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

Tires should should be replaced:

all of these answers are correct

when the tread separates

when there are broken valve stems

if the tread depth on your front tires is less than 4/32 deep

2 / 40

____is the most common type of foundation brakes used by heavy vehicles.

Wedge drum

None of the answers listed

Rectangle brakes

S-Cam drum

3 / 40

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

engage the brakes hard and immediately

stay off the brake pedal

you need to be aware that a tire has failed

hold the steering wheel firmly

4 / 40

You need to be extra careful when driving smooth bore tanks:

When stopping or starting.

When hauling food or milk products.

When unloading or loading.

All answers listed.

5 / 40

What is a common cause of tire fires?

all of these answers are correct

cold tires

underinflated tires

overinflated tires

6 / 40

You should_____when the low pressure warning is activated:

pump the brake pedal to come to a stop immediately

maintain highway speed and keep an eye on your air pressure gauge

wait until the air brakes kick in automatically

come to a safe stop while you still have control of the brakes

7 / 40

The most stable tanker shape is:

Elliptical

Round

Square

Cylindrical

8 / 40

When does stab braking occur?

when the wheels start rolling, apply the brakes

apply pressure all the way on the brake pedal

when the wheels lock up, release the brakes

all of these answers are correct

9 / 40

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

Have the hazardous materials highlighted.

Any one of the above.

Identify the materials by the letter x or rq in the hm column.

Describe the hazardous materials first.

10 / 40

A safe haven is:

The slang term for the last stop at the end of your driving day when carrying hazardous materials.

A place to stay once you have reported your company for illegal activity.

A place where it is safe to dump any kind of hazardous materials.

A place that has been approved to park unattended vehicles carrying explosives.

11 / 40

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

First day of spring

For fresh air

Whenever you enter a tunnel

Never

12 / 40

What is the value of the overhead rear-view mirror inside of the bus?

To monitor passenger activity.

To provide visibility directly in the back of the bus.

To monitor the driver's appearance.

To check blind spots.

13 / 40

You should be in the proper gear before going down a hill because:

brakes may fail or fade from excessive heat due to relying on them too much and not using the engine brake effect

it helps control your speed better

water may build up in the air tanks if you do not rely on the engine brake

it builds up the air pressure in the air tanks

14 / 40

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

Talking with riders while driving.

Refueling in a closed building with riders on board.

Towing a disabled bus with riders aboard when getting off would be a safe option.

Fueling your bus with riders on board if about to run out of fuel.

15 / 40

You should check the_____when loading small tanks equipped with bulkheads.

distribution of the weight

fuel to air ratio

percentage of water

expansion rate

16 / 40

The trailer should be lowered so that _____.

you are able to use the landing gear to make adjustments

the tractor comes in contact with the nose of the trailer

it is slightly raised when the tractor is backed under it

the trailer is high above the fifth wheel

17 / 40

Select how you can tell if your vehicle is equipped with an anti-lock braking system:

the vehicle is manufactured after 1990

the vehicle is manufactured after 2005

the vehicle is manufactured after 1998

the vehicle is manufactured after 2001

18 / 40

Which of the following is a necessary qualification for non-bulk packaging?

All of these answers are necessary qualifications.

Maximum net mass of 400 kg, or less than 450 l if used as a receptacle for a solid.

Maximum water capacity of 454 kg or less if used as a receptacle for gases.

A maximum capacity of 450 l or less if it is used as a receptacle for liquids.

19 / 40

As the driver of a bus, how can you best avoid hindering other traffic on the highway?

By driving faster than the other traffic.

By staying in the right lane if you can.

By never passing.

By passing only the slowest vehicles.

20 / 40

You should follow behind other vehicles ______when traveling under 40 mph.

as close as possible so other drivers won't cut in front of you

at a distance of 1 second for every 5 feet of your vehicle length

at a distance of 1 second for every 15 feet of your vehicle length

at a distance of 1 seconds for every 10 feet of your vehicle length

21 / 40

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

Be closed when operating the bus.

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

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

All of these answers are correct.

22 / 40

Select the portion of the combination vehicle that is most likely to turn over suddenly when pulling a double trailer:

the tractor

all are equally likely

the back trailer

the front trailer

23 / 40

Select the true statement in regards to quick steering movements and double trailers:

it is easier to tip doubles and triples from quick steering movements than other vehicles

you should apply a firm pressure to the brake pedal at the same moment you do quick steering movements

nothing will occur

it is easier to countersteer doubles/triples than other vehicles

24 / 40

Select the reason as to why air tanks need to be drained:

to provide greater control of your vehicle

tanks usually do not need to be drained

to prevent the left sided brake from locking up

to release water and other contaminents which may cause brakes to fail in freezing weather

25 / 40

The bolst, brackets, or bushings that attach the air bag and/or spring to the vehicle and axle frame are _____.

shock dampeners

spring mounts

none of the answers listed

lug bolt

26 / 40

"Outages" is the word to describe the amount of space required for liquids to expand in as they warm.

False, it's when the vehicle power system fails in some way

True

False, it's when the vehicle air braking system fails in some way

False, it's when the vehicle engine fails in some way

27 / 40

You downshift automatic transmissions ______.

none of these answers are correct

half way down a hill

before going down a hill

at the bottom of a hill

28 / 40

Your bus starts to lean toward the outside on a banked curve, you are:

Driving on a wet surface.

Driving too fast.

Driving with bad tires.

Driving in the mountains.

29 / 40

How do you check the power steering fluid?

Via the power steering fluid dipstick.

By looking through the reservoir sight glass.

Via indicator light on the dashboard.

Undo the oil fill cap and check the level.

30 / 40

Select the true statement about tractor protection valve:

it is closed by the parking brakes

all of these answers are correct

if the air supply drops to a certain level it will automatically close itself

it provides the air supply to the brake system

31 / 40

The cause of almost half of all truck driver deaths are:

a result of following behind too closely

a result of excessive speed

a result of rollover

a result of changing lanes too frequently

32 / 40

It has just reached freezing. Which of the following areas is slippery?

wet-looking road

a bridge

all of these answers are correct

a shaded area

33 / 40

Which seats must have a seat belt:

All of these answers are correct.

Senior citizen seats.

The driver's seat.

Women and children seats.

34 / 40

What are the liquid tight separations between compartments inside tanks called?

Layers

Bulkheads

Waffles

None of the answers listed

35 / 40

How should the shut off valves at the rear of the trailer be when inspecting doubles?

closed at the rear of the last trailer and front trailer

none of the answers listed

open at the rear of the last trailer and front trailer

closed at the rear of the last trailer and open at the rear of the front trailer

36 / 40

You should be extra cautious when___while driving a smooth bore tanker combination.

stopping and starting

driving up a hill

unloading or loading

driving down a hill

37 / 40

When inspecting the_____you pump the pedals 3 times and then hold it down for 5 seconds feeling for no movement to occur.

emergency brakes

hydraulic brakes

engine brakes

all answers listed

38 / 40

Select the true statement:

you should always ride the brakes

wait to brake heavy vehicles for as long as you can

light vehicles require more braking power than heavier vehicles

a bobtail tractor will take longer to stop than a combination vehicle that is loaded to the max

39 / 40

This gauge has a governor cut-off.

Oil pressure gauge

The coolant temperature gauge

Air gauge

The ammeter gauge

40 / 40

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

A deduction of 15 points.

An automatic failure of the vehicle inspection test.

The driver must restart the pre-trip from the beginning.

None of the answers listed.

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