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 are checking the_______when looking at the dipstick to see if the lubrication is at the safe operating range or above the refill line.

oil level

washer fluid level

battery fluid level

coolant level

2 / 40

A driver of a tank vehicle should take curves, off ramps, and on ramps at a speed lower than the posted speed limit.

True but only in ideal conditions

True

False

True but only in rainy conditions

3 / 40

When there is a hazardous materials emergency. You should:

Contact emergency authorities.

All of these answers are correct.

Prevent smoking and keep open flames away.

Keep people away and warn them of the danger.

4 / 40

An "A/W" the first column of the hazardous materials table means:

It is ok to ship this material by air only.

There is no restrictions with this material if shipped by water only.

This material has no restrictions when shipped by air and/or water.

This material is only restricted when shipped by air and/or water.

5 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?

Impossible to tell without more information

Only if the arm is down telling vehicles to stop

Yes

6 / 40

Bus drivers must have a commercial driver license if they drive a vehicle designed to seat more than:

20 or more persons, excluding the driver.

16 or more persons, including the driver.

10 or more persons, including the driver.

15 or more persons, including the driver.

7 / 40

This object is not checked at the rear of the trailer.

The back doors

The header board

The bumper

The mud flaps

8 / 40

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

a result of excessive speed

a result of changing lanes too frequently

a result of following behind too closely

a result of rollover

9 / 40

What handling effect should you expect when your tank has baffles?

The surge will be slower than a tank without baffles.

There is no difference in handling when you have baffles.

There will not be as much side to side surge compared to a tank without baffles.

There will not be as much front to back surge compared to a tank without baffles.

10 / 40

Select the true statement in regards to stopping distance and speed:

Larger / heavier vehicles generally take longer to stop.

You require 4 times as much stopping distance when driving at 40 mph compared to 20 mph.

All answers listed.

A wet road will double the stopping distance at any speed.

11 / 40

Select the true statement about handling triples and doubles:

triples and doubles handle the same as singles

because of the crack the whip effect, the rear trailer of a 100-foot triple is less likely to tip over

due to off-tracking, a triple bottom rig can come to a stop faster than a 5-axle tractor

a tip over of the rear trailer can occur due to sudden movements of the steering wheel

12 / 40

A "transport index" relates to products that are:

Meant for human consumption

Overweight

Radioactive

Liquid

13 / 40

What do you need to do to supply air to the air tanks of the second trailer?

open the shut off valve at the back of both trailers

close the shut off valves at the back of each trailer

none of the answers listed

open up the shutt off valves on the rear of the first trailer and close the shut off valve at the back of the second trailer

14 / 40

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

hold the steering wheel firmly

engage the brakes hard and immediately

you need to be aware that a tire has failed

stay off the brake pedal

15 / 40

The amount of liquid you can carry depends on:

How much the liquid will expand during the trip.

The density or weight of the liquid.

How much you can legally carry.

All answers listed.

16 / 40

Which of the following statements is FALSE?

anti-lock braking systems (ABS) only activate when wheels are about to lock

stopping is not always the safest thing to do in an emergency

if a tire blows, you should put the brakes on hard to stop quickly

you can almost always turn to miss an obstacle more quickly than you can stop

17 / 40

It takes special care to drive tankers with liquid in them because:

The low center of gravity of the load.

The baffles create odd rocking motions.

The movement of the liquid even when the truck is stopped.

The high center of gravity of the load.

18 / 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?

19 / 40

How many different hazard classes are there?

20 / 40

An emergency escape ramp should be used _____.

only in ideal conditions

only when it is raining

only when not carrying a load

any time the truck experiences a significant loss of braking power

21 / 40

While completing the 3rd component of the air brake check of a combination vehicle, at what psi should the tracor protection valve and parking brake valve should pop out?

20 psi

They should never pop out

70 psi

40 psi

22 / 40

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

Off the regular route.

As safe as possible, or the next stop.

The next stop.

Dark and poorly lighted.

23 / 40

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

you should always keep your vehicle to the right side of the lane

you should drive down the center of both lanes over the pavement markings

you should try to avoid driving next to others when possible

high wind gusts will not cause any issues for doubles or triples

24 / 40

Select why you should not use the trailer hand valve while driving:

there is a possibility it will make the trailer skid

it does not work as well as the foot brake does

it will cause the tractor to shake

you should only ever use the parking brake

25 / 40

Bus drivers must have a CDL if they drive a vehicle:

That has air brakes.

That has a gross weight rating of more than 26,000 pounds.

That is designed to carry more than nine passengers.

Designed to seat more than 16 or more persons, including the driver.

26 / 40

What are the three types of emergency equipment that you must have with your vehicle?

none of these answers are correct

first aid kit, fire extinguisher, flares

fire extinguisher, spare electrical fuses, warning devices for parked vehicles

warning devices for parked vehicles, first aid kit, flares

27 / 40

When is it acceptable for non-hazardous materials to be described by hazard class words or identification numbers?

Always

Never

During an emergency

For hazards not described in the hazmat manual

28 / 40

What are the dividers that are inside tankers that have an opening at the bottom and top?

Layers

Baffles

Taffles

Bulkmets

29 / 40

A placard is required for a combustible liquid at?

100 gallons

110 gallons

Any amount

1,001 pounds or more

30 / 40

At what pressure is the safety valve in the air compressor tank set to open?

100 psi

125 psi

150 psi

225 psi

31 / 40

You are driving a 60 foot truck at 55 MPH, how much space (in seconds) should you keep in front of you?

6 seconds

7 seconds

5 seconds

8 seconds

32 / 40

If your engine runs a pump used during delivery of compressed gas, should you turn off the engine before or after unhooking hoses after delivery?

Turn it off before product transfer, before you hook the hose.

Turn it off after product transfer, before you unhook the hose.

None of these answers are correct.

Turn it off during product transfer, while unhooking the hose.

33 / 40

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

the back trailer

the tractor

all are equally likely

the front trailer

34 / 40

Which of the following is NOT an appropriate reason to flash your braking lights?

to warn drivers behind you when you need to slow down

to warn vehicles approaching you from behind that you are driving slowly

to alert drivers behind you that there are hazards ahead

to signal to tailgaters that they are too close to your vehicle

35 / 40

You should keep a minimum of ____between another vehicle and the double trailer with 100 ft truck driving at 30 mph.

8 seconds

13 seconds

15 seconds

10 seconds

36 / 40

When driving a combination vehicle, the trailer breaks away severing the air lines. The trailer brakes should come on and ____.

the tractor to lose all air pressure in the tanks

the tractor will gain air pressure

the tractor protection valve will close

the trailer supply valve will remain open

37 / 40

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

use the lowest reverse gear

back as slow as possible

back towards the right side

back and turn towards the driver's side

38 / 40

What are the 3 methods for securing a second trailer before coupling?

all answers listed

parking on level ground, chocking the tires, and charging the trailer air tank if it doesn't have spring brakes

chocking the tires, parking on level ground, and charging the air tank

parking against another trailer, locking the trailer door, and chocking the tires

39 / 40

Which two special conditions indicate that you should downshift?

starting down a hill and finishing a curve

starting up a hill and entering a curve

starting up a hill and finishing a curve

starting down a hill and entering a curve

40 / 40

Select the true statement in regards to brake drums or discs:

they should not have cracks that are longer than half the width of the friction area

the linings should fit loosely around the brake shoe

they are not allowed to have any cracks

they should always be kept well-greased up

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