oklahoma
CDL Practice Test

Welcome to the Oklahoma CDL practice test site. Use this site as you prepare to take the Oklahoma CDL test. Rules and regulations covered in these practice tests come from the Oklahoma CDL Manual. Take these practice tests as many times as you need to, this site is complimentary to use. 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.

1 / 40

You should___when driving down a long steep hill.

release the brake once the vehicle is traveling 5 mph below the safe speed

use the engine brakes only

repeatedly pump the brake pedal

begin braking once the vehicle is 10 mph above safe speed

2 / 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 silver cyanide is loaded on top of the battery acid.

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

Inform someone and not load the battery acid.

3 / 40

Select the definition for outage:

It is the liquid that must be drained off to meet legal carry limit.

It is the process of liquid expansion as it becomes warm.

It is loss of power to the headlights.

It is how much power is lost to the hydraulics.

4 / 40

How many seats may be placed in the aisle if the bus is a charter and is carrying agricultural (farm) workers?

5 / 40

What is the reason that placards are used?

so hazmat is not mixed with food

communicate the risk

it is the law

to prevent terrorism

6 / 40

To decide which placards you need, if any, what three things do you need to know?

Materials hazard class, percentage of total volume, and amount of all hazardous materials on your vehicle.

Materials hazard class, location being shipped, and amount of all hazardous materials on your vehicle.

Packing group numbers, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

Materials hazard class, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

7 / 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

8 / 40

Play of the steering wheel should not exceed:

5 degrees

15 degrees

10 degrees

30 degrees

9 / 40

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

10 / 40

Select the statement of what you should not do if you are required to drive through flowing water or deep puddles.

drive at a high speed

quickly turn the steering wheel side to side

shift into a lower gear

increase engine rpm

11 / 40

Who is responsible for packaging, labeling, and preparing the hazardous material shipping papers for a common carrier?

The shipper

The carrier

The driver

Your spouse

12 / 40

The shipping papers for hazardous materials can be found:

In a pouch on the driver's door.

In clear view, within reach while driving.

Any of the above locations.

On the driver's seat when out of the vehicle.

13 / 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

14 / 40

The emergency air line is used to:

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

provide back up air pressure

engage the trailer brakes when there is an air pressure loss

to alert emegency services when there is a problem

15 / 40

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

you need to be aware that a tire has failed

hold the steering wheel firmly

engage the brakes hard and immediately

stay off the brake pedal

16 / 40

How often should air tanks be drained?

every 7 days

every 4-5 days

once a day

every 6 hours

17 / 40

Why is understanding the loading and unloading procedures so critical?

Because school district officials have the authority to conduct surprise quizzes and you must know the correct answers to keep your job.

Because many students are killed while getting on and off a school bus each year.

Because motorists ignore students walking to school.

Because only high school students understand how to cross the road.

18 / 40

Before backing under the trailer you should______when coupling a tractor and trailer with air lines already connected.

have the trailer brakes off

supply air to the trailer system and then pull the air supply knob out

press down on the brake pedal twice

all answers listed

19 / 40

Where can you find a shipper’s certification?

On all packages.

On the original shipping paper.

It is a separate document that all hazmat drivers must keep in their vehicles.

There is no such thing.

20 / 40

How do you release the dolly brakes when coupling twin trailers?

by flushing the brake line

by opening the air tank petcock

by opening the shut off valve

by charging the air line

21 / 40

A safe haven is:

A place where it is safe to dump any kind of hazardous materials.

A place to stay once you have reported your company for illegal activity.

The slang term for the last stop at the end of your driving day when carrying hazardous materials.

A place that has been approved to park unattended vehicles carrying explosives.

22 / 40

What placards, if any, do you need if your load includes 20 pounds of Division 2.3 gas and 1,001 pounds of flammable gas?

Poison 23 and flammable gas 21.

Just dangerous placards are required.

Poison 23 and dangerous.

None, you cannot load these materials together.

23 / 40

Why should you cover cargo?

all of these answers are correct

to protect your cargo from bad weather

because many states require it

to protect individuals from any spilled cargo

24 / 40

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

someone might try to pass you on your right

someone might try to pass you on your left

all of these answers are correct

you might damage your leaf springs

25 / 40

The reason a bulk liquid tanker is hard to handle is:

Because the cargo has a high density.

Because of the high friction point.

Because the cargo has a low center of gravity.

Because the cargo has a high center of gravity.

