What is the minimum hose line diameter recommended for vehicle fires?

The minimum hose line diameter recommended for vehicle fires is 1.5 inches. This size strikes a balance between providing adequate water flow to effectively combat the fire while still ensuring manageable handling for firefighters. A 1.5-inch hose can deliver sufficient pressure and volume necessary to suppress vehicle fires, which often require quick and efficient response due to the potential for fire spread and the presence of hazardous materials.

Hoses larger than 1.5 inches, such as 2 inches and 2.5 inches, may offer increased flow rates but can become cumbersome and challenging to maneuver in tight spaces, such as those commonly found around vehicles. A hose line smaller than 1.5 inches, like a 1-inch hose, typically does not provide enough water flow and pressure to effectively manage the rapid spread of flame typically associated with vehicle fires. Therefore, the choice of a 1.5-inch diameter hose is both practical and effective for this specific type of fire scenario.