Wisconsin Alcohol & Drugs practice test

Key Wisconsin facts: Alcohol & Drugs

• For drivers under 21 the legal alcohol concentration is 0.00 percent. Section 9.A Alcohol, Drugs and Driving, p. 49
• A person with three or more prior counted offenses, or under an interlock order, has a prohibited alcohol concentration above 0.02. Wis. Stat. § 340.01(46m)(c)
• Any amount of a controlled substance counts the same as operating impaired. Section 9.A Alcohol, Drugs and Driving, p. 49
• A label warning against operating heavy machinery covers motor vehicles too. Section 9.A Alcohol, Drugs and Driving, p. 49
• PAC stands for prohibited alcohol concentration. Section 9.A Alcohol, Drugs and Driving, p. 49

Sample Alcohol & Drugs questions

How long at minimum do you lose your driving privileges for refusing a PAC test?

• One year
• Six months
• 30 days
• 90 days

Show the answer

One year

You lose them for at least one year, and other consequences can follow.

Source: Wisconsin Motorists' Handbook 2026, Section 9.A Alcohol, Drugs and Driving, p. 49

What is the legal alcohol concentration for Wisconsin drivers under 21?

• 0.02 percent
• 0.08 percent
• 0.00 percent
• 0.05 percent

Show the answer

0.00 percent

Drivers under 21 may not have any alcohol in their system while driving.

Source: Wisconsin Motorists' Handbook 2026, Section 9.A Alcohol, Drugs and Driving, p. 49

What alcohol concentration is prohibited for a Wisconsin driver with three or more prior counted offenses?

• Above 0.02
• Above 0.05
• Above 0.08
• Above 0.10

Show the answer

Above 0.02

State law uses a much lower threshold for these drivers than the usual 0.08.

Source: Wisconsin Statutes, ch. 340, Wis. Stat. § 340.01(46m)(c)

How much of a controlled substance in your system counts the same as driving impaired?

• Only with alcohol too
• Any amount
• Twice the medical dose
• Only a large amount

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Any amount

The handbook treats any amount the same as operating impaired.

Source: Wisconsin Motorists' Handbook 2026, Section 9.A Alcohol, Drugs and Driving, p. 49

You refuse a PAC test requested by a police officer. What must the officer do?

• Arrest you
• Drive you home
• Give you a warning
• Ask you again tomorrow

Show the answer

Arrest you

Refusing means arrest for violating the Implied Consent Law.

Source: Wisconsin Motorists' Handbook 2026, Section 9.A Alcohol, Drugs and Driving, p. 49

What have studies found about people who use marijuana and drive?

• They drive better at night
• They make more driving mistakes
• They see no change at all
• They stop faster than others

Show the answer

They make more driving mistakes

Marijuana is linked to more mistakes behind the wheel.

Source: Wisconsin Motorists' Handbook 2026, Section 9.A Alcohol, Drugs and Driving, p. 49

In Wisconsin's implied consent rules, what does PAC stand for?

• Probationary alcohol card
• Personal alcohol certificate
• Police arrest code
• Prohibited alcohol concentration

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Prohibited alcohol concentration

A PAC test uses a breathalyzer or blood test to look for a measurable amount of alcohol.

Source: Wisconsin Motorists' Handbook 2026, Section 9.A Alcohol, Drugs and Driving, p. 49

A medicine label warns against operating heavy machinery. What does that mean for driving?

• It has no effect on cars
• It covers only farm equipment
• It covers motor vehicles too
• It covers only commercial trucks

Show the answer

It covers motor vehicles too

A car counts as this kind of machinery, so check the label before driving.

Source: Wisconsin Motorists' Handbook 2026, Section 9.A Alcohol, Drugs and Driving, p. 49

What do alcohol and drugs make it hard for a driver to figure out?

• Radio stations and seat positions
• The names of nearby streets only
• The color of signs and signals only
• Distances, speed and other vehicles' movement

Show the answer

Distances, speed and other vehicles' movement

These substances change how you think and decide, including how you read traffic around you.

Source: Wisconsin Motorists' Handbook 2026, Section 9, p. 49

At what blood alcohol level does driving become illegal for someone aged 21 or older?

• 0.20 percent
• 0.08 percent
• 0.15 percent

Show the answer

0.08 percent

It is against the law for an adult to drive at 0.08 percent or above.

