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Dangerous Driving Behaviors — Maryland Driver's License Practice Test

Dangerous Driving BehaviorsQuestion 1 of 25

25 questions in this topic · 25 drawn at random this round

In Maryland, at what blood alcohol concentration are you considered to be driving under the influence of alcohol?

Maryland Driver's Manual

All questions are based on the official Maryland MVA Driver's Manual. Study the relevant chapter to reinforce your knowledge.

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This Maryland Driver's License Dangerous Driving Behaviors practice set has 25 practice questions based on the official exam materials, each with an instant explanation. You need 88% on the real Maryland Driver's License knowledge test to pass.

Topic overview

This section covers the behaviors that cause the most crashes: driving impaired by alcohol or drugs, aggressive driving, distraction, and drowsiness. Alcohol and drugs impair your ability to drive safely, and Maryland considers you to be driving under the influence at a blood alcohol concentration (BAC) of .08 or higher. Even a much lower BAC can impair your judgment and coordination and lead to criminal charges.

Alcohol rules go beyond the .08 limit. If you are under 21 it is against the law to drink any alcohol, and your license will be suspended or revoked if you are stopped after drinking. It is illegal to have an open container of alcohol in the passenger area, and illegal drugs and even some labeled prescription medications can impair you enough that your license can be suspended or revoked and driving impaired can be a criminal offense.

Distraction, aggressive driving, and fatigue are also emphasized. Distracted driving takes your eyes, hands, or mind off driving and causes more police-reported crashes than anything else; about one-third of fatal crashes involve distracted driving. Using a hand-held cell phone, including texting, is illegal while driving (hands-free is allowed), and drivers under 18 may not use a phone at all except for a 911 emergency call. When tired, the safest choice is to rest or change drivers.

At what BAC does Maryland consider me to be driving under the influence?

Maryland considers you to be driving under the influence at a BAC of .08 or higher. Keep in mind that any amount of alcohol can affect driving, and your judgment and coordination may be impaired at a much lower BAC, which could still result in criminal charges.

Can I use my cell phone while driving in Maryland?

Using a hand-held cell phone, including texting, is illegal while driving, though hands-free use is allowed. If you are under 18, you may not use a cell phone while driving at all, even hands-free, with the only exception being a 911 emergency call.

What counts as an open container of alcohol?

An open container is any open can, bottle, or package, and a six-pack with open, empty, or missing containers can count as one. It is against the law to have one in the passenger area, which includes the driver and passenger seats and any place the driver or passengers can easily reach from where they sit.

Written from the official Maryland Driver's Manual — Dangerous Driving Behaviors ↗· Last checked: 2026-07-10· Reviewed by the PassPrep editorial team· How we verify →

Sample questions

Three questions from the Dangerous Driving Behaviors bank with the correct answer and an explanation. The practice quiz above draws 25 questions at random from the same bank.

How do alcohol and drugs affect your ability to drive?
- They impair it, making safe driving very difficult or impossible — Correct answer
- They have no effect on driving ability
- They improve your reaction time
- They only affect driving after several hours
Explanation: Alcohol and drugs impair your ability to drive, making it very difficult or impossible to drive safely.
Handbook: Dangerous Driving Behaviors — Alcohol, Drugs and Driving
What does blood alcohol concentration (BAC) measure?
- The amount of alcohol in your blood — Correct answer
- The number of drinks you have had
- The speed at which your body absorbs alcohol
- The time since your last drink
Explanation: Blood alcohol concentration (BAC) is a measurement of the amount of alcohol in your blood.
Handbook: Dangerous Driving Behaviors — Blood Alcohol Concentration
In Maryland, at what blood alcohol concentration are you considered to be driving under the influence of alcohol?
- .08 or higher — Correct answer
- .05 or higher
- .10 or higher
- .02 or higher
Explanation: Maryland considers drivers to be driving under the influence of alcohol when their BAC is .08 or higher.
Handbook: Dangerous Driving Behaviors — Blood Alcohol Concentration