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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.
To stay alert and safe while driving, you should:
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drive at night, if possible.
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always drive alone, if possible.
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drink coffee if you get drowsy.
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avoid any drug that hides fatigue.
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2.
When using double clutching to shift gears, if you are having difficulty putting the vehicle into the next gear you should:
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force the lever until you put the vehicle into the next gear.
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reduce the engine speed to drop back to the previous gear.
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return to neutral, release the clutch, increase the engine speed to match the road speed, and try again.
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prevent the transmission from shifting up beyond the selected gear.
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3.
In order to apply for a Commercial Driver License, the driver must meet the following requirements:
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not addicted to drugs
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no epilepsy
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be 21 years of age or older
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All of the above.
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4.
It is safer to drive over (rather than to avoid) which of the following?
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Cardboard boxes
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Plastic containers
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Paper and cloth sacks
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None of the above.
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5.
In which of the following situations should you check your mirrors more often?
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When driving on a single lane road.
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When changing lanes or merging.
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When driving on a narrow road.
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While stopped at an intersection.
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6.
Containerized loads:
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should exceed gross weight and axle weight limits.
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must be inspected before and after the trip.
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are generally used for freight carried part way by rail or ship.
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All of the above.
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7.
Dry bulk tanks require special care because:
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they have a low center of gravity.
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are heavier than other CMVs.
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take up more space than other CMVs.
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they have a high center of gravity.
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8.
To make sure you always have overhead clearance, always be aware that:
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re-paving or packed snow may have reduced the clearances since the heights were posted at bridges and overpasses.
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some roads can cause a vehicle to tilt.
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an empty vehicle is taller than a loaded one.
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All of the above.
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9.
Empty trucks have the best braking. True or False?
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It depends on the cargo.
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False.
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True.
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It depends on the truck.
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10.
Bracing is used to:
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protect the cargo from weather.
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increase the height of the vehicle’s center of gravity.
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prevent movement of cargo.
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make cargo easier to unload.
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