alabama
CDL Practice Test

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The practice tests below offer CDL practice test questions in all the different topic areas you’ll see on the Alabama CDL test. The CDL tests are free and can be taken as often as you’d like to help you in your preparation for earning an Alabama commercial driver's license. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50 minute time limit. You may not go back once you answer a question. Click the “Start Test” button below to start your Alabama CDL practice test.

1 / 40

Who is responsible for certifying on the bills of lading that the hazardous materials are prepared properly?

2 / 40

Select the factor that has no effect on how much liquid you can carry:

3 / 40

What will occur as a result of failing to perform all 3 components of the air brake check?

4 / 40

Shifting into a lower gear and removing your foot off of the accelerator to slow your vehicle is known as?

5 / 40

What is the best way to see the sides and rear of your vehicle?

6 / 40

Which of the following is not a prohibited practice on the bus:

7 / 40

When would you lock some emergency roof hatches in a partly open position?

8 / 40

While completing the 1st component of the air brake check you are required to fully push down on the foot brake and _____.

9 / 40

If you must stop on the shoulder of the road, you should place warning devices at all of the following places except...

10 / 40

A placarded vehicle must carry what type of fire extinguisher?

11 / 40

If you double your speed, what will happen to your stopping distance?

12 / 40

Where should the safety catch for the fifth wheel locking lever be located for coupling to be complete?

13 / 40

Which of the following statements about "Radioactive" labels is true?

14 / 40

How do you determine if slack adjusters need to be adjusted?

15 / 40

Which of the following is a reason to evacuate the school bus?

16 / 40

When transporting both hazardous and non hazardous materials, your bills must:

17 / 40

How much space should you see between the lower and upper fifth wheel when checking the coupling of a converter dolly?

18 / 40

Select the accurate statement in regards to rolling up the landing gear to complete the coupling process.

19 / 40

Where are the two main places where the hazardous material identification number appears?

20 / 40

Which of the following should you NOT do if you experience a tire failure?

21 / 40

Some school busses are marked with the LNG placard. What does LNG stand for?

22 / 40

Which of the following is NOT a part of the steering system?

23 / 40

Anti-lock brakes:

24 / 40

There are 2 reasons as to why hauling liquids take special care. One reason is the ___center of gravity.

25 / 40

What is a supply pressure gauge used for?

26 / 40

The average person requires how many hours of sleep per 24 hour period?

27 / 40

You do not have to stop at railroad crossings, but must slow down and carefully check for other vehicles:

28 / 40

The minimum tread depth for tires other than the front tires is ____.

29 / 40

Which of the following types of cargo must never be carried on a bus with passengers?

30 / 40

What action should you take before driving while drowsy?

31 / 40

The floor liner for explosives may not:

32 / 40

Class A explosives must not be transported in a combination vehicle if the vehicle includes:

33 / 40

When does your vehicle's single brake system need an adjustment?

34 / 40

This component should be checked that it is solid, securely bolted to the tracture frame, and clear of objects.

35 / 40

The sliding mechanism and locking device for a tandem axle on trailers is:

36 / 40

Select the load of the trailer that will require the shorter distance to stop.

37 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

38 / 40

Select the true statement about dual air brake systems:

39 / 40

What should you do if the low air pressure warning comes on for only one system in a truck or bus that has a dual air brake system?

40 / 40

You should activate hazard lights within approximately how many feet before railroad crossing?

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CDL Category Practice Tests

How To Get an alabama Commercial Drivers License

Applicants must be of the legal age of 18 or older. Those between the ages of 18 and 21 are only permitted to drive a commercial vehicle within the state of Alabama. Those age 21 and older may drive a commercial vehicle across state borders. Only those aged 21 and older may apply for their hazardous materials endorsement. All applicants must possess a DOT Medical Card.

An applicant’s driving record will be considered when applying for a CDL license. There are specific items in which a driver will be disqualified for a commercial driver’s license. These include:

  • Any suspension/revocation 36 months before submitting an application.
  • Any six-point violation or conviction of operating a motor vehicle impaired 24 months prior to submitting an application.
  • Any current denial, cancellation, suspension, or revocation of driver’s license.
  • Possessing multiple driver’s licenses from various States.
  • Not meeting certifications on BFS-103 CDL Certification Form.

Alabama requires all CDL applicants to complete both a knowledge test and a skills test. Alabama offers the following CDL license endorsements:

  • S – School Bus
  • T – Double Trailer
  • P – Passenger
  • N – Tank Vehicles
  • H – Hazardous Materials

Hit the Open Road

alabama CDL License Test Tips

The knowledge tests are presented in written form for Class A, B, and C applicants. All classes are required to take a 50 question assessment. Those applying for a Class A CDL will need to complete an additional 20 questions about combination vehicles. Applicants seeking to drive vehicles with air brakes must complete a 25 question air brake assessment. Those seeking any endorsement other than hazardous materials must complete a 20 question assessment that is endorsement specific. Those applying for the hazardous materials endorsement must complete a 30 question knowledge test. All applicants must receive a score of 80 percent or higher on each test to pass.

A skills test is required for all CDL applicants regardless of Class. The School Bus and Passenger Endorsements require a skills test as well. All applicants applying for Air Brakes Certification must use a vehicle that is equipped with air brakes for their skills test. The CDL skills test consists of a vehicle inspection test, basic control skills test, and a driving test. All three test sections must be passed for CDL approval. Failure in any skills test area automatically fails the applicant.

Additional Information

CDL Testing by the Alabama Law Enforcement Agency

The Alabama Law Enforcement Agency administers the certifying and testing of commercial drivers in the state. To get more information contact them via: Website:  https://www.alea.gov/dps/driver-license
Phone:  334.242.4400
Email:  [email protected]

Additional Alabama CDL Helpful Links

Please use the links below to access more valuable Alabama CDL testing resources and to learn more about driving test resources for the state of Alabama.