Under 21 alcohol laws — Tennessee Permit Test

Under 21 alcohol laws on the Tennessee permit test — 7 rules, each with the reason behind it and a question on it while it is fresh.

The rules

A person at least 16 but not yet 21 who is found driving with a BAC of .02 percent will be convicted of underage driving while impaired.

For a young driver there is almost no safe amount. One drink can put you over the line and cost you your license.

A person who is at least 16, but is not yet 21 years old, and who is found: (1) driving with a BAC of .02 percent; (2) under the influence of alcohol; or (3) under the influence of any other intoxicant, will be convicted of underage driving while impaired.

Tennessee Comprehensive Driver License Manual, p.83

An underage driving while impaired conviction brings a fine of $250.

A year without a license at 17 means missed jobs, rides and freedom, all for one drink before driving.

Penalties for this conviction are: losing your license for one year, a fine of $250 and sometimes, includes public service work.

Tennessee Comprehensive Driver License Manual, p.83

If you are 18, 19 or 20 and are convicted of buying, trying to buy or possessing any alcoholic beverage, you lose your privilege to drive for 1 year.

Being caught with a six-pack can take your license even if you were nowhere near a car.

If you are 18, 19 or 20 years old and are convicted of purchasing, attempting to purchase, or possessing any alcoholic beverage, you will lose your privilege to drive for one year.

Tennessee Comprehensive Driver License Manual, p.83

The 18-20 alcohol violation law applies to any alcohol-related conviction, whether or not you were driving or even in a vehicle.

You might think the license is only at risk when you drive. Here, an alcohol charge anywhere can take it.

The law applies to any alcohol-related conviction, whether or not you were driving or even in a vehicle.

Tennessee Comprehensive Driver License Manual, p.83

If you are 13 to 17 and are found to have possessed, consumed or sold alcohol or drugs, your driving privilege is suspended for 1 year or until age 17, whichever is longer.

A 14-year-old caught with alcohol can lose the right to drive before ever getting a license, and wait until 17 to start.

If you are between the ages of 13 and 17 and are found to have possessed, consumed or sold either alcohol or drugs, your driving privilege will be suspended for one year or until age 17, whichever is longer.

Tennessee Comprehensive Driver License Manual, p.83

For a second juvenile alcohol or drug conviction, the suspension is for 2 years or until age 18, whichever is longer.

A second offense as a teen can push your first day of driving back to your 18th birthday.

If you have a second conviction, the suspension is for two years or until age 18, whichever is longer.

Tennessee Comprehensive Driver License Manual, p.83

Young drivers have a much greater chance of a crash at a BAC between .01 and .08 than older drivers, because of low tolerance for alcohol and limited driving experience.

A new driver has less skill to spare and less tolerance for alcohol, so a small amount does more damage.

This is due to low tolerance of alcohol and limited driving experience.

Tennessee Comprehensive Driver License Manual, p.83

On the test

For a driver aged 16 to 20, driving with what BAC leads to an underage driving while impaired conviction?

.02 percent. For a young driver there is almost no safe amount. One drink can put you over the line and cost you your license. Tennessee Comprehensive Driver License Manual, p.83: “A person who is at least 16, but is not yet 21 years old, and who is found: (1) driving with a BAC of .02 percent; (2) under the influence of alcohol; or (3) under the influence of any other intoxicant, will be convicted of underage driving while impaired.”

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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Where these come from

Every rule here is checked against Tennessee Comprehensive Driver License Manual, published by the Tennessee Department of Safety and Homeland Security, and against the state code itself. Last checked 2026-10-03.