GENERAL KNOWLEDGE CDL TEST TEXAS - PRACTICE TEST

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The CDL general knowledge test is required to be taken by all CDL applicants. The Texas CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Texas CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual TX general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. If the engine catches fire, you should:
open the hood as soon as you can.
turn off the engine as soon as you can.
pull into a service station and notify the emergency services.
avoid shooting foam from the vehicle's underside.
2. If you are traveling at 55 mph in a 30 foot vehicle, how many seconds of following distance should you have?
2 seconds
5 seconds
3 seconds
4 seconds
3. Drivers should watch out for black ice when the temperature is ______ freezing and the road looks ______.
below; wet
above; wet
below; dry
above; dry
4. Drivers should adjust their mirrors:
while driving.
after driving.
before driving.
None of the above.
5. If an aggressive driver confronts you, you should NOT:
try to let them pass.
try to get out of their way.
make eye contact.
ignore gestures.
6. Brake lag is:
the amount of air pressure required to stop the vehicle.
the time required for the air brakes to work after the brake pedal is pushed.
the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
the distance your vehicle will travel, in ideal conditions, while you are braking.
7. Empty trucks:
require greater stopping distances.
have less traction.
are higher than loaded trucks.
All of the above.
8. When you get in the vehicle and start the engine, you should:
listen for unusual noises after starting the engine.
make sure the parking brake is on before starting the engine.
put the gearshift in neutral (or park if automatic) before starting the engine.
All of the above.
9. Class A:B:C fire extinguishers are designed to work on:
burning wood, paper, and cloth.
burning liquids.
electrical fires.
All of the above.
10. Which of the following is not a braking system on a truck?
Emergency brake
Steering brake
Service brake
Parking brake
 
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TX CDL Practice Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
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