Fires: Texas 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)	DL-7C p. iv
Handbook section	§2.21 Fires	DL-7C p. 2-39
Questions in CDL Mile's bank	7	CDL Mile, checked against DL-7C

§ 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

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 handbook page.

General Knowledge · Fires

You find a fire in the cargo of your van trailer. Why does the handbook say to keep the trailer doors shut?

Tap an answer to see the explanation and the handbook page.

Texas Commercial Motor Vehicle Drivers Handbook (DL-7C), revised March 2026, Texas Department of Public Safety. Page references are to its printed page numbers. CDL Mile is independent and not affiliated with Texas DPS.

Updated for the March 2026 Texas CDL handbook (DL-7C). Last checked November 4, 2026.

A free 15-question check, then practice that targets your weak spots. $49 for 60 days if it helps.