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Illinois CDL Permit Test - Double

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 Illinois Commercial Driver’s License Study Guide. 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.
If you are driving and your trailer begins to jackknife, you should not:
Release the brakes.
Allow the trailer to straighten out.
Apply the trailer hand brake.
Allow the wheels to grip the road.
2.
When traveling down a steep downgrade:
The air brakes should be used.
Shift into a lower gear, then use brakes to supplement the braking effect of the engine.
The vehicle should be continually downshifted in the place of using the brakes.
The vehicle should be driven on the shoulder.
3.
In a combination rig, it is best to make:
Quick, sudden stops.
Sharp turns.
Quick accelerations.
Slow, planned stops.
4.
Which of the following is not an example of a driving hazard?
An accident on the roadway
An open road
A police car assisting a motorist on the side of the road
An ice cream truck
5.
A driver should always:
Stay in the right lane.
Have an emergency plan.
Stay in the left lane.
Drive faster than the posted speed limit.
6.
Hydroplaning is like:
Water skiing.
Flying.
Sleeping.
Walking.
7.
A trailer will be most likely to swing around when:
It is full.
Traveling in a straight line.
It is empty.
The wheels are rotating.
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