louisiana
CDL Practice Test

Below are test questions for the Louisiana CDL test. The site is free and you are able to take the practice test as many times as you need to. Questions in these practice tests cover questions from the Louisiana CDL manual and the Louisiana CDL study guide. The Louisiana CDL test contains 50 questions, of which candidates must answer 40 questions correctly to pass. 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 Quiz" button below to begin.

1 / 40

If you have to swerve to avoid a hazard, it's important to:

None of these answers are correct.

Make sure your passengers are wearing seat belts.

Know where other vehicles are around your bus by checking your mirrors.

Warn passengers with a loud and clear voice.

2 / 40

Overhead inside mirror is used to:

see the blind spot immediately behind the bus

monitor traffic that approaches and enters the blind spot area

see all of the students

see the area where students exit the bus

3 / 40

If you work for an interstate carrier:

If there are no defects, no report is necessary.

You must complete a written inspection report for each bus driven.

Only fill out report for buses with defects.

None of these answers are correct.

4 / 40

When driving normally, some drivers use the hand valve before applying the brake pedal to prevent jack knifing. Select the most appropriate response to this statement.

it is the best possible way to brake and maintain the truck in a straight path

should be used with caution and only if you are aware of the dangers

it will result in less skidding than when just using the brake pedal alone

it should not be done

5 / 40

A commercial motor vehicle (CMV) is defined as:

all of these answers are correct

a vehicle with a gross weight over 26,001 lbs

a vehicle transporting 16 or more passengers

a vehicle transporting hazardous materials

6 / 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.

Talking with riders while driving.

Refueling in a closed building with riders on board.

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

7 / 40

Air tanks need to be drained:

air tanks should absolutely never be drained

to keep the tanks cold when not in use

to prevent water and oil from building up in the tank

to keep the tanks warm when not in use

8 / 40

Which of the following statements about bus evacuation is true?

If time allows, notify the dispatcher about evacuation location, conditions, and type of assistance needed.

If time allows, notify the police.

If time allows, walk through the bus and close all windows.

If time allows, backup to the stop before evacuating the bus.

9 / 40

Which of the following is NOT something you need to know in order to determine if you need to use placards?

The amount of a substance or material being shipped.

The substance or material's hazard class.

The manufacturing date for the materials.

The amount of all hazardous materials of all classes in your vehicle.

10 / 40

You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin.

only at the end of a shift

false

only in a level loading dock

true

11 / 40

What is the best way to figure out how many seconds of following distance you have?

wait until a vehicle passes a shadow or landmark, then count the seconds until you pass it

get 1/4 closer to the car in front of you, then back off again multiply how long this took you by 4 for following distance

use the stopwatch on your phone to try to determine how long before you reach a mile marker after the car in front of you appeared to reach it

text a friend and tell them to text you back in ten seconds and see how long that seemed to take compared to how far you traveled

12 / 40

When accelerating:

"hammer down" when your wheels start to spin

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

13 / 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

14 / 40

With most hazardous materials, you may park within 5 feet of the road briefly, if your work requires it. The materials that are the exception and do not allow parking this close to the road are:

Liquids

Acids and poisons

Corrosives and oxidizers

Explosives A and B

15 / 40

Forward and back surge is powerful in this type of tanker.

Waffle

Hard stroke

Smooth bore

Bulktruck

16 / 40

What are spring brakes?

they are powerful springs that are restrained by air pressure when the air pressure is removed, the brakes are applied

they are large springs that are held closed by air pressure if the air pressure is increased the brakes are applied

they are big springs with air pressure in them if the air pressure decreases, the brakes are applied

none of the answers listed

17 / 40

Which of the following statements about overhead space is true?

the heights posted at bridges are usually accurate

the weight of the cargo changes a truck's height

an empty van is lower than a loaded one

warning lights are always installed on low bridges and overpasses

18 / 40

Select the true statement about converter dollies:

they typically require a glad hand converter

they usually do not have spring brakes

all answers listed

because of their small size they have little braking power

19 / 40

Mirrors with a convex surface or "spot" mirrors _____.

make things look farther away and smaller than they actually are

make things look closer and larger than they actually are

they show a larger area than flat mirrors so do not need to be checked as often

are illegal in most states

20 / 40

The emergency air line is used to:

engage the trailer brakes when there is an air pressure loss

provide back up air pressure

to alert emegency services when there is a problem

engage the tractor's front brake when there is air pressure loss

21 / 40

What type fire extinguisher is required in the power unit of a placarded vehicle?

A ul rating of 5 b/c or above.

Any of these are acceptable.

A ul rating of 10 b/c or above.

A ul rating of 15 abc.

22 / 40

A truck with baffles will handle:

With less front to back surge compared to trailers without baffles.

The same as a tanker with no baffles.

