If you think the road surface may be becoming icy but you are not certain, you can open your window and feel the front of the side mirror, mirror support, or antenna. If ice has formed on any of these items, the road is likely becoming icy as well.

May open their window and feel the front of the side mirror for ice.

Should look at the road closely.

In an air brake system, the air tanks must be periodically drained to remove accumulations of water and compressor oil. If water is not removed, it could freeze in cold weather and cause brake failure.

Water accumulations freezing and causing brake failure.

Too much air collecting in the tanks.

If you see, hear, smell, or feel anything while driving that does not feel right, you should have it checked out.

Check the situation to determine the proper solution.

Assume it is not a concern and continue driving.

Hope the vehicle does alright until it is switched to another driver.

Check the situation to determine the proper solution.

Hydroplaning occurs on surfaces where water has collected. If there is enough water, vehicles can hydroplane at speeds as low as 30 mph. Hydroplaning becomes more likely if tires are under-inflated or if the tread is worn.

In areas where water collects on the road.

When tires are properly inflated.

When driving at speeds slower than 15 mph.

In areas where water collects on the road.

When backing a truck, always use the mirrors on both sides of the vehicle. Have someone help you whenever possible.

Only use the side mirrors on the driver’s side of the vehicle.

The trailer hand valve (also referred to as the "trolley valve" or "Johnson bar") works the trailer brakes and should be used only when testing them. Using the trailer hand valve while driving could result in a skid.

To check the connection between the trailer and tractor.

Double Triple Test | Ohio 2025 #1

Train for FREE with our Ohio CDL double triple practice test online. 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 CDL double triple 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 may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

Double Triple Test | Ohio 2025 #1

1 . If unable to tell if the road is becoming icy and slippery, a driver:

2 . Failing to drain air tanks could result in:

3 . If an unusual noise or feeling occurs in a vehicle while it is being driven, the driver should:

4 . Hydroplaning usually occurs:

5 . When backing a truck, you should:

6 . The trailer hand valve should be used:

7 . When transporting cargo, drivers must check the securement of the cargo every:

See the exact questions that will be on the 2025 DMV exam.

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