What is the foam proportioning percentage recommended for cars and trucks?

The recommended foam proportioning percentage for firefighting efforts involving cars and trucks is between 0.50% to 1.0%. This range is effective for suppressing flammable liquid fires that may be present in vehicle accidents or fires.

Foam is an important tool in firefighting because it covers and smothers the flames, preventing oxygen from reaching the fire and effectively isolating it from the fuel source. The 0.50% to 1.0% range is considered optimal for breaking down the combustion process in hydrocarbons typically found in vehicles, such as gasoline and diesel fuel, while still allowing for efficient application and dispersal of foam.

Using foam at this concentration ensures effective coverage and helps in cooling the surrounding area, which is essential for preventing re-ignition and controlling the spread of fire in vehicle-related incidents. Higher concentrations beyond this recommended range might not provide additional benefits and could lead to unnecessary residue and complications during cleanup.