Combination Vehicles Practice Test | Ohio 2025 #1

Train for FREE online with our Ohio CDL combination vehicle test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a OH combination license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a combination license may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . The best way to recognize that your trailer has started to skid is by:

Seeing other drivers' faces.

Checking the trailer in your mirrors.

Feeling the trailer move.

The easiest way to become aware that your trailer has begun to jackknife is to observe it in your mirrors. Checking your trailer in your mirrors will also allow you to spot any skidding at the earliest possible moment.

2 . If you cannot reverse your trailer in a straight path, you should:

Swerve back and forth while backing.

Back toward the driver's side.

Back toward the passenger's side.

If you need to back your trailer but cannot back up in a straight path, you should back on a curved path toward the driver's side of the vehicle. This will allow you the best possible visibility while backing.

3 . In an empty combination vehicle, the stiff suspension springs and strong brakes will have:

High traction.

Low traction.

No traction.

An empty combination vehicle will come to a complete stop more slowly than a fully-loaded vehicle. With less weight in a trailer, the stiff suspension springs and strong brakes will have lower traction than they would if the vehicle carried more weight.

4 . If a trailer begins to jackknife, the driver:

Should not apply the trailer hand brake.

Should firmly apply the brakes.

Can straighten the trailer with the parking brake.

If a trailer begins to jackknife, you should release the brakes and allow the trailer wheels to regain traction with the road. Do not apply the trailer hand brake to attempt to straighten out the rig because the application of brakes is what caused the wheels to lock in the first place.

5 . Place the trailer air supply control in its "emergency" position to test:

The trailer emergency brakes.

A coupling device.

The anti-lock brakes.

Be sure to test the trailer emergency brakes before beginning a trip. After ensuring that the trailer rolls freely, you can test the emergency brakes by pulling out the trailer air supply control, or placing it in the "emergency" position. Pull forward slightly with the tractor and make sure the trailer does not move.

6 . All trailers made after ____ must be equipped with Anti-Lock Braking Systems (ABS).

1943

1998

2009

All trailers and converter dollies manufactured on or after March 1, 1998 must have Anti-Lock Braking Systems (ABS).

7 . What is a bobtail tractor?

A tractor without a semi-trailer

A tractor with two semi-trailers

A tractor that travels faster than the speed limit

Tractors without semi-trailers are referred to as "bobtail tractors." Bobtail tractors are difficult to operate and drivers must exercise caution.

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2025 Ohio | Frequently Asked Questions

To secure a CDL Bus endorsement in Ohio, you must first have a valid Ohio CDL. Then, pass the Passenger Endorsement Knowledge Test and the School Bus Endorsement Knowledge Test. You also need to complete a School Bus Driver Physical Examination every two years. Lastly, undergo a Federal Background Check and submit your fingerprints for an FBI criminal records check.

Obtaining a CDL Bus license involves several steps. You must first have a valid driver's license, pass the CDL General Knowledge Test, and obtain a Commercial Learner's Permit (CLP). After holding the CLP for 14 days, you can take the CDL Road Skills Test. Passing this allows you to get a CDL. Finally, pass the Passenger and School Bus Endorsement Tests to get your Bus license.

Yes, specific training is necessary for a CDL Bus endorsement in Ohio. You must pass a written passenger endorsement test and get hands-on experience driving a bus under supervision. Additionally, you must pass a skills test in a bus similar to the one you'll be driving. Training programs are available at many community colleges and vocational schools.

CDL Bus licenses fall under Class B or Class C. Class B is for vehicles designed to transport 24 passengers or more, including the driver. This includes school buses, city buses, and tour buses. Class C is for vehicles designed to carry 16 to 23 passengers, including the driver. This includes smaller school buses, shuttle buses, or church vans.

No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle you use for the test should match the class of CDL you are trying to obtain. For instance, if you're applying for a bus endorsement, you must take the test in a bus. This ensures you can handle the type of vehicle you will be driving professionally.

The CDL Bus driving test evaluates skills such as pre-trip vehicle inspection, basic vehicle control, and on-road driving. You may be required to show ability to parallel park, make right and left turns, merge to traffic, navigate through intersections and railroad crossings, and properly load/unload passengers. The test also checks your knowledge of safety procedures and emergency situations.

Yes, in Ohio, in addition to passing the written and skills tests, you must also pass a Department of Transportation (DOT) physical examination. This ensures that you are physically qualified to operate a commercial vehicle. The exam assesses your vision, hearing, blood pressure, and medical history. You'll receive a DOT medical card if you pass, which is a requirement for the CDL Bus endorsement.

No, it's not permissible to transport passengers without a valid CDL Bus endorsement. In Ohio, as in other states, driving a commercial vehicle like a bus without the appropriate endorsement is illegal and can result in fines, penalties, or suspension of your CDL. The bus endorsement ensures that drivers are adequately trained to transport passengers safely.

In Ohio, you can add a CDL Bus endorsement to your existing license. You don't need to apply for a new license. However, you must pass a written passenger vehicle test and a skills test in the type of vehicle you will be driving. Once you pass these tests, the endorsement will be added to your existing CDL.

Yes, there are restrictions. Drivers with a CDL Bus endorsement must comply with all federal and state regulations, including maintaining a logbook of hours, taking required rest periods, passing regular vehicle inspections, and complying with drug and alcohol testing rules. Additionally, they must not exceed the passenger capacity of their vehicle as it can lead to serious safety issues.