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Montana 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 or four possible answer choices. Test questions come from the Montana 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.
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Passing grade —
4 or fewer errors
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1.
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.
2 psi
4 psi
6 psi
2.
What is sleep debt?
When you fall behind on sleep
When you want to take a nap
Excess sleep
The amount of time it takes to get ready to drive after sleeping
3.
Accelerating roughly is:
Encouraged at slow speeds.
Encouraged at all speeds.
Discouraged, as it may cause damage to the vehicle.
Discouraged, as it may confuse other drivers.
4.
When an engine is started:
The brakes should be locked up.
Warning lights should come on and then quickly turn off.
The coolant temperature will decrease.
The hood must be open.
5.
When driving a bobtail tractor, you should be aware that:
Bobtails stop very easily.
Bobtails cannot drive as fast as tractors with semitrailers.
Bobtails are more difficult to stop than tractors with semitrailers.
Bobtails are illegal in most states.
6.
When parked on the side of the road, you should:
Use only the rear flashing lights.
Use one set of turn signals.
Use your high beam headlights.
Use your four-way flashers.
7.
Before coupling, you can secure a second trailer by:
Depleting its air tanks.
Leaning it against a wall.
Removing its emergency line.
Setting wheel chocks.
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