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Indiana 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. Each question has four possible answer choices. Test questions come from the Indiana Commercial Driver 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.
You have made error so far
Passing grade —
4 or fewer errors
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1.
The best way to notice if a trailer has begun to skid is to:
Ask another driver.
Use your mirrors to determine if the trailer has left the lane.
Look at the skid sensor.
Feel the tractor move.
2.
If the brakes “pull” to one side or the other when you use them, it's a sign that:
The brakes are working properly.
The brakes need to be checked.
The brakes are new.
The brakes have too much stopping power.
3.
If you are being tailgated, you should:
Drive on the shoulder.
Pull off the roadway.
Drive faster.
Allow the vehicle to pass.
4.
Vehicles with dual air brake systems:
Have air pressure in the braking system even when the vehicle is not running.
Maintain some air pressure in the braking system when the vehicle is not running.
Must be run to build air pressure to allow the brakes to operate properly.
Maintain air pressure when shut off for periods of less than four hours.
5.
Roads are most slippery right after it begins to rain because:
The water mixes with oil and grease on the road.
The roads are naturally slippery.
The gravel gets washed to the middle of the lane.
Some tires are not designed for rain.
6.
What is the average driver’s reaction time?
One-sixteenth of a second
One-eighth of a second
Between three-quarters of a second and one second
Two seconds
7.
Which of the following is not a rule for using turn signals?
Signal early.
Signal continuously.
Cancel your signal once your turn or lane change is complete.
Don’t signal unless another vehicle is close.
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