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

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.

2 / 40

Commerical vehicles typically have this type of brake.

3 / 40

This object should not be damaged, bent, or rusted through and be evenly centered with the tires and dual wheels evenly separated.

4 / 40

What is the purpose of a driver placarding his or her vehicle?

5 / 40

If you are stopped on an incline, how can you start moving without rolling back?

6 / 40

How do you test your service brakes?

7 / 40

Which of the following is not a prohibited practice on the bus:

8 / 40

This object should not be worn dangerously thin where visible.

9 / 40

A truck with baffles will handle:

10 / 40

Some hazardous materials may not be loaded together with other hazardous materials. The prohibited combinations are listed in the:

11 / 40

You should___to reduce the air leakage rate.

12 / 40

What should you check for when inspecting a converter dolly?

13 / 40

Which of the following statements about overhead space is true?

14 / 40

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

15 / 40

What is the purpose of the supply pressure gauge?

16 / 40

When does stab braking occur?

17 / 40

How do you check the connection after locking the kingpin into the fifth wheel?

18 / 40

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

19 / 40

This object should be checked to make sure that the cap(s) are on tight, that it is secure, and there are no leaks.

20 / 40

You are required to have a tank endorsement when transporting:

21 / 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?

22 / 40

How can you check slack adjusters?

23 / 40

To avoid rollover when going through a curve, the best thing to do is:

24 / 40

This item should not be rusted, bent, or damaged and centered over evenly spaced tires and dual wheels.

25 / 40

What will happen should a driver cross the air lines when hooking up the an older trailer?

26 / 40

A driver that hauls hazardous materials must attend training every:

27 / 40

How often should you check the tires on a placarded trailer that has dual tires?

28 / 40

An "A/W" the first column of the hazardous materials table means:

29 / 40

A placard is required for a combustible liquid at?

30 / 40

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

31 / 40

Which of the following materials would be an acceptable floor liner for moving Division 1.1 or 1.2 materials?

32 / 40

What can side to side surge cause?

33 / 40

You should adjust all the outside left and right side flat mirrors to see:

34 / 40

A vehicle placarded for Division 1.1, 1.2, or 1.3 explosives:

35 / 40

When should the trailer hand valve be used?

36 / 40

You downshift automatic transmissions ______.

37 / 40

A driver of a tank vehicle should take curves, off ramps, and on ramps at a speed lower than the posted speed limit.

38 / 40

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

39 / 40

The air leakage rate for a combination vehicle should not exceed ____psi a minute.

40 / 40

The bus driver must accept responsibility for supervising and controlling students while on the bus route. Who is the person in charge?

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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.