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Ohio CDL Permit Test - Knowledge Test Class A

(From the 2020 Ohio CDL driver handbook)
Number of questions: 50
Passing score: 40
Directions: This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds. To receive this license, applicants must pass a 50-question test. Test questions come from the Ohio Commercial Drivers License Manual. To pass, applicants must answer 40 questions correctly. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, Doubles/Triples, HazMat, Tank, Air Brakes and School bus.
You have made error so far
Passing grade —
10 or fewer errors
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1.
When backing a truck, you should:
Only use the side mirrors on the driver’s side of the vehicle.
Use both side mirrors.
Not use a helper.
2.
What tells you how much pressure is in your vehicle's air tanks?
The supply pressure gauge
The ABS malfunction lamp
The tractor protection valve
3.
If you realize you may be running late to your destination, you should:
Speed up.
Get upset.
Deal with it and drive at a safe speed.
4.
Which of the following is not a cause of hydraulic brake failure?
Loss of hydraulic pressure
Brake fade on long hills
Downshifting
5.
Regrooved tires:
Should not be used on any vehicle.
Should not be used on the front of a bus.
Should not be used on trucks hauling gravel.
6.
To prevent your vehicle from rolling backward when beginning to move, you can:
Partly engage the clutch before taking your foot off the brake pedal.
Place the vehicle in second gear.
Use the parking brake when stopping.
7.
What should you do if your vehicle gets stuck on railroad tracks?
Stay in the vehicle.
Get out of the vehicle and call for assistance.
Continue trying to get your vehicle off the tracks until you are successful.
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