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Colorado 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 Colorado 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.
Which of the following is not an indication of damaged brakes?
Cracked drums
Shoes with oil or grease on them
Shoes worn thinly
Pads free of oil or grease
2.
If an approaching driver is using their high beam headlights, you should:
Look directly at the headlights.
Flash your high beam lights to remind the driver to switch to their low beams.
Look to the right side of your lane until the vehicle has passed.
Pull to the side of the road until the vehicle has passed.
3.
Starting in which year were newly manufactured trailers required to have ABS?
1972
1987
1998
2004
4.
An Anti-Lock Braking System (ABS):
Allows wheels to lock up.
Prevents wheels from locking up.
Makes it easier to turn a large vehicle.
Assists with the operation of brake lights.
5.
If driving a vehicle with a manual transmission, you can prevent your vehicle from rolling backward when starting from a stop by:
Partly engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in reverse before moving forward.
Fully engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in neutral before moving forward.
6.
Hydraulic brakes can fail for one of two reasons. Which of the following is one of those reasons?
There is a loss of hydraulic pressure.
You are driving uphill.
The brakes get too cold.
The brakes are used too much in one day.
7.
Proper coupling technique:
Is the same on all vehicles.
Is essential to the safe operation of a vehicle.
Includes ensuring that the fifth wheel plate is not greased.
Can be learned over time.
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