Under 21 alcohol offenses — Massachusetts Permit Test
Under 21 alcohol offenses on the Massachusetts permit test — 5 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Massachusetts has a zero-tolerance law: a driver under 21 caught with a blood alcohol content as low as 0.02 loses their license.
One drink can reach 0.02 in an average person. For a driver under 21 that is the whole margin.
If you are under 21 and are caught with a BAC as low as 0.02 while driving, you will lose your license.
Drivers under 21 are twice as likely as other drivers to be involved in alcohol-related crashes.
That is the reason the rules are stricter rather than a moral judgment. The crash figures came first.
Drivers under age 21 are twice as likely as other drivers to be involved in alcohol-related crashes.
A driver under 21 who possesses, carries, or transports alcohol without a parent or guardian loses their license for 90 days to one year.
The suspension runs from three months to a year and the RMV picks where in that range you land. Nobody has to have been drinking for it to apply.
If you are under 21, it is illegal to... • Buy alcohol or have someone buy it for you • Possess, carry, or transport alcohol unless accompanied by a parent or guardian Your license will be suspended for 90 days to one year for breaking either of these laws.
A driver under 21 who buys or tries to buy alcohol has their license suspended for 180 days.
Trying counts the same as succeeding. The attempt is the offense.
If you are under 21 and you buy, or try to buy, alcohol, your license will be suspended for 180 days.
A person under 21 may not possess, carry, or transport alcohol unless accompanied by a parent or guardian.
Carrying it in the trunk for somebody else is still carrying it. The parent in the car is the only exception.
If you are under 21, it is illegal to... • Buy alcohol or have someone buy it for you • Possess, carry, or transport alcohol unless accompanied by a parent or guardian
On the test
What is the lowest blood alcohol content that costs a driver under 21 their license?
0.02 or higher. One drink can reach 0.02 in an average person. For a driver under 21 that is the whole margin. Massachusetts Driver's Manual, p.73: “If you are under 21 and are caught with a BAC as low as 0.02 while driving, you will lose your license.”
How this works
Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.
You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.
Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.
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All Massachusetts permit topics
Where these come from
Every rule here is checked against Massachusetts Driver's Manual, published by the Massachusetts Registry of Motor Vehicles, and against the state code itself. Last checked 2026-09-16.
- src/assets/drivers-manuals/MA.pdf (Massachusetts Driver's Manual, Revised April 2026, Massachusetts Registry of Motor Vehicles, retrieved 2026-09-14 from mass.gov)
- src/assets/drivers-manuals/MA.pages.txt (pdftotext -layout over that PDF; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SOURCES.json (sha256, folio offset 8, folioMarker, nonLawPages, signGalleryPages and the extraction flag, each with its measured basis)