Source: California Driver's Handbook, Section 9, Alcohol and Drugs; Texas Driver Handbook, Chapter 10, Texas Alcohol-Related Laws for Adults, p. 58; Official Florida Driver License Handbook, s. 316.193, Florida Statutes; New York State Driver's Manual, Chapter 9, Alcohol and Other Drugs; Illinois Rules of the Road, Chapter 6, Driving Under the Influence: BAC (p. 48); Pennsylvania Driver's Manual (PUB 95), Chapter 4, Pennsylvania's Point System: What Constitutes a DUI; Ohio Driver Manual, Digest of Motor Vehicle Laws, Ohio Revised Code 4511.19; Georgia Drivers' Manual, Section 5: Traffic Laws, Driving Under the Influence; North Carolina Driver Handbook, Chapter 2, Alcohol and the Law: Driving While Impaired (pp. 31-32); What Every Driver Must Know (SOS-133), MCL 257.625; New Jersey Driver Manual, Chapter 6, How Much is Too Much, p. 115; Virginia Driver's Manual (DMV 39), Section 3, Safe Driving: Drunk and Drugged Driving (pp. 24-25); Washington Driver Guide, Chapter 1, 1.15 Driving under the influence (DUI): Blood Alcohol Concentration; Maryland Driver's Manual, Section 6.A, p. 33; Missouri Driver Guide, Chapter 10, Alcohol, PDF p. 73; Wisconsin Statutes, ch. 340, Wis. Stat. § 340.01(46m)(a); Arizona Driver License Manual and Customer Service Guide, Section 5, Actively Avoiding Crashes: DUI Penalties (p. 65); Tennessee Comprehensive Driver License Manual, Section B, Chapter 7, What Is Blood Alcohol Concentration (BAC)? (p. 79); Minnesota Driver's Manual, Chapter 8, Minnesota Driving While Impaired (DWI) law, p. 93; Alabama Driver Manual, Chapter 4, The Driver, Drinking and Driving, PDF p. 35; Louisiana Class D & E Driver's Guide, Chapter 9, Driving Offenses, Blood Alcohol Concentration, PDF p. 128; Kentucky Driver Manual, Section Three, Alcohol and the Law, PDF p. 34; South Carolina Code of Laws, Title 56, Chapter 5, § 56-5-2933(A); Colorado Driver Handbook (DR 2337), Driving Under the Influence; Table 1, printed pp. 3-4 (PDF pp. 6-7); Oregon Driver Manual 2026-2027, Safe & Responsible Driving, Impaired Driving, pp. 82-83 (PDF pp. 90-91); Oklahoma Driver Manual, Chapter 12, Alcohol, Drugs and Driving, Oklahoma Implied Consent Laws and Penalties for DUI, p. 65; Connecticut General Statutes § 14-227a, Subsection (a), elevated blood alcohol content (2026 Supplement); Utah Driver Handbook, Section 10, C. Alcohol and the Law, PDF p. 62; Iowa Driver's License Manual (MM1170), Chapter 3, 3.8 Alcohol and Drugs, Operating While Intoxicated, p. 37; Arkansas Driver License Study Guide (Vol. 1, Ed. 10, October 2026), Chapter 8, Driving Fitness, Alcohol and the Law, PDF p. 86; MDPS Driver's License Manual, How much is too much?, PDF p. 78; 21 Del. C. § 4177, 21 Del. C. § 4177(a)(4); Montana Code Annotated 2025, Title 61, § 61-8-1002, MCA (driving under influence); R.I. Gen. Laws § 31-27-2, R.I. Gen. Laws § 31-27-2(b)(1); South Dakota Driver License Manual (revised 11/2024), Be in Shape to Drive, Alcohol and the Law, PDF p. 20; D.C. Official Code § 50, D.C. Official Code § 50-2206.01(9)(A); RSA 265-A:2, RSA 265-A:2, paragraph I(b); 23 V.S.A. § 1201, 23 V.S.A. § 1201(a)(1)(A); Wyoming Statutes Title 31, W.S. 31-5-233(b)(i), W.S. 31-5-233(b)(i); AS 28.35.030, Alaska Statutes AS 28.35.030

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About these questions

We wrote these practice questions from the facts in the Wisconsin Motorists' Handbook (2026 (BDS126), PDF created 2026-07-03, read 2026-11-08. Page numbers cited are the handbook's printed ones (PDF page = printed page + 4). Where the handbook gives no value, Wisconsin Statutes chs. 340, 343, 346 and 347 (docs.legis.wisconsin.gov, published 2026-11-04) are the source. edition) and from official sources on road signs. Every answer links to its source, so you can check it and read more.

DMV Decoded is an independent guide, not a government agency. This practice test is not connected to the Wisconsin Department of Transportation, Division of Motor Vehicles (DMV), and your actual test will have different questions. Study the handbook, and check the agency's website for current rules.