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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 you are being tailgated, you should:
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open up room in front of you.
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increase your speed very gradually.
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make quick changes.
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turn on your taillights.
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2.
When backing, you should:
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back and turn toward the right side whenever possible.
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only use mirror on the driver's side.
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back quickly.
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use the mirrors on both sides.
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3.
Loose engine belts will:
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improve fuel efficiency.
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will make it easier to stop quickly.
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not turn the water pump and/or fan properly, which will result in overheating.
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should not be tightened.
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4.
The steering wheel should:
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be held firmly with the left hand.
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be held firmly with both hands.
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be held with one hand at a time.
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be held firmly with the right hand.
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5.
The emergency equipment must include:
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Charged and rated fire extinguisher.
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Electrical fuses.
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3 red reflective triangles.
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All of the above.
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6.
When you are driving on a slippery road, you should NOT:
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adjust turning and braking to road conditions.
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keep a longer following distance.
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use the engine brake or speed retarder.
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take curves at slower speeds.
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7.
Most heavy-duty vehicles use:
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single air brake systems.
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triple air brake systems.
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dual air brake systems.
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pump-the-brake systems.
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8.
Hanging meat in a refrigerated truck:
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will not affect safe driving ability.
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creates a low center of gravity.
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can be a very unstable load.
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should never be transported.
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9.
_________ can make vehicle handling unsafe.
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Dry roads
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Poor ventilation
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ABS
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Poor weight balance
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10.
When passing a parked vehicle, which of the following is the only thing you do NOT need to watch out for?
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Driver's door opening
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Passenger door opening
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Lights coming on
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Wheels starting to turn
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