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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.
Before entering an intersection, make sure that:
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accelerate smoothly and change gears as necessary.
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there is sufficient space to clear it.
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there's enough room to get at least halfway across.
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That there is enough room for the rear of your vehicle to clear the stop line on your side.
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2.
You should NOT use the parking brakes if:
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the brakes are too dry.
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the brakes are cold.
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the brakes are very hot.
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All of the above.
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3.
If you swing wide to the left before turning right:
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another driver may try to pass you on the right.
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another driver may try to pass you on the left.
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you may damage the service brakes.
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None of the above.
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4.
Water
in the brakes can cause the brakes to:
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overheat.
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fade.
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be weak or apply unevenly.
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break.
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5.
The center of gravity of a trailer should be:
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at the rear of the trailer.
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as high as possible.
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as low as possible.
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at the front of the trailer.
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6.
The parking brake should be tested while the vehicle is:
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moving at highway speeds.
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moving back slowly.
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moving forward slowly.
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None of the above.
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7.
Hydroplaning:
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is more likely when tire pressure is low.
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only occurs at speeds above 55 mph.
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is more likely to occur when tire tread is in good condition.
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causes your vehicle to go faster.
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8.
If ABS is not working, you should:
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brake as you always have.
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slow down and use a lower gear.
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use the parking brake.
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put on your 4-way emergency flashers.
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9.
The most common cause of skidding is:
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driving too fast for conditions.
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spilled oil.
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surface water.
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black ice.
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10.
Why should you cover your cargo?
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To protect the cargo from weather.
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To protect people from spilled cargo.
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Because spill protection is a safety requirement in many states.
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All of the above.
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