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Air Brakes Sample "Test 1"
All tests are provided for informational purposes only, and CDL Tutoring .com shall not be liable for any errors in the content, or for any actions taken by the user in reliance thereon.

These questions are not the exact questions that will appear on a CDL exam, but rather, are indicative of the types of questions you may see.

For each question click the button in front of the answer you think is correct. When you are finished click "Get Score" to see mistakes OR "Clear" to start over again.


1. What are the three braking systems?

A _ The parking brake and emergency brake and thermal system
B _ The service brake and parking brake and emergency system.
C _ The service brake and emergency and the inverse system.

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2. What is used to make the brakes work?

A Compressed Oxygen.
B Compressed Nitrogen.
C Compressed air.

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3. What does the air compressor do?

A Pumps air into the air storage tanks.
B Keeps the tires inflated to proper pressure
C Comes on only if you have to make an emergency stop.

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4. What does the air compressor governor control?

A It controls emergency warning systems.
B It controls when the compressor will pump air into the air storage tanks.
C It controls how the compressor will pump air into the air lines.

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5. How much compressed air must the storage tanks hold?

A At least one hundred and twenty pounds of air.
B A maximum of one atmosphere.
C Enough air to allow brakes to be used when the air compressor stops working.

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6. If oil and water collect in the air tanks what can happen to the brakes?

A The brakes can fail.
B Brake linings will automatically slip loose
C The brakes will work better.

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7. No automatic tank drains - when should you drain the air tanks?

A Once a week.
B Once a month.
C Every day.

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8. Where will you find the drain valve for each air tank?

A In the bottom of the tank.
B At the top of the tank.
C It is usually found above the tank.

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9. What are the two types of air tank drains?

A Manually operated. . . Emergency.
B Automatic . . . Emergency
C Manually operated. . . Automatic.

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10. What is a purpose of an alcohol evaporator?

A It takes alcohol from the air system.
B It reduces risk of ice in brake valves and other parts in cold weather.
C It is designed to save fuel in warm weather.

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Click "Get Score" to see right answers OR Click "Clear " to start over again.

Score =
Correct answers:


CDL Sample Tests
For Individual State Requirements, XXXXXXX


The following sample tests are designed to assist you in preparing for your testing.
While these questions are not the exact questions that you may see, they are fashioned after actual questions.
We use various sources for our sample tests, therefore some questions may appear on more than one sample test.

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CDL Sample Test Selection Chart

Air Brakes
Endorsement

Cargo
Tank
Endorsement

Doubles
Triple
Trailer
Endorsements

General
Knowledge

Hazardous
Materials
Endorsement

Passenger
Endorsement

Miscellaneous
Tests

Test A

Test B

Test C

Test D

Test E

Test F

Test G

Test H

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Test A

Test B

Test C


Combination
Vehicles
Endorsements

Test A

Test B

Test C

Test D

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Test A

Test B

Test C

Test D

Test E

Test F

Test G

Test H

Test I

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Test A

Test B

Test C

Test D

Test E

Test F

Test G

Test H

Test I

Test J

Test K

Test L

Test M

Test N

Test O

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Test G

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Test J

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Test L

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Test A

Test B

Test C

Test D

Test E

Test F

Test G

Test H

Test I

Test J


Bus and
Coach
Endorsements

Test A

Test B

Test C

Test D

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On Road
Driving
Test

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Pre Trip
Inspection
A

*

Pre Trip
Inspection
B

*

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CDL Basic Requirements

You must be at least 18 years of age to hold a CDL. Under federal law, you must be a commercial driver at least 21 years of age to drive across state lines, transport hazardous materials or transport interstate freight (e.g. mail) within the state.

If you want to learn to drive commercial motor vehicles, you must get a commercial driver's license instruction permit. To obtain a CDL instruction permit, you must pass the CDL general knowledge exam and the other knowledge exams for the vehicles that you want to drive. For example, if you want to learn to operate a tank vehicle and a passenger bus, you must take the general knowledge exam, the tank vehicle exam and the passenger vehicle exam. If you want to learn to drive a school bus, you must take the general knowledge, school bus and passenger vehicle exams.

The CDL instruction permit allows you to drive a commercial vehicle of the class and type shown on the permit only when a person licensed to drive the same type of vehicle is with you. You must hold the CDL instruction permit a minimum of 30 days or show successful completion of C.D.T.S.

You need to get your CDL for the class vehicle you plan to drive plus you may need additional endorsements.

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