Fires: New Jersey CDL practice questions
Part of the General Knowledge test. We have 7 checked questions on this topic. Here are the key rules, and two to try.
Key facts
| Part of | the General Knowledge test (80% to pass) | NJ MVC CDL FAQ |
|---|---|---|
| Manual section | §2.21 Fires | NJ CDL Manual p. 2-39 |
| Questions in CDL Mile's bank | 7 | CDL Mile, checked against NJ CDL Manual |
Key rules
- § 2.21.3p. 2-39
Shut the engine off as soon as you can and keep the hood closed if possible. Direct the foam in through the louvers, the radiator or from under the vehicle.
Fire Fighting
- § 2.21.3p. 2-39
Water works on burning wood, paper or cloth, but on gasoline it spreads the flames, and on an electrical fire it can cause a shock. A B:C extinguisher is made for burning liquids and electrical fires.
Fire Fighting
Try two questions
General Knowledge · Fires
You notice smoke coming from under your hood, and a service station is just up the road. Where should you stop?
Tap an answer to see the explanation and the manual page.
General Knowledge · Fires
You find a fire in the cargo of your van trailer. Why does the manual say to keep the trailer doors shut?
Tap an answer to see the explanation and the manual page.
More General Knowledge topics
Sources
New Jersey Commercial Driver License Manual, version March 2025, New Jersey Motor Vehicle Commission. Page references are to its printed page numbers. CDL Mile is independent and not affiliated with the NJ MVC.
Updated for the March 2025 New Jersey CDL manual. Last checked November 5, 2026.
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