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_____when checking the slack adjusters on S-Cam brakes.

2 / 40

______is a device that connects the service and emergency air lines between the tractor and trailer.

3 / 40

Which of the following statements about loading and unloading cargo tanks is false?

4 / 40

All standing riders must stay:

5 / 40

On tandem axle for trailers, the sliding mechanism and locking device is:

6 / 40

This carries hydraulic fluid or air to the wheel brake assemby.

7 / 40

Which of the following types of emergency equipment must you have on your bus?

8 / 40

Which of the following statements about downshifting is NOT true?

9 / 40

Select the statement that is not part of the air-brake system:

10 / 40

How do you test the trailer service brakes?

11 / 40

The trailer height is correct for connecting a converter dolly to a second or third trailer when:

12 / 40

When driving normally, some drivers use the hand valve before applying the brake pedal to prevent jack knifing. Select the most appropriate response to this statement.

13 / 40

What must vehicles with air brakes have?

14 / 40

When must a driver’s inspection report be completed?

15 / 40

The most dangerous time during the school bus ride is:

16 / 40

Which of the following parts do not get checked in the Bus Interior inspection:

17 / 40

What are some things you should check on the front of your vehicle when doing the walk-around inspection?

18 / 40

For Division 1.1 or 1.2 Explosives A, should the floor liner required be stainless steel?

19 / 40

Select how you would check the truck's slack adjusters.

20 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 Dangerous When Wet material?

21 / 40

Select the true statement about handling triples and doubles:

22 / 40

Select the statement that describes smooth bore tanks:

23 / 40

When there is a hazardous materials emergency. You should:

24 / 40

Why is understanding the loading and unloading procedures so critical?

25 / 40

If you are driving a 100-foot truck with double trailers at 30 mph in dry conditions, how many seconds of space should there be between your truck and other vehicles?

26 / 40

A placard is required for a combustible liquid at?

27 / 40

Select the part that is not a part of the drum brake:

28 / 40

When you discharge an unruly passenger, you must choose a place that is:

29 / 40

Select the true statement in regards to as why you should make sure the fifth wheel plate is greased as recommended:

30 / 40

When backing your vehicle, which of the following is NOT recommended

31 / 40

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

32 / 40

Which of the following types of cargo can never be carrier on a bus with riders?

33 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

34 / 40

What is a king pin?

35 / 40

How should the pintle hook be when backing a dolly under the second trailer?

36 / 40

After coupling with a trailer, what position should the front trailer supports be in before driving away?

37 / 40

What should you do if you start a trailer skid?

38 / 40

The minimum tread depth for steering axle tires is:

39 / 40

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

40 / 40

Select the true statement about tractor protection valve:

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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.