New Jersey: Alcohol & drugs — Part 1 Practice Test
Questions in this part include: “According to the New Jersey Driver Manual, how may alcohol affect a motorist's thinking?” · “According to the manual's "one drink equals" chart, how much wine (12%) counts as one drink?”
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Questions are original and based on the official manual "New Jersey Driver Manual" (2026), New Jersey Motor Vehicle Commission (MVC).
All 20 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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According to the New Jersey Driver Manual, how may alcohol affect a motorist's thinking?
- It affects thinking only above the legal limit
- It makes them more alert and cautious than when sober
- It may make them overconfident and unable to think clearly
- It sharpens judgment when taken in small amounts
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Correct answer: It may make them overconfident and unable to think clearly
Alcohol is a drug that affects overall driving ability; it may make a motorist overconfident and unable to think clearly.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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A motorist believes they are below the legal limit for intoxication after drinking. According to the manual, which statement is true?
- Alcohol will still affect their driving
- They are safe to drive if they feel alert
- Alcohol will not affect their driving at all
- Only drivers above the limit have a higher crash risk
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Correct answer: Alcohol will still affect their driving
Even if a motorist thinks they are below the level of legal intoxication, alcohol will affect driving, and even a small amount increases the chance of a crash.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the New Jersey Driver Manual, after about how many drinks does alcohol begin to impair reaction time, coordination and balance?
- After ten or more drinks
- After eight or nine drinks
- Only after six or more drinks in an hour
- After two, three or four drinks
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Correct answer: After two, three or four drinks
The manual says that after two, three or four drinks, alcohol begins to impair reaction time, coordination and balance, and also affects vision and distance judgment.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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What is the only thing that can make a person sober after drinking alcohol?
- Black coffee
- Time
- A large meal
- A cold shower
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Correct answer: Time
Only time can make a person sober, because the body removes alcohol slowly; this is why sober-up-quick methods do not work.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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About what share of the alcohol the body detoxifies is oxidized (burned up) by the liver?
- 25 percent
- 75 percent
- 90 percent
- 50 percent
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Correct answer: 90 percent
The majority of the alcohol that is detoxified, about 90 percent, is oxidized (burned up) by the liver.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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The liver burns up most of the alcohol a person drinks. How does the body eliminate the remaining 10 percent?
- Through breath, urine and sweat
- By absorbing it in the stomach
- By neutralizing it with food
- By storing it in body fat until the next day
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Correct answer: Through breath, urine and sweat
About 10 percent of alcohol leaves the body in breath, urine and sweat; the rest is burned up slowly by the liver, which is why sober-up-quick methods do not work.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the manual, studies show that much of the reckless, aggressive driving that causes fatal highway crashes comes from a combination of alcohol and:
- Cell phone use
- Loud music
- Fatigue
- Anger
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Correct answer: Anger
Studies have shown that a combination of alcohol and anger is responsible for much of the reckless, aggressive driving that can cause fatal highway crashes.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the New Jersey Driver Manual, most alcohol-related crashes involve:
- Two vehicles
- Only one vehicle
- A vehicle and a train
- Three or more vehicles
Show answer
Correct answer: Only one vehicle
Most alcohol-related crashes involve only one vehicle, yet they frequently kill or seriously injure many people, including passengers, pedestrians and other motorists.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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About how much alcohol does one standard drink contain?
- About 1/4 ounce
- About 2 ounces
- About 1/2 ounce
- About 1 ounce
Show answer
Correct answer: About 1/2 ounce
Every drink, whether beer, wine or liquor, contains about a half ounce of alcohol.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the manual's "one drink equals" chart, how much beer counts as one drink?
- A 16-ounce pint glass
- A 12-ounce bottle or can
- A 24-ounce bottle or can
- A 6-ounce glass or cup
Show answer
Correct answer: A 12-ounce bottle or can
One drink equals a 12-ounce bottle or can of beer, the same amount of alcohol as a 5-ounce glass of wine or 1.5 ounces of liquor.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the manual's "one drink equals" chart, how much wine (12%) counts as one drink?
