ohio
CDL Practice Test

Use this site as you prepare to take the Ohio CDL test. You can work through these practice test questions as you prepare for the Ohio CDL Test. The questions on these practice tests will gauge your knowledge on the various areas that apply to obtain a CDL in Ohio. This site is completely free and you are welcome to take the practice tests as many times as you would like. 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

What do you need to do to supply air to the air tanks of the second trailer?

close the shut off valves at the back of each trailer

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

open the shut off valve at the back of both trailers

none of the answers listed

2 / 40

Class A explosives must not be transported in a combination vehicle if the vehicle includes:

A 200 inch wheelbase trailer.

None of these answers are correct.

Two or more trailers.

A placarded cargo tank.

3 / 40

Which of the following must be closed while the bus is in motion?

Both hatches

Emergency windows

Roof vents

Windows

4 / 40

How many different hazard classes are there?

5 / 40

Which of the following statements about "Radioactive" labels is true?

Yellow iii indicates the highest level of radioactivity.

Yellow ii indicates the highest level of radioactivity.

White i indicates the highest level of radioactivity.

Black iii indicates the highest level of radioactivity.

6 / 40

What is the reason that placards are used?

it is the law

so hazmat is not mixed with food

to prevent terrorism

communicate the risk

7 / 40

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

All of these answers are correct.

To replace the parking brake.

To replace the rear door emergency buzzer.

As a safety feature when the exit door is open.

8 / 40

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

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

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

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

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

9 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

weather

time of day

length and steepness of grade

total weight of the vehicle and cargo

10 / 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 400 feet

At least 300 feet

At least 600 feet

At least 500 feet

11 / 40

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

about 12 degrees to the left of the trailer

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

above 12 degrees to the right of the trailer

directly in front of the trailer

12 / 40

Select the answer that is controlled by the foot brake.

the shut off valves

the service air line

the engine brake

the emergency brake

13 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

look for an escape ramp or an escape route

pump the brake pedal

downshift

put the gears in neutral

14 / 40

Check that the parking brake will hold by____when the parking brake is engaged and the trailer brakes released if not a combination vehicle.

shift up into a high gear and let off the clutch quickly

all answers listed

shifting down to a low gear and trying to pull forward gently

while in neutral increase the rpm to 1500

15 / 40

A battery box check is important. The battery must be secure, connection must be tight, and cell caps must be present. In addition these items should be checked:

Battery connections should not show signs of excessive corrosion, and the battery box and cover or door should not be damaged and should be secure.

Battery connection should show signs of excessive wear.

The fluid level inside the battery.

Battery connections should not show signs of excessive corrosion, but the battery box and cover or door is unimportant.

16 / 40

At what pressure is the safety valve in the air compressor tank set to open?

225 psi

125 psi

150 psi

100 psi

17 / 40

Which trailer is most likely to turn over when you make a sudden turn while pulling doubles?

there is an even chance for either trailer

trailers will never turn over

the front trailer is twice as likely

the rear trailer is twice as likely

18 / 40

Select how brakes work on long, steep downgrades:

it is the main braking mechanism

it's the main braking mechanism with the engine braking system available for emergency situations

it does not do anything

they are a supplement to the braking effect of the engine

19 / 40

In column 1, the "D" symbol means:

Domestic restrictions

Devices

Detonators

Domestic transportation

20 / 40

The gauge that needs to come up to normal levels after starting the engine within a few seconds is _____.

oil pressure

air brake pressure

blood pressure

oil temperature

21 / 40

A baffled tanker has:

Separate compartments inside the trailer.

Balls floating in it to increase the speed of the liquid movement.

No side to side surge.

Bulkheads with holes that allow liquid to flow through it.

22 / 40

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

A gas mask.

None of these answers are correct.

The carrier's insurance policy.

The written route plan.

23 / 40

If you have riders on board, you must never refuel:

At any time.

With any window open.

In a closed building.

Unless on a scenic tour bus.

24 / 40

You should check that the _____are secure, caps are on tight, and is not leaking.

none of the answers listed

coolant system

cb radio

fuel tanks

25 / 40

The blind spot behind the bus could extend to how many feet?

100 feet

300 feet

400 feet

200 feet

26 / 40

What action should you take if there is no phone available and you discover your hazardous materials shipment leaking at a rest stop?

Send someone for help with all the necessary information.

Keep driving, slowly and cautiously, until you reach a phone.

