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Ohio CDL Permit Test - Double

(From the 2020 Ohio CDL driver handbook)
Number of questions: 20
Passing score: 16
Directions: This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Ohio Commercial Driver’s License Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
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Passing grade —
4 or fewer errors
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1.
During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
3 psi in one minute.
6 psi in one minute.
8 psi in one minute.
2.
When applying your brakes, the vehicle should:
Pull to one side.
Squeak.
Not pull to either side.
3.
Of the following, which is the most slippery surface?
Ice that is dry
Ice that is wet
Wet pavement
4.
When you are about to start down a hill, you should switch into a ____ gear.
Higher
Faster
Lower
5.
The air compressor is connected to the:
Transmission.
Engine.
Radiator.
6.
When entering a curve, you should:
Shift into neutral.
Use the shoulder.
Downshift.
7.
If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.
55 and 75 psi.
80 and 95 psi.
65 and 100 psi.
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