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

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

back and turn towards the driver's side

use the lowest reverse gear

back as slow as possible

back towards the right side

2 / 40

Who is responsible for certifying on the bills of lading that the hazardous materials are prepared properly?

The carrier

The driver

The shipper

The dock workers

3 / 40

Select the factors that can cause your brakes to fade or fail:

not relying on engine braking enough

using the service brakes excessively

the brakes are out of adjustment

all of these answers are correct

4 / 40

When using turn signals, which of the following should be avoided?

signal when you are merging into traffic

signal when you want to change lanes

signal just before you start to make a turn

signal before you exit

5 / 40

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

unloading or loading

driving down a hill

stopping and starting

driving up a hill

6 / 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

7 / 40

Which of the following are some suspension system defects?

all of these answers are correct

broken leaves in leaf spring

cracked or broken spring hangers

leaking shock absorbers

8 / 40

A trailer is at the right height to have the tractor backed up to it when:

the kingpin is about 1 1/5 inches above the fifth wheel

the fifth wheel will not come in contact with the kingpin

it'll raise slightly when the tractor is backed up under it

the top of the kingpin is even with the bottom of the fifth wheel

9 / 40

You should____to check the free play of manual slack adjusters on S-Cam brakes.

after parking on a slight grade, release the parking brake, activate the service brakes and check for vehicle movements

chock the wheels and release the parking brakes after parking on a level ground

apply the parking brake after stopping on level ground

drain off air pressure before adjusting after parking on level ground

10 / 40

When does your vehicle's single brake system need an adjustment?

when the pressure builds from 85 to 100 psi in less than 1 minute

if the pressure builds from 50 to 75 psi in less than 3 minutes

if the compressor cuts out at between 70 and 90 psi

when the governor stops between 75-90 psi

11 / 40

Which of the following must drivers have in their possession while transporting class A or B explosives?

The written route plan.

A gas mask.

The carrier's insurance policy.

None of these answers are correct.

12 / 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

make sure the trailer will not roll away when coupling

none of the answers listed

use a portable generator to supply brake pressure

13 / 40

Why do air brakes take longer to stop than hydraulic brakes?

it takes more time for the air to flow through the lines

the lines are hotter

none of the answers listed

longer reaction time

14 / 40

In the event of an accident you should remember to do the following EXCEPT:

move the victims out of the way immediately

stop any bleeding and keep the victims warm

protect the area

notify authorities

15 / 40

What handling effect will baffles have?

There will be an increase in slow surge.

There will be less side to side surging.

None of the answers listed.

There will be less of surging front to back.

16 / 40

For emergency braking when driving a double trailer and having to use your brakes to avoid a collision is to:

use just the trailer brakes

use stab or controlled braking

apply a firm pressure to the brake pedal and don’t let off

use the engine brake

17 / 40

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

As safe as possible, or the next stop.

The next stop.

Dark and poorly lighted.

Off the regular route.

18 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

go ahead and couple it

have the trailer electric cord to a generator so it can supply braking power

make sure the trailer won't roll when coupling

disconnect the air supply lines after supplying air to the trailer air system via the tractor

19 / 40

All standing riders must stay:

Forward of the rear of the driver's seat.

In front of the standee line.

Behind the standee line.

Within two feet of an emergency exit.

20 / 40

Which of the following answers lists the three types of emergency equipment you must have on your bus?

Fire extinguisher, spare electrical fuses (unless equipped with circuit breakers), and emergency reflectors.

Emergency reflectors, fire extinguisher, signal flares and tire repair kit.

Repair kit, spare electric fuses (unless equipped with circuit breakers), and fire extinguisher.

Hydraulic jack, fire extinguisher, signal flares.

21 / 40

Select the reason as to why you should not use the trailer hand valve while driving.

the trailer brakes will not be evenly applied

it should not be used on dry roads due to road conditions

it releases too much air from the system

it could cause the trailer to skid

22 / 40

Make sure____when the front trailer supports are up and the trailer is sitting on the tractor.

there is enough space for clearance between the nose of the trailer and the tops of the tractor tires

neither of the answers listed

there is enough space for clearance between the landing gear and the tractor frame

both of the answers listed

23 / 40

What is incorrect concerning disruptive passengers?

It may be safer to wait and discharge the disruptive passenger at the next scheduled stop or a well-lighted area where there are other people.

You must ensure the disurptive rider's safety as well as that of others.

You must remove the disruptive passenger immediately for the safety of the others.

Don't discharge such riders where it would be unsafe for them.

24 / 40

Select the true statement about retest markings:

All answers listed.

It shows what type of inspection or test was completed.

Must have a date of the last retest marked.

They must be stamped on the tank.

25 / 40

To transport cargo safely, which of these are you NOT responsible for?

ensuring the freshness of sealed cargo

inspecting the cargo

making sure that cargo is properly secured

recognizing possible overloads

26 / 40

Which of the following statements about stopping distances is NOT true?

brakes, tires, springs and shocks are designed to work best when the truck is empty

empty trucks require greater stopping distances because they have less traction

trucks traveling at higher speeds require greater stopping distances

trucks traveling on ice or snow require greater stopping distances

27 / 40

When transporting hazardous waste, you must:

Sign a uniform hazardous waste manifest.

Have the word "waste" before the name of the material on the bills.

Carry a uniform hazardous waste manifest in the truck.

All of these answers are correct.

28 / 40

Which of the following types of cargo can never be carrier on a bus with riders?

Emergency tear gas.

Emergency drug shipments.

Small arms ammunition (orm-d).

Emergency hospital supplies.

29 / 40

This gauge has a governor cut-off.

The coolant temperature gauge

Air gauge

Oil pressure gauge

The ammeter gauge

30 / 40

How should you inspect a converter dolly?

as if it is cargo

as if it is a trailer

as if it is an axle with a fifth wheel

as if it is an engine

31 / 40

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

Bottom to top

All answers listed

Side to side

Back to front

32 / 40

The gauge that indicates normal or increasing lubrication pressure to prevent engine seizure, failure or breakdown is:

Power steering

Oil pressure

Coolant system

Voltmeter

33 / 40

A tractor should not be backed under a trailer until the whole air system is:

is at half of the maximum pressure

is between 50 and 80 psi

is between 40 and 60 psi

at a normal pressure

34 / 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 15 feet of your vehicle length

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

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

35 / 40

On tandem axle for trailers, the sliding mechanism and locking device is:

Metal frame

Fifth wheel

Tandem release (locking pin/arm)

Air brake system

36 / 40

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

To replace the rear door emergency buzzer.

As a safety feature when the exit door is open.

All of these answers are correct.

To replace the parking brake.

37 / 40

Do converter dollies have spring brakes?

some do

yes

none of the answers listed

38 / 40

In what location must you keep your shipping papers which describe any hazardous materials?

In a locked glove compartment anytime you are outside of the vehicle.

On the driver's seat anytime you are outside of the vehicle.

In a fire-safe pouch under the driver's seat that you can reach while you are driving.

In a fire-safe pouch under the passenger seat while you are driving.

39 / 40

Select the false statement about tractor protection valves.

air is allowed to leak from the tractor line when it is closed

should the trailer air leak, it keeps the air in the tractor

if the air pressure is low it will automatically close

the trailer air supply valve in the cab controls it

40 / 40

What should you hear when you test the trailer brakes by opening the service air line at rear of trailer with the hand valve on?

the emergency air line will release air

you should hear air escape from the open valve

the service brakes will move to a fully applied position

none of the answers listed

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