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CDL AIR BRAKES PRACTICE TEST - ARIZONA

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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Arizona CDL knowledge test. The AZ CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Arizona CDL Manual. Take this AZ CDL practice test now to prepare for the actual air brakes test!
1. When you apply the brakes, the brake shoes and linings are pushed against:
the inside of the brake drum.
slack adjusters.
the s-cam.
2. An alcohol evaporator:
is used to reduce the risk of ice in air brake valves and other parts during cold weather.
used to reduce the chance of the front wheels skidding.
protects the air brake system from too much pressure.
3. Perception Distance + Reaction Distance + Brake Lag Distance + Braking Distance = ?
Total Stopping Distance
Stopping Distance - (minus) Brake Fade Distance
Total Air Pressure
4. A dual air brake system:
has a single air brake system, which uses a single set of brake controls.
has two separate air brake systems, which use two separate sets of brake controls.
has two separate air brake systems, which use a single set of brake controls.
5. On front tires, tread should be at least:
2/32 inch
4/16 inch
4/32 inch
6. If a load is 10 feet long, the minimum number of tie-downs required is:
1
2
3
7. Most heavy vehicles require ________ change gears.
single clutching
double shifting
double clutching
8. Excessive use of the service brakes results in overheating and leads to:
reduction of the brake drums.
poor traction.
brake fade.
9. Overloading a vehicle with cargo can have negative effects on all of the following except:
Weight limits
Braking
Steering
10. Emergency brakes and parking brakes must be held on by:
hydraulic pressure.
air pressure.
mechanical force.
 
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AZ CDL Air Brakes Test

Number of questions: 25
Correct answers to pass:20
Passing score:80%
Number of questions: 25
Correct answers to pass:20
Passing score:80%
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