Keep driving for help as quickly as possible.

Leave your truck parked with emergency lights on and walk for help.

27 / 40

Which of the following are some suspension system defects?

leaking shock absorbers

all of these answers are correct

cracked or broken spring hangers

broken leaves in leaf spring

28 / 40

Tires should should be replaced:

all of these answers are correct

if the tread depth on your front tires is less than 4/32 deep

when the tread separates

when there are broken valve stems

29 / 40

You should_____when an emergency requires you to quickly stop your tanker.

keep a firm pressure on the brake pedal

use stab or controlled braking

use the emergency brakes only

turn off the abs and brace for impact

30 / 40

For emergency braking to avoid a crash when driving a double trailer you should:

use the trailer brakes only

none of the answers listed

do stab or controlled braking

slam down the brake pedal and keep pressure on it

31 / 40

Which of the following statements about downshifting is NOT true?

downshift before entering a curve

downshift before climbing a hill

downshift before starting down a hill

downshift when you get to the bottom of a hill

32 / 40

You should_____when checking the slack adjusters on S-Cam brakes.

make sure there is an inch of leeway in each direction for the slack adjuster

pull on the slack adjusters after draining the air from the system

pull on the slack adjuster while the parking brakes are on

pull hard on each slack adjuster while wearing gloves

33 / 40

Select the true statement about emergency brakes:

they are required to be activated the loss of air pressure

all of these answers are correct

they are required to be held on by a mechanical force

they are required on all commercial vehicles

34 / 40

Where are the two main places where the hazardous material identification number appears?

On the package and on paperwork at the shipping point of origin.

On the shipping papers and on a secret document in the driver's wallet.

On the package and on paperwork at the shipping destination.

On the shipping papers and on the package.

35 / 40

Overhead inside mirror is used to:

See the blind spot immediately behind the bus.

See all of the students.

See the area where students exit the bus.

Monitor traffic that approaches and enters the blind spot area.

36 / 40

Why should you not use the trailer hand brake to straighten out a jack knifing trailer?

the trailer wheels caused the skid in the first place once the trailer wheels grip the road again, the trailer will start to follow the tractor and straighten out

the tractor wheels caused the skid in the first place once the trailer wheels grip the road again, the trailer will start to push the tractor and straighten out

this is the only situation in which you should use the hand brake

none of the answers listed

37 / 40

How often should you check the cargo you are transporting?

after every break you take during driving

all of these answers are correct

every 150 miles or every three hours

within the first 50 miles after beginning a trip

38 / 40

When there is a hazardous materials emergency. You should:

Prevent smoking and keep open flames away.

Contact emergency authorities.

All of these answers are correct.

Keep people away and warn them of the danger.

39 / 40

What are you checking when looking at the lubrication level on a dipstick?

The oil level

The horn fluid level

The power steering fluid level

The windshield wiper fluid level

40 / 40

Commerical vehicles typically have this type of brake.

drum brakes

rectangle brakes

S-Cam brakes

stab brakes

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CDL Category Practice Tests

CDL Practice Test

How To Get A ohio Commercial Drivers License

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

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

Ohio CDL applicants must be medically certified that they are medically capable of operating a commercial vehicle and pass a vision test. Ohio applicants must get assistance with completing the forms from a CDL-certified doctor.

Applicants are required to submit the following documents.

Medical Examiner’s Certificate
(Form 649-F) Medical Examination Report for Commercial Driver Fitness Determination

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Ohio. Applicants can be disqualified for having multiple licenses.

Ohio 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

ohio CDL License Test Tips

All Ohio CDL applicants must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the Ohio test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The Ohio 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 active 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.
Operate a commercial vehicle as part of their military duties.
Have been honorably discharged from the military within the past 12 months.
Submit an Application for CDL Skills Test Waiver.

Additional Information

Information on the Ohio Bureau of Motor Vehicles

The Ohio Department of Public Safety Bureau of Motor Vehicles oversees CDL license requirements in Ohio. To get more information contact them via:

Website: https://www.bmv.ohio.gov/dl-cdl-testing.aspx

Phone: 844.644.6268

Additional Ohio CDL Helpful Links

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

ohio CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A ohio Commercial Drivers License

Hit the Open Road

ohio CDL License Test Tips

Additional Information

Information on the Ohio Bureau of Motor Vehicles

Additional Ohio CDL Helpful Links

ohio
CDL Practice Test