- A 5-ounce glass
- A 3-ounce glass
- A 10-ounce glass
- A 12-ounce glass
Show answer
Correct answer: A 5-ounce glass
One drink equals a 5-ounce glass of wine (12%), which contains about the same alcohol as a 12-ounce beer.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the manual's "one drink equals" chart, how much liquor counts as one drink?
- 0.5 ounce
- 3 ounces
- 5 ounces
- 1.5 ounces
Show answer
Correct answer: 1.5 ounces
One drink equals 1.5 ounces of liquor, which has about the same alcohol as a 12-ounce beer or a 5-ounce glass of wine.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the manual, how does drinking alcohol affect a motorist's vision?
- It affects vision and the ability to judge distance
- It affects vision only when driving at night
- It has no effect on vision, only on balance
- It sharpens vision for a short time after one drink
Show answer
Correct answer: It affects vision and the ability to judge distance
After a few drinks, alcohol affects vision and the ability to judge distance, making it more difficult to react and to drive safely.
Source: New Jersey Driver Manual (2026), page 114 · Open this page in the manual (Manual page 114)
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According to the manual, what is the only scientific way to check whether a motorist has had too much to drink?
- Counting the number of drinks
- Blood alcohol concentration (BAC)
- Asking how the motorist feels after drinking
- A walk-and-turn test
Show answer
Correct answer: Blood alcohol concentration (BAC)
The only scientific way to check is through blood alcohol concentration (BAC), which a simple breath test will show.
Source: New Jersey Driver Manual (2026), page 115 · Open this page in the manual (Manual page 115)
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Which of the following is one of the four factors that determine a person's blood alcohol concentration (BAC)?
- The time of day
- The type of alcoholic drink
- Body weight
- Years of driving experience
Show answer
Correct answer: Body weight
BAC is determined by the quantity of alcohol consumed, body weight, how quickly drinks are consumed and food eaten. The type of drink does not matter.
Source: New Jersey Driver Manual (2026), page 115 · Open this page in the manual (Manual page 115)
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According to the manual, what is the best way to reduce the risk of a crash caused by drinking and driving?
- Drive slowly and carefully after drinking
- Wait 30 minutes after your last drink
- Drink only beer before driving
- Do not drive at all after drinking
Show answer
Correct answer: Do not drive at all after drinking
The manual says the best way to reduce the risk of a drinking-and-driving crash is not to drive at all after drinking.
Source: New Jersey Driver Manual (2026), page 115 · Open this page in the manual (Manual page 115)
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Under New Jersey law, what is the blood alcohol concentration (BAC) limit for drivers age 21 or older (driving at or above it is illegal)?
- 0.10 percent
- 0.05 percent
- 0.08 percent
- 0.12 percent
Show answer
Correct answer: 0.08 percent
New Jersey law makes it illegal to drive under the influence of alcohol or drugs, or with a BAC of 0.08 percent or higher.
Source: New Jersey Driver Manual (2026), page 115 · Open this page in the manual (Manual page 115)
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Under New Jersey law, what is the blood alcohol concentration (BAC) limit for drivers younger than 21 (driving at or above it is illegal)?
- 0.05 percent
- 0.08 percent
- 0.02 percent
- 0.01 percent
Show answer
Correct answer: 0.01 percent
For individuals younger than 21, it is illegal to drive with a BAC of 0.01 percent or higher, and violators face severe penalties on top of other DUI/DWI penalties.
Source: New Jersey Driver Manual (2026), page 115 · Open this page in the manual (Manual page 115)
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According to the manual, what happens to the risk of causing a crash when a motorist's BAC reaches slightly above 0.05 percent?
- It becomes 25 times as great
- It doubles
- It becomes six times as great
- It stays about the same
Show answer
Correct answer: It doubles
At a BAC slightly above 0.05 percent, the risk of causing a motor vehicle crash doubles.
Source: New Jersey Driver Manual (2026), page 115 · Open this page in the manual (Manual page 115)
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According to the manual, how much greater is the risk of a crash when driving with a BAC of 0.10 percent?
- Six times as great
- Ten times as great
- Two times as great
- 25 times as great
Show answer
Correct answer: Six times as great
The manual states that the crash risk is six times as great when driving with a BAC of 0.10 percent.
Source: New Jersey Driver Manual (2026), page 115 · Open this page in the manual (Manual page 115)