alabama
CDL Practice Test

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 decrease to a safe speed before entering a curve and then_____through it.

ride the brakes

pump the brakes

accelerate

shift down 2 gears

2 / 40

What should you hook up before backing a tractor to a trailer for coupling?

the electrical service line

the safety bar

there is nothing to be hooked up

the service and emergency air lines

3 / 40

The most dangerous time during the school bus ride is:

When the students become unruly on the bus.

Crossing railway crossing.

When loading and unloading students.

On long bus journeys.

4 / 40

A hazard class that uses transport indexes to determine the amount that can be loaded in a single vehicle is _____.

Class 7 radioactive materials

Class 1 explosives

Class 3 flammable liquids

Class 6 poisons

5 / 40

For what reason do you keep the starter switch key in your pocket during the pre-trip inspection?

so you don't lose it

you will need it to inspect the trailer

you will need it to open the side box

so no one moves the vehicle while you are inspecting underneath it

6 / 40

You must carry a gas mask with you when transporting:

Flammable materials

Chlorine

Poison

Liquid gas

7 / 40

You need to raise the landing gear just to the height of where it clears the pavement before driving.

false

only in raining conditions

true

only in ideal conditions

8 / 40

With the controlled braking method, you _____?

lightly apply braking pressure

apply the brakes all the way until the wheels lock up, release the brakes and apply them again when the wheels start to roll again

repeatedly tap the brakes as fast as you can

apply the brakes as hard as you can without locking the wheels

9 / 40

What might happen if you swing wide to the left before you turn right?

someone might try to pass you on your right

someone might try to pass you on your left

all of these answers are correct

you might damage your leaf springs

10 / 40

You should never brake and should rely only steering inputs to avoid a crash while driving a tanker truck.

True, but only in ideal conditions

True, but only on downgrades

False

True

11 / 40

Liquid surge affects the handling of a tanker by:

Allowing you to stop faster.

Decreasing the wind drag.

Moving the truck in the direction of liquid flow.

Allowing you to take tighter turns.

12 / 40

When should you drain air tanks that do not have an automatic tank drain?

once every 7 days

at the end of each working day

once every 14 days

every 4 hours of the working shift

13 / 40

Select the true statement about what the Air Compressor Governor controls:

it controls when the air compressor pumps air into the storage tanks

it controls when the warning system is activated

it controls when the brakes will be applied

it controls when air is released from the storage tank

14 / 40

How do you check the air compressor governor "cut in" and "cut out" pressures?

decrease the tank pressure by stepping on and off the brake

all of these answers are correct

monitor the air pressure gauge

run the engine at a fast idle

15 / 40

What is the safest way to stop unruly behavior on the bus?

Have the unruly students move to the front of the bus.

Yell loudly for the students to sit down and behave themselves.

Keep checking the rear view mirror so you can see what happened and report to the principal.

Pull off the road in a safe location, secure the bus, stand up, and tell the students what behavior you expect of them.

16 / 40

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

steering knuckle

hydraulic fluid reservoir

tie rod

main spring

17 / 40

How do you release the dolly brakes when coupling twin trailers?

by opening the air tank petcock

by charging the air line

by opening the shut off valve

by flushing the brake line

18 / 40

A tank vehicle:

All answers listed.

Is a vehicle that can transport liquid.

Is a vehicle that can transport bulk fertilizer.

Is a vehicle that can transport liquified gasses.

19 / 40

Which of the following about the front tires on a commercial bus is true?

Can be regrooved or recapped as long as they have 4/32 tread depth.

Must not have recapped or regrooved tires.

Can be recapped, but never regrooved.

Must not be recapped, but can be regrooved.

20 / 40

Select the statement that describes how you could damage the landing gear.

back under the trailer in a straight path

back under the trailer at an angle

have the trailer kingpin centered over the fifth wheel

have the tractor and trailer aligned

21 / 40

Check to ensure that____when inspecting the coupling.

the landing gear handle is free to hang down

there is no slack at all in the air lines

there is minimal slack in the air lines

the electrical cable is unplugged

22 / 40

This object is required to be checked for damage, that it's secure, and strong enough to handle any cargo.

