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

You should line up_____when getting ready to back under the trailer.

2 / 40

Which is more likely to tip over due to the crack the whip effect?

3 / 40

What will probably happen if the converter dolly is still under the second trailer and the pintle hook is unhooked?

4 / 40

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

5 / 40

What is the earliest way to notice a trailer skid?

6 / 40

You should____when an emergency requires you to quickly stop due to a crash.

7 / 40

You should expect____when backing a tractor under a trailer.

8 / 40

Before backing under the trailer after connecting the air lines you should:

9 / 40

The bus driver must accept responsibility for supervising and controlling students while on the bus route. Who is the person in charge?

10 / 40

A tractor should not be backed under a trailer until the whole air system is:

11 / 40

How high should you crank the landing gear?

12 / 40

Tankers used to transport hazardous materials on vehicles must be marked with:

13 / 40

You should_____to make an emergency stop with air brakes when using the stab braking method.

14 / 40

If you have riders on board, you must never refuel:

15 / 40

Two causes of tire fires are ______.

16 / 40

Before pulling away, make sure the landing gear of the trailer is:

17 / 40

You should check the_____when loading small tanks equipped with bulkheads.

18 / 40

Animals and human foodstuffs should not be loaded in the same vehicle with?

19 / 40

An example of a low pressure warning signal for air brakes is:

20 / 40

With the engine cut off and the brakes released the air loss in a straight truck or bus should not be more than:

21 / 40

What does the service brake system do?

22 / 40

Select the true statement in regards to managing the space to the sides:

23 / 40

The blind spot behind the bus could extend to how many feet?

24 / 40

The pintle hook should be_____ and the converter dolly air tank drain valve is___when doing a walk around inspection of a triple or double trailer.

25 / 40

Select the true statement in regards to the liquid inside of a bulk tank causing a tank truck to roll sideways.

26 / 40

Select the action that is not recommended when driving on slippery roads:

27 / 40

Select the true statement:

28 / 40

If there is no traffic light or attendant, how far from the draw of a drawbridge must you stop?

29 / 40

What should you hear when you test the trailer brakes by opening the service air line at rear of trailer with the hand valve on?

30 / 40

The act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others is known as.

31 / 40

How do you check the connection after locking the kingpin into the fifth wheel?

32 / 40

When approaching railroad tracks, stop your bus:

33 / 40

It is very important that you never smoke around which hazard classes?

34 / 40

Select when you should use the parking brake:

35 / 40

What type fire extinguisher is required in the power unit of a placarded vehicle?

36 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

37 / 40

What is the normal operating range for a truck's oil pressure?

38 / 40

How can you determine if your vehicle is equipped with ABS?

39 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

40 / 40

There must not be more than_____for engine compartment belts.

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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.