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The CDL general knowledge test is required to be taken by all CDL applicants. The Arizona 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 Arizona 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 AZ 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. The steering wheel should:
be held firmly with both hands.
be held firmly with the right hand.
be held firmly with the left hand.
2. Retarders:
improve traction.
can be noisy and may not be permitted everywhere.
help to increase brake pressure.
3. When should you use the 4-way emergency flashers instead of flashing the brake lights to warn the drivers behind you?
When you are driving very slowly or are stopped.
At night time.
When visibility is poor.
4. When should you inspect your vehicle and cargo?
Before, during and after a trip.
Before and during a trip.
Before and after a trip.
5. Why should you avoid driving too near the edge of the road?
To keep other vehicles from passing you.
To get a better view of the road ahead.
Driving too near the edge of the road can cause the top of your vehicle to hit roadside objects.
6. Drivers who change their state of domicile to Arizona have _______ to change their CDL.
30 days
45 days
15 days
7. To test the service brake:
push the brake pedal firmly while going about 5 mph.
shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
gently try to pull forward with the trailer parking brake on, then release the brake.
8. When approaching a stopped bus, you must be aware that:
passengers may cross in front of or behind the bus.
passing a stopped bus is illegal.
a student may be driving the bus.
9. The distance your vehicle travels, in ideal conditions, from the time you see a hazard until your brain recognizes it, is called:
Stopping distance
Perception distance
Reaction distance
10. The total weight of a single vehicle including its load is called:
Gross Vehicle Rating (GVR)
Gross Vehicle Weight (GVW)
Gross Vehicle Weight Rating (GVWR)
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Number of questions: 50
Correct answers to pass:40
Passing score:80%
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