For a non-wheelchair bus, how many fire extinguishers must there be if they each have a rating of no less than 4BC?

The requirement for fire extinguishers in a non-wheelchair bus is based on safety regulations designed to ensure that the vehicle is adequately equipped to handle potential fire emergencies. A non-wheelchair bus must have at least two fire extinguishers with a minimum rating of 4BC.

Having two fire extinguishers enhances safety, as it provides a backup in case one is not functional or is inaccessible in an emergency. The 4BC rating indicates that the extinguisher is suitable for flammable liquid fires and electrical fires, both of which are relevant risks in a school bus environment. The presence of two extinguishers helps ensure that bus personnel are equipped to respond effectively to such emergencies, protecting the children on board and the driver.

In contrast, having only one extinguisher could be insufficient in certain scenarios, where immediate access to a second unit could make a critical difference in evacuating the bus safely or combating a fire in its early stages.