arizona
CDL Practice Test

This site contains free CDL practice tests for Arizona. You can take these practice tests as many times as you would like as you prepare for the Arizona CDL test. Questions are derived from various CDL topics that are represented in the Arizona CDL manual. You will be presented with 40 questions and you must answer 34 test 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 your Arizona CDL practice test.

1 / 40

Puddles or dripping fluids from the underside of the transmission and engine may indicate:

All of these answers are correct

A leaking line or hose

A leak from the engine

Problems with the water pump

2 / 40

The air leakage rate for combination vehicles should not be more than _ psi a minute.

3 / 40

Air tanks need to be drained:

to keep the tanks warm when not in use

to keep the tanks cold when not in use

air tanks should absolutely never be drained

to prevent water and oil from building up in the tank

4 / 40

Select the true statement:

you should always ride the brakes

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

light vehicles require more braking power than heavier vehicles

wait to brake heavy vehicles for as long as you can

5 / 40

Select the statement that is true in regards to managing space to the sides.

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

high gust winds do not cause any issues for triples and doubles

you should try to avoid driving next to others when possible

all answers listed

6 / 40

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

Brake drums

Connector rods

Brake lines/hoses

Slack pieces

7 / 40

Select the true statement about stop valves in a cargo tank:

They are manually operated.

They will close in an emergency.

They protect the piping and tank during rear end collisions.

They will fall off in an emergency.

8 / 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 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 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 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.

9 / 40

Within 3 minutes, this gauge pressure should build to 90 psi from 50 psi.

Coolant pressure gauge

Oil pressure gauge

Voltmeter gauge

Air pressure gauge

10 / 40

Select the true statement about empty trucks:

All answers listed.

They have better traction on wet roads than full tanks.

They can take longer to stop than a truck with a full tank.

They come to a stop faster when you use only the emergency brake.

11 / 40

You should line up_____when getting ready to back under the trailer.

about 12 degrees to the left of the trailer

above 12 degrees to the right of the trailer

directly in front of the trailer

for the kingpin to activate on the driver's side first

12 / 40

You are required to have a tank endorsement when transporting:

Bulk fertilizer

Gas or liquid

Materials that are hazardous

Passengers

13 / 40

When is it best to wear your seat belt?

Only if your bus holds more than 27 people.

Only when you will be driving over 35 mph.

Only if required by company policy.

Always.

14 / 40

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

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

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

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

All of these answers are necessary qualifications.

15 / 40

Select the first action to do when the low air pressure warning comes on:

adjust the engine brake

shift into a higher gear

release the supply control valve

come to a stop and safely park as soon as possible

16 / 40

A shipper’s certification is best described as _____.

a paper certification from the manufacturer given to the shipper

a paper certification given to the manufacturer from the shipper

a test for shippers that certifies that they are qualified to package hazardous materials

a certification that the package has been prepared according to the rules when the shipper packages hazardous materials

17 / 40

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

A deduction of 15 points.

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

None of the answers listed.

An automatic failure of the vehicle inspection test.

18 / 40

The interlock system for the brake and accelerator on a transit coach may be used:

To replace the parking brake.

As a safety feature when the exit door is open.

All of these answers are correct.

To replace the rear door emergency buzzer.

19 / 40

The air leakage rate for a combination vehicle should not exceed ____psi a minute.

20 / 40

You should activate hazard lights within approximately how many feet before railroad crossing?

250 feet

400 feet

200 feet

300 feet

21 / 40

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

it builds up the air pressure in the air tanks

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

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

22 / 40

A driver that hauls hazardous materials must attend training every:

1 year

2 years

3 years

None of these answers are correct

23 / 40

Vehicle handling can become unsafe if the weight is not properly balanced. Hard steering can be caused by:

too little weight on the driving axles

under loaded front axles

too much weight on the steering axles

high center of gravity

24 / 40

What is the best way to prevent brakes form overheating while drive down a steep grade?

drive at a speed of 5 mph below your safe speed

use countersteering practices

use the stab braking method

use the trailer brakes only

25 / 40

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

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

all answers listed

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

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

26 / 40

What is most likely to occur when driving double and a set of trailer wheels goes into a skid?

the trailer will jackknife

the rig will continue straight ahead but will slide sideways

the tractor will continue moving in a straight line no matter how you turn the steering wheel

none of the answers listed

27 / 40

Off-tracking happens when going around a corner and:

the rear wheels follow a different pathway than that of the front wheels

the rear part of the trailer goes into the shoulder

the front part of the trailer pulls to the right

the rear wheels follow the front wheels in a straight path

28 / 40

Cargo tanks ____.

are tanks that the military uses to transport hazardous materials

are large drums used to contain hazmat that is loaded on a trailer

are large drums temporarily attached to a vehicle

are bulk packagings permanently attached to a vehicle

29 / 40

An example of a low pressure warning signal for air brakes is:

all of these answers are correct

a wig wag mechanical arm

red light

a buzzer

30 / 40

When approaching railroad tracks, stop your bus:

Only if you have manual transmission, then proceed with flashers on.

