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It is both a mental and physical distraction.
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A message may be upsetting to the driver.
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People like to read and may become too engaged in their phones.
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South Dakota CDL Permit Test - Double
(From the 2020 South Dakota 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 or four possible answer choices. Test questions come from the South Dakota 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.
Texting while driving is especially dangerous because:
2.
On a slippery road, a driver should:
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Make turns as quickly as possible.
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Refrain from passing slower vehicles.
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Stop quickly.
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3.
One way to avoid becoming an aggressive driver is to:
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Talk on your cell phone while driving.
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Question others' driving abilities.
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Set realistic expectations regarding travel time.
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4.
Which of the following is not a good rule when using turn signals?
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Signal early. Signal well before a turn or lane change.
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Signal continuously. Do not cancel a signal until the turn is completed.
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Don’t over-signal. If no one is near you, there is no need to signal.
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5.
Since doubles and triples should be driven smoothly to prevent rollover, a driver should:
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Drive on the shoulder whenever possible.
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Drive faster than the posted speed limit.
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Look far ahead of their vehicle to react to problems early.
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Add extra grease to connections.
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6.
Of the following, which is not a recommended way to spot potential signs of trouble?
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Watching the gauges
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Using your senses
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Checking critical items only at the beginning and end of a trip
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7.
When should a driver sign a vehicle inspection report?
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After every trip
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If noted defects are repaired
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After each fueling
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