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Idaho 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 Idaho Commercial Driver’s License Manual. Questions come from chapters covering: Driving Safely, Transporting Cargo 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.
Always perform the steps of a pre-trip inspection in the same order each time because:
You will be less likely to forget something.
You will have more time to complete the inspection.
It is required by law.
2.
If you are feeling tired and yawning a lot while you are driving, you should:
Pull over and take a nap.
Get some coffee.
Drive faster.
3.
Anti-Lock Braking Systems (ABS):
Are not used on trucks.
Are only used on tucks carrying hazardous materials.
Allow drivers to stay in control when braking.
4.
If there is a cargo fire in a box trailer:
The trailer doors should be opened.
The trailer doors should not be opened.
A large, heavy blanket should be put over the trailer.
5.
To help prevent a rollover, cargo should be:
Placed as high as possible inside a trailer.
Placed as low as possible inside a trailer.
Placed on the driver’s side of a trailer.
6.
When trying to put out an electrical fire, you should:
Use water.
Use a B:C extinguisher.
Use an X extinguisher.
7.
A cracked rim should be:
Repaired by welding.
Relocated to one of a pair of dual tires.
Replaced.
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