How large must a fire extinguisher be, at a minimum, for a school bus?

The minimum size for a fire extinguisher on a school bus is 2 quarts. This requirement ensures that the extinguisher is adequately equipped to handle potential fire emergencies that may occur on the bus. A larger fire extinguisher allows for a more effective response to fires, which is critical in a school environment where student safety is the top priority.

Using an extinguisher that is too small (like 1 quart) may not provide sufficient fire-fighting capacity, especially in the event of a rapidly spreading fire. Fire safety regulations and guidelines are designed to mitigate risks and protect both the passengers and the vehicle, which is why having a larger extinguisher is mandated.