|
Gradually build up pressure over the span of a few minutes.
|
|
|
Come up to normal within a few seconds.
|
|
|
Start high, then decrease as the engine is run.
|
Virginia CDL Permit Test - Double
(From the 2020 Virginia CDL driver handbook)
| 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 Virginia 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.
Passing grade —
4 or fewer errors
advertising
1.
When starting a vehicle, the oil pressure should:
2.
How does doubling your speed from 20 mph to 40 mph affect your vehicle's braking distance?
|
It stays about the same.
|
|
|
It doubles.
|
|
|
It quadruples.
|
3.
One way to prevent fatigue on long trips is to:
|
Take frequent breaks.
|
|
|
Text while driving.
|
|
|
Drink caffeine.
|
4.
Which of the following will not help prevent a rig from rolling over?
|
Keeping the cargo as close to the ground as possible
|
|
|
Driving slowly around turns
|
|
|
Driving on the shoulder of a road
|
5.
The best way to recognize that your trailer has started to skid is by:
|
Seeing other drivers' faces.
|
|
|
Checking the trailer in your mirrors.
|
|
|
Feeling the trailer move.
|
6.
When backing a truck, you should:
|
Only use the side mirrors on the driver’s side.
|
|
|
Use both side mirrors.
|
|
|
Never use a helper.
|
7.
If a tire fails, you should:
|
Use the brakes.
|
|
|
Stay off the brakes.
|
|
|
Swerve.
|
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