What type of fire extinguisher is required for buses and taxis that transport passengers?

Buses and taxis that transport passengers are required to have a chemical type fire extinguisher of at least one quart capacity to effectively handle potential fire hazards that could arise in transit. This requirement is based on the need for a fire extinguisher that can manage various types of fires, particularly those caused by combustible liquids, electrical equipment, or other flammable materials commonly found in vehicles. A chemical fire extinguisher contains agents like foam or dry chemicals, which are capable of smothering flames and preventing re-ignition, making them suitable for the diverse fire risks that could occur in passenger vehicles.

A powder type fire extinguisher, while effective in many scenarios, may not be specified for passenger transport, as the criteria established for safety measures require a chemical type that ensures comprehensive protection. Water-based extinguishers are typically not recommended for fires involving flammable liquids or electrical fires, which are potential risks in vehicles. An aerosol type fire extinguisher is generally not suitable for the volume and potential intensity of fires that can happen in a bus or taxi, as they may not be designed for the specific fire risks associated with such transport. This makes the chemical type with a minimum capacity of one quart the most appropriate and required choice.