confusion and promotes awareness among other road users, ensuring safety. Additionally, the crossover lights must be covered as they signal to other drivers that schoolchildren might be boarding or exiting the bus. When non-students are on board, these lights can create misunderstandings about the vehicle's purpose. Transforming the bus into a School Pupil Activity Bus (SPAB) becomes necessary for safe transport of non-students under specific conditions. A SPAB is designed to transport students, making it essential to follow the regulations that apply to passenger transport, including appropriate signage and safety measures. Therefore, both covering the "School Bus" signage and the crossover lights are crucial when transporting non-students to maintain clarity and safety on the roads.