Alaska
CDL Practice Test

The tests offered here are designed to help you prepare for your Alaska CDL test. These Alaska CDL practice tests are free and you may take them as often as you need to. You will be able to practice different CDL test questions different topic areas you’ll see on the test as you prepare to gain your commercial driver license in Alaska. 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 begin. Good luck!

1 / 40

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

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

to warn drivers behind you when you need to slow down

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

to alert drivers behind you that there are hazards ahead

2 / 40

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

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

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

you should try to avoid driving next to others when possible

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

3 / 40

If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?

Make sure there is plenty of space between the two.

Make sure the battery acid is loaded on top of the silver cyanide.

Make sure the silver cyanide is loaded on top of the battery acid.

Inform someone and not load the battery acid.

4 / 40

This object should not be spliced, cut, chafed, or worn through to allow steel braid to show.

Mud flaps

The lockjaw

Tires

Electric/air lines

5 / 40

When accelerating:

do not engage the clutch before you take your foot off the brake

always use the parking brake to slow down

speed up smoothly and gradually and avoid jerking

"hammer down" when your wheels start to spin

6 / 40

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

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

All answers listed.

Larger / heavier vehicles generally take longer to stop.

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

7 / 40

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

Connector rods

Brake drums

Slack pieces

Brake lines/hoses

8 / 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

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

close the shut off valves at the back of each trailer

9 / 40

How do you make sure the trailer height is correct before coupling?

visually check that the lead trailer is higher than the fifth wheel so that the trailer will lower when the dolly is pushed under it

visually check that the rear trailer is lower than the fifth wheel so that the trailer raises slightly when the dolly is pushed under it

visually check that they are level height wise

you do not need to do a visual check

10 / 40

Urban mass transit coaches may have a brake and accelerator interlock system. Which of the following statements is true?

The interlock applies the brakes and holds the throttle in idle position when the rear door is open.

Do not use this safety feature in place of the parking brake.

The interlock releases when you close the rear door.

All of these answers are correct.

11 / 40

When backing, what is the best method to use to avoid blind spots?

back towards the driver's side, where you can see better

use a helper

use mirrors on both sides

look at your path

12 / 40

Where are shut off valves located on trailers that are doubles or triples?

on emergency and service air lines

on emergency air lines

on service air lines

on parking brake lines

13 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

At least 25 feet.

At least 50 feet.

At least 75 feet.

At least 100 feet.

14 / 40

Select the true statement in regards to crossing your air lines on a new trailer with spring brakes

you will have brakes that are not operational

you will be unable to realse the trailer brakes

there is no way to know if there is an issue

you will be unable to release the tractor brakes

15 / 40

On a drawbridge, you do not need to stop, but must slow down and make sure it's safe, when:

Both of these answers are correct.

None of these answers are correct.

There is a traffic light showing green.

The bridge has an attendant or traffic officer who controls traffic whenever the bridge opens.

16 / 40

The two main things to look ahead for while driving are _____.

fire and flooding

bridges and tunnels

traffic and road conditions

truck stops and police

17 / 40

What action should you take before driving while drowsy?

drink energy drinks

open your vehicle windows for some fresh air

pull off the road and get some sleep

drink a cup of coffee

18 / 40

The system that needs to be checked for signs of leaks with rust or carbon soot and damage is the _____.

fifth wheel

exhaust

none of the answers listed

air brake system

19 / 40

Charter drivers should not:

Explain rules at the start of the trip.

Mention rules at the start of the trip.

Allow riders on the bus until departure time.

Remind riders about rules once trip begins.

20 / 40

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

brake drums

brake disc

air lines

slack adjusters

21 / 40

Suspension systems:

keep the axles in place

keep the steering wheel tight

keep the load secure

keep the brake drums from failing

22 / 40

Overhead inside mirror is used to:

See the area where students exit the bus.

See all of the students.

Monitor traffic that approaches and enters the blind spot area.

See the blind spot immediately behind the bus.

23 / 40

A disruptive passenger:

Should not be discharged where it would be unsafe for them.

Is not your responsibility.

May be thrown off the bus.

Should not be allowed on the bus.

24 / 40

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

someone might try to pass you on your left

all of these answers are correct

someone might try to pass you on your right

you might damage your leaf springs

25 / 40

Operating a motor vehicle with the intent of doing harm to others or physically assaulting a driver or their vehicle is known as?

road rage

aggressive driving

defensive driving

tailgating

26 / 40

What is the stopping distance for a tractor trailer that is traveling at 55 mph on dry pavement?

about 600 feet with is about two football field lengths

about 300 feet which is about a football field length

about 200 feet which is 2/3 of a football field

about 150 feet which is 1/2 of a football field

27 / 40

Unless you_____you will feel the effects of a liquid surge.

make turns carefully and slowly

all answers listed

haul thick liquids

gradually come to a stop

28 / 40

If you are required to stop at railroad crossings, you must:

All of these answers are correct.

Stop 15 to 50 feet before the nearest rail.

Proceed only when you are sure no train is coming.

Remember to never shift gears while crossing tracks.

29 / 40

Select the true statement about tractor protection valve:

it provides the air supply to the brake system

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

it is closed by the parking brakes

all of these answers are correct

30 / 40

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

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

Refueling in a closed building with riders on board.