Heavier that it actually is.

None of the answers listed.

23 / 40

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

True

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

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

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

24 / 40

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

Remember to never shift gears while crossing tracks.

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.

25 / 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 try to avoid driving next to others when possible

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

26 / 40

Is this statement true or false: You do not need to use the parking brake if are leaving your vehicle for a short amount of time.

only when the vehicle has over 60,000 miles on it

only when the vehicle has over 25,000 miles on it

true

false

27 / 40

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

shift down 2 gears

ride the brakes

accelerate

pump the brakes

28 / 40

What kind of surge can occur in a tank with baffles?

All answers listed

Back to front

Side to side

Bottom to top

29 / 40

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

engine brakes

emergency brakes

all answers listed

hydraulic brakes

30 / 40

A leak rate for a straight truck or bus air brake system should not exceed _____psi per minute when the engine is off and the brakes are released.

31 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

The transport index and the separation distances table.

The table of hazardous materials.

The segregation and separation chart.

The list of hazardous materials and reportable quantities.

32 / 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

you might damage your leaf springs

someone might try to pass you on your right

33 / 40

When driving on a clear night with the vehicle lights on, your speed should be such that you can stop within _____.

the distance you can see ahead of you

the distance you will travel in 10 seconds time

2 times the length of your vehicle

the length of half a football field

34 / 40

When driving in very hot temperatures, you should:

let your tires cool down (remain stopped) if they are too hot to touch

check your tires every 2 hours or every 100 miles

all of these answers are correct

insure that you have enough antifreeze in the system

35 / 40

What is the safest way to stop unruly behavior on 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

have the unruly students move to the front of the bus

36 / 40

To test the tractor-trailer connection for security, you should:

drive forward in a high gear with the trailer brakes on and check it

rock the trailer side to side with the trailer brakes on

drive forward with a sharp jerk

drive forward in a low gear with the trailer brakes locked and then look at it carefully

37 / 40

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

None of these answers are correct.

Both of these answers are correct.

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

There is a traffic light showing green.

38 / 40

What should you do if the low air pressure warning comes on for only one system in a truck or bus that has a dual air brake system?

decrease your speed and head to the closest mechanic

stop and safely park your vehicle only continue once the issue has been resolved

decrease your speed and test the other system

continue on with your trip

39 / 40

Which of the following hazard classes utilizes a transport index in order to determine how much of it can be loaded on a single vehicle for transport?

Class 3—flammable liquids

Class 1—explosives

Class 7—radioactive materials

Class 4—live chickens

40 / 40

The emergency air line is _____and the service air line is____.

yellow, white

red, green

red, blue

white, blue

Your score is

The average score is 0%

5/5 - (3 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A louisiana Commercial Drivers License

Applicants looking to obtain their CDL for interstate driving and any Hazardous Materials Endorsement must be 21 years of age or older. Those who are 18 years of age, but under the age of 21 may apply for an intrastate CDL. These individuals are not able to operate doubles, triples, loaded buses, or HazMat vehicles. All applicants must have a completed Form DPSMV2219 from their medical examiner to apply for their CDL.

There are certain situations in which an individual will automatically be disqualified from receiving their CDL. These are listed below.

Having CDL privileges in another state disqualified.
Being convicted of driving impaired in a commercial vehicles 24 months prior to the application.
Having more than one driver’s license.
Having a denied, canceled, revoked, or suspended driver’s license.

All commercial driver’s license applicants must pass a practical skills CDL test and one or more knowledge tests.

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

Hit the Open Road

louisiana CDL License Test Tips

Each applicant will be required to successfully pass one or more knowledge tests in order to move onto the practical skills test to receive their CDL. A passing score must be received for each test taken and is considered at 80 percent or higher. General knowledge tests are 50 to 70 questions in length and are required when applying for any Louisiana Class CDL. Those looking to have endorsements on their CDL will need to pass one additional knowledge test per endorsement.

Each applicant, regardless of Class, is required to pass a three-part practical skills test. This includes a pre-trip vehicle inspection, basic control skills, and an on-road driving test. This test ensures that the applicant is able to inspect a vehicle for safety, operate the vehicle, and can handle the vehicle with different road situations.

Additional Information

Information on the Louisiana Office of Motor Vehicles (OMV)

The Louisiana Office of Motor Vehicles Public Safety Services regulates CDL requirements in Louisiana. To get more information contact them via:

Website: http://dpsweb.dps.louisiana.gov/

Phone: 888.214.5367

Additional Louisiana CDL Helpful Links

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

louisiana CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A louisiana Commercial Drivers License

Hit the Open Road

louisiana CDL License Test Tips

Additional Information

Information on the Louisiana Office of Motor Vehicles (OMV)

Additional Louisiana CDL Helpful Links

louisiana
CDL Practice Test