26 / 40

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

6 seconds

4 seconds

5 seconds

3 seconds

27 / 40

The method used to make sure the spring brakes will come on automatically is to:

Apply pressure on and off the brake pedal to decrease the air tank pressure. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

Apply pressure on and off the brake pedal to increase the air tank pressure. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

Apply pressure on and off the brake pedal to decrease the air tank pressure. The parking brake knob should pop out when the air pressure drops to 120 psi.

Apply pressure on and off the brake pedal to decrease the air tank pressure while driving at a high a speed. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

28 / 40

Which of the following statements about loading and unloading cargo tanks is false?

The person in attendance must be authorized and able to move the vehicle.

The person in attendance must be aware of the danger.

The person in attendance must be within 50 ft of the tanker.

The person attending the tanker must have a clear view of it.

29 / 40

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

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

The baffles create odd rocking motions.

The low center of gravity of the load.

The high center of gravity of the load.

30 / 40

You should follow the posted speed limits for curves and be aware of:

All answers listed.

The posted speed limit may be too high for safety.

A rollover may occur even when driving at the posted speed limit.

The higher center of gravity on a tank truck.

31 / 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

Problems with the water pump

A leak from the engine

32 / 40

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

hydraulic fluid reservoir

steering knuckle

tie rod

main spring

33 / 40

What gauge on the dashboard indicates electrical system charging rate?

The power gauge

The ammeter/voltmeter

The air gauge

The coolant pressure gauge

34 / 40

Water is drained from the compressed air tanks because:

the water will over cool the compressor

the water could freeze in cold weather and cause braking failure

to keep the oil in the air compressor clean

braking power is decreased due to the low boiling point of water

35 / 40

The driver's manual advises you to disconnect the steering axle brake to keep the rig straight:

when it is raining

never

in ideal conditions

whever you feel like it

36 / 40

Which of the following is a reason that shippers package material?

Because it is the shipper's responsibility to determine whether or not a material is hazardous.

All of these answers are correct.

Because it is the shipper's responsibilty to choose the correct packaging for a material classified as "hazardous".

Because it is the shipper's responsibility to correctly label the transport vehicle with precautionary placards.

37 / 40

Never refuel your bus:

In a closed building with passengers on board.

With any of the windows open.

Without a static chain.

With a higher grade of fuel.

38 / 40

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

10 seconds

13 seconds

15 seconds

8 seconds

39 / 40

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

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

it controls when the warning system is activated

it controls when the brakes will be applied

it controls when air is released from the storage tank

40 / 40

You are inspecting the_____when looking for broken welds, cracks, holes, or other damage to the longitudinal frame member, cross members, box, and floor.

frame

apron

catwalk

fifth wheel

Your score is

The average score is 0%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A oklahoma Commercial Drivers License

To be eligible for a CDL in Oklahoma, applicants must meet the following age eligibility requirements.

Be at least 18 years old to operate a commercial vehicle intrastate (within Oklahoma only).
Be at least 21 years old to operate a commercial vehicle interstate (outside of Oklahoma).

Oklahoma CDL applicants must be medically certified that they are capable of operating a commercial vehicle and pass a vision test. Applicants are required to submit a Form MCSA-5875 Medical Examination Report and a Form MCSA-5876 Medical Examiner’s Certificate. In addition to submitting these documents, Oklahoma applicants must self-certify their medical records with the Oklahoma Department of Public Safety.

Applicants who have been deemed to be medically fit must keep a copy of the Medical Examiner’s Certificate with them when they operate commercial motor vehicles. Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Oklahoma. Applicants can be disqualified for having multiple licenses.

Oklahoma CDL Endorsements

H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer
X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

oklahoma CDL License Test Tips

All Oklahoma CDL applicants must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the Oklahoma test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The Oklahoma skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must:

Be active duty military personnel.
Have operated a commercial vehicle as part of their military duties for at least 2 years prior to applying for a CDL.
Have been discharged from the military within the past 12 months.
Submit an Application for CDL Skills Test Waiver.

Additional Information

Information on the Oklahoma Department of Public Safety

The Oklahoma Department of Public Safety oversees CDL license requirements in Oklahoma. To get more information contact them via:

Website: https://www.ok.gov/dps/Obtain_an_Oklahoma_Commercial_Driver_License/

Phone: 405.425.2196

Additional Oklahoma CDL Helpful Links

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

oklahoma CDL Practice Test