Talking with riders while driving.

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

31 / 40

Two causes of tire fires are ______.

under-inflated tires and poor retreads

under-inflated tires and duals that touch

hot brakes and under-inflated tires

duals that touch and road debris

32 / 40

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

it controls when air is released from the storage tank

it controls when the brakes will be applied

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

it controls when the warning system is activated

33 / 40

Alcohol evaporators in some air brake systems help to:

decreases the risk of water in the air brake valves in cold weather

cleans out oil from the air lines

it removes fuel from the air lines

decrease the chances of ice in the air brake valves in cold weather

34 / 40

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

tie rod

main spring

hydraulic fluid reservoir

steering knuckle

35 / 40

How do you secure a second trailer to your combination vehicle?

use wheel chocks only

use emergency air brakes, spring brakes, and wheel chocks together

use the emergency air brakes or the trailer's spring brakes only

none of the answers listed

36 / 40

Select the statement that best explains the "crack-the-whip" effect.

it is when you make a sudden movement of the steering wheel or a quick lane change and the rear trailer tends to swing out. The force of the rear trailer becomes amplified, which will cause it to roll over (rearward amplification).

it is when you make a sudden movement of the steering wheel or a quick lane change and the tractor tends to rock and sway. The velocity of the rearmost trailer forces the tractor to roll over before the trailer.

it is when the trailer is half full with the cargo loaded in the rear half of the trailer. When you make a sudden movement of your steering wheel the cargo will forcefully slide towards the back of the trailer which will force the trailer to roll over.

it is when the trailer is half full with the cargo loaded in the front half of the trailer. When you make a sudden movement of your steering wheel the cargo will forcefully slide towards the back of the trailer which will force the trailer to roll over.

37 / 40

If you park the trailer at an angle to the tractor when uncoupling:

you won't have to take as many steps around the vehicle

damage could occur to the landing gear

the process will be faster and easier

you will have more space to maneuver in the lot

38 / 40

On the Hazardous Materials Table, column 1 shows:

What materials can be loaded together.

To what shipping mode the information on that line applies.

How to ship an item.

How much of the material can be put in a vehicle without placarding.

39 / 40

What is a supply pressure gauge used for?

it tells you how much slack is in the slack adjusters

it tells you how much pressure is in the air tanks

it tells you how much pressure is in the air lines

all of these answers are correct

40 / 40

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

maintain pressure on the brake pedal

use stab or controlled braking

use the hand valve

use only the engine brakes

Your score is

The average score is 0%

5/5 - (1 vote)

CDL Category Practice Tests

How To Get an Alaska Commercial Drivers License

Applicants are eligible for their CDL at the age of 18 years old. However, it's important to realize that CDLs issued for individuals under the age of 21 are restricted to intrastate commerce. Only those 21 years of age or older are eligible for interstate commerce. In addition, drivers must be 21 years old to drive a school bus, double or triple trailers, and obtain their Hazmat Certification.

All commercial driver's license applicants must get a physical examination by a FMCSA-Certified Medical Examiner. The examiner will give the applicant a DOT medical card if they are assessed as in good health to be driving a commercial vehicle.Any applicants that have the following are considered disqualified from receiving an Alaska-issued CDL:

Currently disqualified from commercial driving privileges in another state.
Currently have more than one operator's license in Alaska or any other states.
Operator's license is currently suspended, denied, canceled, or revoked.

Endorsements

H – Hazardous Materials
N – Tank Vehicles
P – Passenger
S – School Bus
T – Double/Triple
X – Combination Tank and Hazardous Materials

Hit the Open Road

Alaska CDL License Test Tips

All Alaska CDL applicants must successfully pass a general knowledge test of 50 questions on the topic of commercial driving laws. Those attempting Class A Certification must complete 20 additional questions about driving combination vehicles. Those looking for endorsements or the removal of the Air Brake restriction will be required to take additional knowledge assessments. These assessments range between 20 and 30 questions regarding the specific endorsement topic. All knowledge tests must be passed with a score of 80 percent or better for a resident to be eligible for their commercial driver's license.A skills test is required of all applicants to showcase their ability to operate a commercial vehicle. The skills assessment includes a pre-trip inspection, on-road driving test, and basic control operations test. Those seeking endorsements for Passengers, School Bus, or removal of the Air Brake Restriction will need to utilize the particular vehicle the endorsement is for when performing their skills test. For example, to remove the Air Brake Restriction an individual must take the skills test in a vehicle that is equipped with air brakes.

Additional Information

CDL Testing by the Alaska Division of Motor Vehicles

The Alaska Division of Motor Vehicles administers the certifying and testing of commercial drivers in the state. To get more information contact them via:

Website: https://doa.alaska.gov/dmv/akol/cdl/

Phone: 907.269.5551

Additional Alaska CDL Helpful Links

Please use the links below to access more valuable Alaska CDL testing resources and to learn more about practice driving test resources for the state of Alaska.

Alaska CDL Practice Test

CDL Category Practice Tests

How To Get an Alaska Commercial Drivers License

Hit the Open Road

Alaska CDL License Test Tips

Additional Information

CDL Testing by the Alaska Division of Motor Vehicles

Additional Alaska CDL Helpful Links

Alaska
CDL Practice Test