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The CDL general knowledge test is required to be taken by all CDL applicants. The Washington 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 Washington 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 WA 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. Weight that is loaded so there is a high center of gravity:
makes a vehicle easier to handle.
causes greater chance of rollover.
reduces the chance that the load will shift to the side or fall off.
2. If you are feeling sleepy, you should:
get some coffee.
pull off the road and rest.
slow down.
3. "Tire load" means:
the minimum weight a tire can carry at a specified pressure.
the maximum safe weight a tire can carry at a specified pressure.
the specified weight a tire can carry at the maximum pressure.
4. If your vehicle has power steering, during your pre-trip external inspection you must check that:
there are 2 lit red lights indicating it's there.
there are no power steering fluid leaks or damage to the power steering hoses.
the engine rpm is down close to idle.
5. Checking your vehicle's suspension system includes checking:
the air suspension systems.
the mounting brackets.
the tires.
6. Which of the following statements about staying alert while driving is true?
Drinking a cup of coffee will do more to keep you alert than a 20 minute nap.
Some drugs can overcome fatigue.
None of the above.
7. You are more at risk of being fatigued:
after getting more than 8 hours of sleep.
when stopping periodically during long trips.
when driving alone.
8. A steering wheel play of more than ___ degrees can make it hard to steer.
9. A passive railroad crossing is one that:
requires you to stop and wait until the traffic control device installed at the crossing tells you to proceed.
has a traffic control device installed at the crossing to regulate traffic.
does not have any type of traffic control device.
10. The one-way check valve:
keeps air from going out if the air compressor develops a leak.
keeps your wheels from locking up when you brake hard.
supplies air to the trailer air tanks.
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WA CDL Practice Test

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