Which types of commercial vehicles are required to carry fire extinguishers?

Vehicles transporting explosives are required to carry fire extinguishers due to the inherent risks associated with such cargo. Explosives pose a significant fire hazard, and having a fire extinguisher on board is a critical safety measure to quickly address any fire-related incidents that could occur during transport. This requirement ensures that drivers and passengers have the necessary equipment to manage an emergency situation, thereby enhancing safety on the road.

In the context of the other options, while limited passenger vehicles, public passenger vehicles, and school buses may have their own safety regulations, they do not carry the same specific requirement for fire extinguishers as vehicles transporting explosives do. The transportation of explosives is governed by stricter regulations due to the potential dangers involved.