Texas CDL General Knowledge Latest Update 2025-2026 100 Questions and 100% Verified Correct Answers Guaranteed A+
A car cuts in front of you creating a hazard. What should you not do? - CORRECT
ANSWER: Honk and stay close behind the car
A full stop at a railroad crossing is required when? - CORRECT ANSWER: The nature of the cargo makes a stop mandatory under state or federal regulations.
According to the cdl drivers manual, why should you limit the use of your horn? -
CORRECT ANSWER: It can startle other drivers.
After starting the engine - CORRECT ANSWER: The coolant temperature gauge should begin a gradual rise to normal.
Backing a commercial vehicle... - CORRECT ANSWER: Is always dangerous
Containerized loads - CORRECT ANSWER: Are generally used when freight is carried part way by rail, ship, or air.
Controlled breaking is used to keep a vehicle in a straight line when breaking. - CORRECT ANSWER: is used to keep a vehicle in a straight line when breaking.
Convex (curved or spot) mirrors... - CORRECT ANSWER: Show a wider are than flat
mirrors show.
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During a vehicle inspection checking the ___ will not help prevent a fire. - CORRECT
ANSWER: Batter fluid level
Extra care is needed to keep your vehicle centered in your lane because commercial
vehicles... - CORRECT ANSWER: Are often wider than other vehicles.
For a first offense of driving a commercial vehicle under the influence of school or drugs
you will loose your CDL for at least... - CORRECT ANSWER: 1 year
Freeway exits can be dangerous for heavy vehicles. At what speed should you enter the
exit? - CORRECT ANSWER: At least 5 miles below the posted speed limit.
How does vehicle weight effect stopping? - CORRECT ANSWER: Empty trucks take
longer to stop than loaded ones, but this is not always the case for buses.
How far should a driver look ahead of the vehicle while driving. - CORRECT ANSWER: 12-15 seconds or 1/4 of a mile
How often should you check your mirrors for a lane change? - CORRECT ANSWER:
Before you change lanes, after you have signaled, after you start the lane change, and after you complete the lane change.
If you are being tail gated you should? - CORRECT ANSWER: Increase your following distance
If you are not sure what extinguisher to use on hazardous material fire you should? -
CORRECT ANSWER: You should wait for qualified fire fighters
If you are not sure what to use to put out a hazardous material fire you should -
CORRECT ANSWER: Wait for qualified fire fighters
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