The fifth wheel

The apron

The header board

The platform

23 / 40

Upon what does the amount of liquid you can carry in a load depend?

The legal weight limits.

The weight of it.

The amount of expansion that will occur.

All of the answers listed.

24 / 40

Which of the following is a key steering component?

gear box

leaf spring

torque rod

bearing plate

25 / 40

Suspension systems:

keep the brake drums from failing

keep the load secure

keep the steering wheel tight

keep the axles in place

26 / 40

Which of the following statements is true about speed management?

Speed limits for buses are the same as cars.

The posted speed limit is safe for all conditions.

You should be able to stop within the distance that you can see ahead.

All of these answers are correct.

27 / 40

The correct trailer height when coupling the rear trailer is:

there is 5 inches of space between the lower and upper fifth wheel

the kingpin is touching the fifth wheel

slightly lower than the center of the fifth wheel

when the locking jaws are open around the kingpin

28 / 40

The amount of liquid you can carry depends on:

The density or weight of the liquid.

How much the liquid will expand during the trip.

How much you can legally carry.

All answers listed.

29 / 40

You should____in order to inspect the coupling.

if necessary, use a flashlight

make sure to have space between the lower and upper fifth wheel

have the fifth wheel jaws open

make sure the locking lever is in the open position

30 / 40

Some city transit buses may have a brake-door interlock system, this system:

Works when the rear door is open.

Should be used in emergencies.

Releases the brakes.

Should be used in place of the parking brake.

31 / 40

If your bus is equipped with an emergency exit door, it must:

Always have a red door light turned on.

All of these answers are correct.

Not have any signs, stickers, or markings near it.

Be secured when the bus is being driven.

32 / 40

If your bus has an emergency exit door, it must:

Not have any signs, stickers, or markings anywhere near it.

Be closed when operating the bus.

All of these answers are correct.

Have a red electric door light turned on at all times.

33 / 40

Select the true statement:

None of the answers listed.

Lighter vehicles requiring more braking power to stop compared to heavier vehicles.

Wait as long as possible to brake when driving a heavy vehicle.

A "bobtail" tractor will take longer to stop than a combination vehicle that is fully loaded down to the maximum weight.

34 / 40

Placarded vehicles must carry which type of fire extinguisher?

B-C fire extinguisher

Hazmat extinguisher

A-B fire extinguisher

C-D fire extinguisher

35 / 40

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

clutch brake system

service brake system

parking brake system

emergency brake system

36 / 40

These tires should have a minimum tread depth of 4/32 inches.

Non-steering axle tires

Donut tires

Drive axle tires

Steering axle tires

37 / 40

Which of the following are possible causes of tire fires?

dual tires that touch and under-inflated tires

loose fuel connections or under-inflated tires

poor cargo ventilation or short circuits

improperly loaded cargo and dual tires that touch

38 / 40

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

Yellow iii indicates the highest level of radioactivity.

Black iii indicates the highest level of radioactivity.

Yellow ii indicates the highest level of radioactivity.

White i indicates the highest level of radioactivity.

39 / 40

You must not allow riders to stand:

Between the wheel wells.

Within two feet of an emergency exit.

Within two feet of any window.

In front of the standee line.

40 / 40

A placarded vehicle must have at least ___ placards?

six

four

three

two

Your score is

The average score is 0%

5/5 - (4 votes)

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.

alabama CDL Practice Test

CDL Category Practice Tests

How To Get an alabama Commercial Drivers License

Hit the Open Road

alabama CDL License Test Tips

Additional Information

CDL Testing by the Alabama Law Enforcement Agency

Additional Alabama CDL Helpful Links

alabama
CDL Practice Test