MD DMV Alcohol and Drug Impairment Laws 2 — Questions and Answers
Question 1: In Maryland, a driver 21 or older is considered driving under the influence (DUI) per se at what blood alcohol concentration?
- 0.08% or higher (Correct answer)
- 0.05% or higher
- 0.10% or higher
- 0.07% or higher
Correct answer: 0.08% or higher
Maryland law sets the per se DUI threshold at a BAC of 0.08% for drivers 21 and older.
Question 2: At what BAC can a Maryland driver be charged with the lesser offense of driving while impaired (DWI)?
- 0.07% (Correct answer)
- 0.02%
- 0.08%
- 0.10%
Correct answer: 0.07%
A BAC of 0.07% creates a presumption of impairment supporting a DWI charge in Maryland.
Question 3: Under Maryland's zero tolerance law, drivers under 21 violate their license restriction with a BAC of:
- 0.02% or higher (Correct answer)
- 0.05% or higher
- 0.08% or higher
- Any amount over 0.00% is always ignored
Correct answer: 0.02% or higher
Drivers under 21 are subject to an alcohol restriction and violate it at a BAC of 0.02% or more.
Question 4: What is the maximum BAC allowed for a driver operating a commercial motor vehicle in Maryland?
- Under 0.04% (Correct answer)
- Under 0.08%
- Under 0.02%
- Under 0.06%
Correct answer: Under 0.04%
Commercial drivers are held to a stricter 0.04% BAC limit while operating a commercial vehicle.
Question 5: By driving on Maryland roads, you automatically agree to take a chemical test for alcohol or drugs if lawfully requested. This is called:
- Implied consent (Correct answer)
- Probable cause
- Due process
- Administrative review
Correct answer: Implied consent
Maryland's implied consent law means all drivers have pre-agreed to chemical testing when detained on suspicion of impaired driving.
Question 6: Which ability is typically affected FIRST when a person drinks alcohol?
- Judgment (Correct answer)
- Muscle coordination
- Speech
- Balance
Correct answer: Judgment
Alcohol impairs judgment and self-control before it visibly affects physical skills.
Question 7: What is the only thing that effectively removes alcohol from your body?
- Time (Correct answer)
- Black coffee
- A cold shower
- Fresh air and exercise
Correct answer: Time
The liver metabolizes alcohol at a fixed rate, so only time reduces BAC.
MD DMV Alcohol and Drug Impairment Laws 2
In Maryland, a driver 21 or older is considered driving under the influence (DUI) per se at what blood alcohol concentration?