• Water can be used on wood, paper, or cloth, but  don't use water on an electrical fire (can cause  shock) or a gasoline fire (it will spread the  flames). • A burning tire must be cooled. Lots of water may  be required.  • If you're not sure what to use, especially on a  hazardous materials fire, wait for firefighters.  • Position yourself upwind. Let the wind carry the  extinguisher to the fire.  • Continue until whatever was burning has been  cooled. Absence of smoke or flame does not  mean the fire cannot restart.  1. What are some things to do at an accident  scene to prevent another accident?  2.  Name two causes of tire fires.  3. What kinds of fires is a B:C extinguisher not  good for?  4. When using your extinguisher, should you get  as close as possible to the fire?  5.  Name some causes of vehicle fires.  These questions may be on the test. If you can't  answer them all, re-read subsections 2.20 and 2.21.  2005 Model Commercial Driver’s License Manual Subsections 2.20 and 2.21  Test Your Knowledge  Figure 2.20  Figure 2.21  Class of Fire/Type of Extinguisher  Class of Fire  Fire Extinguisher Type B or C  Regular Dry Chemical  A, B, C, or D  Multi Purpose Dry Chemical  D  Purple K Dry Chemical  B or C  KCL Dry Chemical  D Dry Powder Special Compound  B or C  Carbon Dioxide (Dry)  Halogenated Agent (Gas)  A Water A  Water With Anti-Freeze  A or B  Water, Loaded Steam Style  B, On Some A  Foam  Class/Type of Fires  Class Type A  Wood, Paper, Ordinary Combustibles  Extinguish by Cooling and Quenching  Using Water or Dry Chemicals  B  Gasoline, Oil, Grease, Other Greasy  Liquids  Extinguish by Smothering, Cooling or  Heat Shielding using carbon Dioxide or  Dry Chemicals C  Electrical Equipment Fires  Extinguish with Nonconducting Agents  such as Carbon Dioxide or Dry  Chemicals. DO NOT USE WATER.  D  Fires in Combustible Metals  Extinguish by Using Specialized  Extinguishing Powders  Page 2-37 Section 2 – Driving Safely Section 2 – Driving Safely Page 2-37 