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

Select the true statement in regards to your brake function when your ABS fails

the abs will need to be repaired but the brakes will function normally

you will have no control over your truck as the brakes will not be functioning

you will need to pull over immediately

there is a huge fire risk

2 / 40

Your engine runs a pump when you are delivering compressed gas. Should you turn off your engine before or after you unhook the hoses after finishing that delivery?

Leave it on the entire time.

Turn it off before unhooking.

Turn if off after unhooking.

Turn it off on arrival—use other power to run the pump.

3 / 40

What keeps air in the tanks should the air compressor develop a leak?

the engine protection valve

the one-way check vavle

the air compressor

the tractor relay valve

4 / 40

A baffled tanker has:

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

Separate compartments inside the trailer.

No side to side surge.

Bulkheads with holes that allow liquid to flow through it.

5 / 40

What is the normal operating range for a truck's oil pressure?

This is engine-specific

20-30 psi

30-75 psi

40-60 psi

6 / 40

The longest crack that brake or disc drums can have is:

1/2 inch across in a straight line.

Cracks are not permitted.

None of the answers listed.

1/2 the width of the friction area.

7 / 40

When should air tanks be drained?

they don't need to be drained

every 7 days

at every restroom break stop

at the end of each working day

8 / 40

What is the first thing to do if your vehicle catches fire while driving?

pull off the road and park in an open area

find a service station to pull into

open the door and jump out of the vehicle

open the hood and let the flames die down

9 / 40

If you must stop on the shoulder of the road, you should place warning devices at all of the following places except...

on the other side of a divided highway

within 10 feet of the front or rear corners

about 100 feet behind your vehicle

about 100 feet in front of your vehicle

10 / 40

What is a technical name?

The name for a hazardous material most commonly used on the street.

The name for a hazardous material used in scientific journals and texts, recognized as its chemical and microbiological name.

The name for a hazardous material most commonly used in the trucking community, accepted as standard.

The medical term for hazardous materials used by medical personnel.

11 / 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 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 while driving at a high a speed. 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 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.

12 / 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

when the governor stops between 75-90 psi

if the compressor cuts out at between 70 and 90 psi

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

13 / 40

You should____when an emergency requires you to quickly stop due to a crash.

use stab or controlled braking

maintain pressure on the brake pedal

use only the engine brakes

use the hand valve

14 / 40

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

it builds up the air pressure in the air tanks

brakes may fail or fade from excessive heat due to relying on them too much and not using the engine brake effect

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

it helps control your speed better

15 / 40

How often should air tanks be drained?

every 4-5 days

every 7 days

every 6 hours

once a day

16 / 40

After deciding the type of evacuation that is necessary, the next step you must take is:

Opening the emergency exits.

Securing the bus.

Dangle the radio microphone out of the driver window for later use.

Notifying the dispatch office of the evacuation.

17 / 40

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

Fifth wheel

Tandem release (locking pin/arm)

Air brake system

Metal frame

18 / 40

Select the statement that describes how you could damage the landing gear.

have the trailer kingpin centered over the fifth wheel

back under the trailer at an angle

have the tractor and trailer aligned

back under the trailer in a straight path

19 / 40

The manual says you should look _____ ahead while driving.

15 to 20 seconds, at highway speeds, about a half of a mile

9 to 12 seconds, at highway speeds, about a quarter of a mile

5 to 8 seconds, at highway speeds, about an eighth of a mile

12 to 15 seconds, at highway speeds, about a quarter of a mile

20 / 40

Students exit the bus and walk:

At least 8 feet away from the side of the bus.

Across the street.

The distance it takes to clear the danger zone.

At least 10 feet away from the side of the bus.

21 / 40

Which seats not securely fastened to the bus are usually allowed?

None of these answers are correct.

Window seats.

The driver's seat only.

Any of the last row seats.

22 / 40

If your bus has an emergency exit door, it must:

Not have any signs, stickers, or markings anywhere near it.

All of these answers are correct.

Have a red electric door light turned on at all times.

Be closed when operating the bus.

23 / 40

Which of the following statements about special danger of loading and unloading is true?

Students should be told to remain seated while the bus is in motion.

Students should be told to pick up any dropped objects as long as it is not under the bus.

Students should be told to leave any dropped objects and move to the point of safety out of danger and get the driver's attention to retrieve the object.

Students should be told not to use the handrails when exiting the bus due to the possibility of causing a clothing hang up.

24 / 40

How high should you crank the landing gear?

so that you can clear railroad tracks

as high up as it will go

for it to be 6 inches above the ground

until the crank handle is loose

25 / 40

What is the service air line controlled by?

all answers listed

the relay vavle by sending air pressure from the trailer air tank to the trailer brake chambers

the relay valve that connects the trailer air tanks to the trailer air brakes

the pressure applied to the trailer hand brake or by the foot brake

26 / 40

What are some things you should check on the front of your vehicle when doing the walk-around inspection?

windshield, wipers, mirrors, hood latches

oil, transmission, air compressor, radiator

tires, steering parts, suspension parts, headlights

low beams, high beams, four way flashers, turn signals

27 / 40

What are the dividers that are inside tankers that have an opening at the bottom and top?

Bulkmets

Taffles

Baffles

Layers

28 / 40

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

pump the brake pedal

look for an escape ramp or an escape route

put the gears in neutral

downshift

29 / 40

In what position should the converter dolly air tank drain valves and pintle hook be in?

closed and latched

open and latched

closed and open

open and open

30 / 40

Which of the following is NOT an important reason to look far ahead when you are driving?

look for vehicles coming into your lane

determine if there are any upcoming traffic lights that might require you to stop

look for brake lights from slowing vehicles

determine if there are any hills coming up

31 / 40

Be careful to check the_____when unloading the smaller tanks of bulk heads.

percentage of alcohol

percentage of water

weight distribution

the fuel to air ratio

32 / 40

Select the statement that is not part of the air-brake system:

clutch brake system

parking brake system

emergency brake system

service brake system

33 / 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.

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.

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

34 / 40

You should back up slowly until____when coupling the trailer.

the rear wheels are visible in the mirror

the tractor comes in contact with the front of the trailer

the cargo inside the trailer shifts

the fifth wheel has just touched the trailer

35 / 40

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

at half of its normal pressure

at a level of 50 and 70 psi

at a level of 70 and 90 psi

at a normal pressure

36 / 40

The most stable tanker shape is:

Elliptical

Round

Cylindrical

Square

37 / 40

Select the true statement in regards to unhooking the pintle hook while the converter dolly is still under the trailer.

this is not recommended as it could could cause damage to the pintle hook

this is recommended because it keeps the trailer from tipping over

this is not recommended because it may result in injury

this is recommended as it is standard procedure

38 / 40

The main reason you should pull the dolly out from under a trailer before disconnecting it from the trailer in front is:

removing the dolly before uncoupling is not the correct procedure

to provide additional lateral stabilization to the front trailer

so the rear-trailer's air brake system will stay charged and keep the trailer wheels locked to prevent rolling

it is possible that the dolly tow bar could fly up making it difficult to re-couple

39 / 40

When inspecting your bus, you must make sure that:

All of these answers are correct.

Emergency exit handles are secure.

Rider signaling devices are working.

Every handhold and railing is secure.

40 / 40

How do you know when your brakes are fading?

to control your speed on a downgrade you have to push harder on the brake pedal

your speed increases when pressure is removed from the brake pedal

to control your speed on a downgrade you have to apply less pressure to the break pedal

the brake pedal flops to the cabin floor

Your score is

The average score is 0%

5/5 - (1 vote)

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