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Ohio CDL Permit Test - Combination

(From the 2020 Ohio CDL driver handbook)
Number of questions: 20
Passing score: 16
Directions: All applicants who are applying for a Class A CDL should be prepared to take the Combination test. This test covers information found in Section 6 of the Ohio Commercial Driver License Manual. Section 6 provides the information needed to safely operate tractor-trailers, doubles, triples, and straight trucks with trailers. The test is made up of 20 multiple-choice questions, and applicants will need to correctly answer a minimum of 16 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
You have made error so far
Passing grade —
4 or fewer errors
In a double or triple combination, the ____ trailer should be directly behind the cab.
During a trip, the ____ should be open.
Rear service line shut-off valve
Rear supply line shut-off valve
Inner shut-off valves
Maintain a following distance of at least ____ for every 10 feet of your vehicle if you are traveling at a speed under 40 mph.
One second
Two seconds
Three seconds
The trailer hand valve should be used:
To test the trailer brakes.
To check the connection between the trailer and tractor.
To accelerate.
Trailers with low underneath clearance can present challenges when driving over:
Railroad tracks.
Operating combination vehicles usually requires ­­­­­____ operating single vehicles.
Less skill than
About the same level of skill as
More skill than
During a trip, landing gear should be:
Completely raised.
Completely lowered.
Skimming the pavement.
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