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California CDL Permit Test - Double

Number of questions: 15
Passing score: 11
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 15 multiple choice questions. Each question has three answer choices. To pass, the applicant must answer at least 12 questions correctly. Test questions come from the California Commercial Driver Handbook. 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.
A driver who stops at a green light could be:
An impaired driver.
A driver who is color blind.
A person who does not know the rules of the road.
2.
As part of a pre-trip inspection, you should look for all of the following, except:
Tires with too much air pressure.
Tires with too much wear.
Tires made by different manufacturers.
3.
What happens when a vehicle hydroplanes?
The tires lose contact with the road.
The trailer disengages from the tractor.
The vehicle becomes easier to control.
4.
How can you check for a leak in hydraulic brakes?
Pump the brake pedal three times, then hold down the pedal for five seconds. If the pedal moves, there may be a problem.
Push the brake pedal down as far as possible and release. If the brake pedal returns to its normal position, there may be a problem.
Push the brake pedal down as far as possible and release. If the brake squeaks, there may be a problem.
5.
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
25
10
45
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