On the tracks so you can see if the train is coming.

5-10 feet before railroad tracks.

15 and 50 feet before railroad crossings.

31 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

supply air to the trailer air system via the tractor and then disconnect the emergency line

use a portable generator to supply brake pressure

none of the answers listed

make sure the trailer will not roll away when coupling

32 / 40

This object should not be worn dangerously thin where visible.

The brake chambers

The air system lines

The brake linings

All answers listed

33 / 40

If students must cross the street, when they get off the bus, which statement is true?

If the bus is equipped with the crossing gate, the danger of running over the child is eliminated.

When the driver signals that it is safe to proceed, the students must run across the street to reduce the exposure to danger.

For crossing, students should make eye contact with the bus driver and wait for the driver's signal that it is safe to proceed.

The student should wait to cross the street until the bus continues on its route.

34 / 40

How far away are you required to park from a bridge, tunnel, or building if you are carrying Division 1.2 or 1.3 materials?

At least 600 feet

At least 400 feet

At least 500 feet

At least 300 feet

35 / 40

Before transporting a sealed load, you must check:

a picture of whatever is inside

a small sample of whatever is inside

that you don't exceed gross weight and axle weight limits

all of these answers are correct

36 / 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

False

True, but only on downgrades

True

37 / 40

Select the true statement about emergency steering and tankers:

None of the answers listed.

It is easier to counter steer than other vehicles.

Do not apply the brakes when making quick movements of the steering wheel.

Have a firm grip on the steering wheel before making quick movements of the steering wheel.

38 / 40

If there is no traffic light or attendant, how far from the draw of a drawbridge must you stop?

5 feet

50 feet

30 feet

100 feet

39 / 40

Select the true statement about handling triples and doubles:

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

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

triples and doubles handle the same as singles

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

40 / 40

When should you not use the parking brakes?

when air pressure is low

while in hot weather

when the brakes are hot

while on a steep hill

Your score is

The average score is 0%

5/5 - (1 vote)

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CDL Practice Test

How To Get An arizona Commercial Drivers License

All Arizona CDL applicants must possess a valid driver’s license and meet the many eligibility requirements listed here. Arizona residents who are 21 years or older may apply for a commercial driver’s license and any specific endorsements offered. Those residents who are between the ages of 18 and 21 can apply for a restricted commercial driver’s license that only offers intrastate driving and limited endorsement availability. All applicants must possess a medical card from a qualified DOT Medical Examiner.

Any applicants that have the following attributes will be disqualified from receiving a CDL:

Being convicted in the past two years of driving a commercial vehicle under the influence.
Having more than one driver’s license.
Having commercial driving privileges revoked in Arizona or any other U.S. State.
Having a suspended or revoked driver’s license.

Those applying for their Arizona-issued commercial driver’s license will be required to take two assessments. These include the knowledge test and the skills test. Depending on the Class and Endorsements that an applicant is seeking, they may be required to partake in more than one knowledge test.

Endorsements

S – School Bus
P – Passengers
T – Doubles and Triples
N – Tanks
H – Hazardous Materials
X – Tanks with Hazmat

Hit the Open Road

arizona CDL License Test Tips

All knowledge tests require a passing score of 80 percent or higher for the applicant to receive their Arizona Commercial Driving Permit. The general knowledge test is comprised of 50 questions regarding commercial vehicles and driving them. Class A drivers will be required to not only complete the general knowledge test, but also a 20 question assessment about combination vehicles. Those seeking endorsements will be required to take a test for each endorsement sought. Hazmat Endorsement requires a 30 question assessment. School Bus Endorsement and the Air Brake Restriction Removal requires a 25 question assessment.

In order to assess an applicant’s ability to operate a commercial vehicle, Arizona testing facilities will require skills tests. These skills tests are comprised of a pre-trip vehicle inspection, on-road driving test, and evaluation of basic control skills. Any applicant that is seeking an endorsement must take the skills test in the type of vehicle the endorsement is intended for.

Additional Information

Information on the Arizona Department of Motor Vehicles

The Arizona DMV regulates the certifying and testing of commercial drivers in the state. To get more information contact them via:

Website: https://www.azdot.gov/motor-vehicles/driver-services/commercial-driver-license

Phone: 602.255.0072

Additional Arizona CDL Helpful Links

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

arizona CDL Practice Test