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Washington 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 three possible answer choices. Test questions come from the Commercial Driver 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.
You have made error so far
Passing grade —
4 or fewer errors
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1.
If an air compressor is belt-driven, the belt should be routinely checked to ensure that it is:
Thin.
Properly tightened.
Cracked.
2.
If feeling drowsy while driving, you should:
Press on and finish the trip.
Drive faster to reach your destination more quickly.
Safely leave the road and take a nap.
3.
When driving on a long downhill slope, you should brake by:
Only using the brakes.
Mostly using the brakes and occasionally downshifting.
Downshifting and then using the brakes.
4.
To avoid a collision with a hazard on the roadway:
You should always try to stop.
Swerving may be a safer option than stopping.
You should never swerve.
5.
As part of the vehicle inspection test, you will be asked to:
Explain why you must check the items you are checking.
Change the coolant.
Replace a headlight.
6.
Keeping cargo low can:
Prevent a rollover.
Help you drive faster.
Make turns more dangerous.
7.
Skids caused by over-acceleration can usually be resolved by:
Removing your foot from the accelerator.
Braking.
Swerving to the right.
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