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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. If there is a fire in your vehicle, do NOT:
notify emergency services.
pull into a service station.
park in an open area.
2. When you leave your vehicle you should:
apply the service brake.
leave the key in the ignition.
None of the above.
3. What should you do if your vehicle starts hydroplaning?
Accelerate slightly, then push in the clutch to slow down.
Release the accelerator and push in the clutch to let the wheels turn freely.
Apply the brakes and countersteer to regain control of the vehicle.
4. When using the controlled braking method, you:
apply the brakes as hard as you can without locking the wheels.
apply the brakes all the way and release brakes when wheels lock up.
repeatedly tap the brakes as fast as you can.
5. If you are driving a 40-foot vehicle at 35 mph, you should leave at least _____ between you and the vehicle ahead.
5 seconds
3 seconds
4 seconds
6. If the low air pressure warning light comes on, you should:
call for help.
continue to drive normally.
stop immediately.
7. If your trailer starts to skid, you should:
keep the rear of your vehicle close to the curb.
release the brakes to get traction back.
use the trailer hand brake (if you have one) to straighten out the rig.
8. How far should you scan ahead when driving?
One block at lower speeds
12-15 seconds
All of the above.
9. When backing, you should:
use the mirrors on both sides.
back quickly.
only use mirror on the driver's side.
10. To make the brakes work, air brakes use:
hydraulic air.
compressed air.
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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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