South Dakota: Alcohol and drugs — Part 1 Practice Test
Questions in this part include: “Which of these can cost you your South Dakota driver license?” · “If you have physical control of a vehicle, what is true about your BAC?”
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Questions are original and based on the official manual "South Dakota Driver License Manual" (Revised 11/2024), South Dakota Department of Public Safety.
All 17 questions in this practice test
Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.
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Which of these can cost you your South Dakota driver license?
- Refusing an alcohol or drug test requested by police
- Moving to a new address within the state
- Driving a vehicle that is more than ten years old
- Applying for a duplicate license
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Correct answer: Refusing an alcohol or drug test requested by police
Refusing an alcohol or drug test requested by a police officer is a listed reason for losing a license.
Source: South Dakota Driver License Manual (Revised 11/2024), page 12
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Which of these can cost a minor under 21 the South Dakota driver license?
- Possession of alcohol by a minor under 21
- Riding in a vehicle with an open window
- Passing a vision test with glasses
- Applying for a restricted permit
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Correct answer: Possession of alcohol by a minor under 21
Possession of alcohol by a minor under 21 is a listed reason for losing a license.
Source: South Dakota Driver License Manual (Revised 11/2024), page 12
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Why are new drivers more affected by alcohol than experienced drivers?
- They have smaller bodies than other drivers
- They drink more than other drivers
- They are less likely to be stopped by police
- They are still learning to drive
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Correct answer: They are still learning to drive
New drivers are still learning to drive, so alcohol affects them more.
Source: South Dakota Driver License Manual (Revised 11/2024), page 19
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According to the manual, who can drink alcohol and drive safely?
- Drivers with many years of experience
- No one
- Drivers who have eaten a meal
- Drivers who drink only a little
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Correct answer: No one
The manual says no one can drink alcohol and drive safely, no matter how long they have driven.
Source: South Dakota Driver License Manual (Revised 11/2024), page 19
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What are small amounts of alcohol likely to do?
- Have no effect on a trained driver
- Increase the number of errors dramatically
- Improve a tired driver's alertness on long trips
- Affect only a driver's hearing
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Correct answer: Increase the number of errors dramatically
Even small amounts of alcohol are likely to increase the number of errors dramatically.
Source: South Dakota Driver License Manual (Revised 11/2024), page 19
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Which is a risk for people who drive after drinking alcohol?
- Forfeiture of the vehicle
- A lifetime ban on owning a vehicle
- Mandatory sale of the vehicle
- Higher insurance rates
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Correct answer: Higher insurance rates
Drivers who drink risk heavy fines, higher insurance rates, loss of license, and jail.
Source: South Dakota Driver License Manual (Revised 11/2024), page 19
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If you are under the age of 21, what is illegal with alcoholic beverages?
- To purchase, possess, or drink them
- Only to purchase them
- Only to drink them in a vehicle
- Only to drink them in public
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Correct answer: To purchase, possess, or drink them
Under 21, it is illegal to purchase, possess, or drink alcoholic beverages.
Source: South Dakota Driver License Manual (Revised 11/2024), page 19
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What do "zero tolerance" laws mean for drivers under the age of 21?
- A BAC under 0.08% is allowed
- One drink is allowed with a meal
- No alcohol in the circulatory system
- No alcohol after dark
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Correct answer: No alcohol in the circulatory system
Zero tolerance means no alcohol at all in the circulatory system for drivers under 21.
Source: South Dakota Driver License Manual (Revised 11/2024), page 19
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If you have physical control of a vehicle, what is true about your BAC?
- You can be arrested only while the vehicle is moving
- You can be arrested only if you are actually driving the vehicle on a road
- You can be arrested only if you are on a public highway
- You can be arrested if it is over the legal limit, even if you are not driving
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Correct answer: You can be arrested if it is over the legal limit, even if you are not driving
Physical control of a vehicle is enough: you do not have to be driving to be arrested for being over the limit.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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When do you give your consent for a chemical test to determine your BAC?
- Only when you renew your vehicle registration
- Whenever you drive on a public highway
- Only after you are placed under arrest
- Only when a court orders it
Show answer
Correct answer: Whenever you drive on a public highway
By driving on a public highway you give your consent to a chemical test.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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A BAC of what level or more is evidence that a driver age 21 or older was driving under the influence of alcohol?
- 0.10%
- 0.12%
- 0.08%
- 0.06%
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Correct answer: 0.08%
A BAC of 0.08% or more is evidence of driving under the influence.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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At what BAC can a driver under 21 be arrested for alcohol impairment in South Dakota?
- 0.02%
- 0.04%
- 0.06%
- 0.10%
Show answer
Correct answer: 0.02%
Under 21, a BAC of 0.02% or more is evidence of driving under the influence.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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What does the manual call the most important sense used while driving?
- Vision
- Hearing
- Touch
- Balance
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Correct answer: Vision
The manual calls vision the most important sense used while driving.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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At what BAC does the manual say vision is already impacted for all drivers?
- 0.04%
- 0.02%
- 0.06%
- 0.08%
Show answer
Correct answer: 0.02%
Vision is affected from 0.02% BAC for every driver.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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What does alcohol do to your reaction time?
- Speeds your response to sudden hazards
- Has no effect on it until your BAC reaches 0.08%
- Affects it only on long drives
- Slows your ability to process information and respond
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Correct answer: Slows your ability to process information and respond
Alcohol slows how fast you process information and respond to the driving task.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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When does impairment from alcohol start?
- With the first drink
- After the second drink
- When your BAC reaches 0.08%
- After about one hour of drinking
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Correct answer: With the first drink
The manual says impairment starts with the first drink.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20
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What does the manual say to do if a friend or relative has been drinking?
- Let them drive if they seem fine
- Never let them drive
- Let them drive only on back roads
- Let them drive if they drink coffee first
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Correct answer: Never let them drive
The manual says never to let a friend or relative drive after drinking.
Source: South Dakota Driver License Manual (Revised 11/2024), page 20