What safety gear must a school bus driver wear while the bus is in motion?

The requirement for a school bus driver to wear a seatbelt while the bus is in motion is rooted in safety regulations that prioritize the protection of both the driver and the passengers. In the event of a sudden stop or collision, a seatbelt serves as a critical restraint, reducing the risk of injury by keeping the driver securely in their seat and maintaining control over the vehicle. This practice aligns with broader safety measures in motor vehicle operation, emphasizing that all vehicle occupants, including drivers, should utilize seatbelts at all times in order to enhance safety on the road.

The other options, while they have their own safety applications in different contexts, do not specifically relate to the mandatory safety gear required for school bus operation. A hard hat is typically used in construction environments, reflective vests are important for visibility in certain job roles or situations but are not a requirement for bus drivers, and gloves might be used in specific maintenance or mechanical tasks but are not necessary while driving. Thus, the seatbelt is the most relevant and essential piece of safety gear for a bus driver while the vehicle is operational.