Alcohol and drugs — Virginia Permit Test
Alcohol and drugs on the Virginia permit test — 14 rules, each with the reason behind it and a question on it while it is fresh.
The rules
A driver aged 21 or older is legally under the influence when their blood alcohol content is 0.08 percent or higher.
Alcohol reaches vision, judgment and coordination before a person feels drunk, so the number exists where the feeling does not.
A driver under 21 can be convicted of illegal consumption of alcohol with a blood alcohol content of at least 0.02 but less than 0.08 percent.
Virginia has a zero tolerance law for drivers under 21, so the level that would be legal at 21 is an offense before it.
A driver can be convicted of driving under the influence with a blood alcohol content below 0.08 percent if their driving is impaired.
The number is a line above which impairment is assumed, not a line below which everyone is safe to drive.
Under implied consent laws, operating a motor vehicle on Virginia’s public roads means you agree to take a breath test when an officer requests one.
Refusing carries its own suspension, so the test is not a choice the way it feels like one at the roadside.
If you refuse a breath test or your blood alcohol content is 0.08 percent or higher, your driving privilege is automatically suspended for seven days on a first offense.
The suspension starts at the roadside rather than at trial, so the driver is off the road before a court has heard anything.
Your chances of being in a crash are seven times greater if you drive after drinking than if you drive sober.
Alcohol works on judgment first, so the driver who has been drinking is the one least able to tell that they should not drive.
Only time can reduce intoxication. Coffee, a cold shower and exercise will not sober you up.
The body clears alcohol at its own pace, and everything else only changes how awake a drunk driver feels.
Twelve ounces of beer contains the same alcohol as a shot of liquor or a five-ounce glass of wine.
Counting drinks only works if a drink means the same thing each time, and people who switch between them lose count.
Driving while impaired by any drug can carry the same penalties as driving under the influence of alcohol.
The law is about whether you can drive, not about which substance took the ability away.
Although possessing marijuana is legal over the age of 21, driving under the influence of marijuana is still illegal.
Being legal to have and legal to drive on are different questions, and the second one is about whether you can still react.
Many over-the-counter and prescription drugs for headaches, colds, allergies or nerves can cause drowsiness and slow your reaction time.
A cold remedy taken at breakfast is still working at lunchtime, and nothing on the box makes that feel like impairment.
Combining alcohol with another drug usually multiplies the effects of both. One drink taken on top of another drug can affect your driving like several drinks.
The two do not add up, they multiply, which is why a person who has had one drink can be badly impaired.
A driver under 21 convicted of driving after illegally consuming alcohol loses their driving privilege for one year and faces a minimum mandatory fine of $500 or at least 50 hours of community service.
The penalty is set to cost a year of independence, which is the thing a young driver actually values.
For the open container rule, the passenger area means the area that seats the driver and passengers, and any area within the driver’s reach, including an unlocked glove compartment.
A bottle in an unlocked glove box is still within reach of the driver, so putting it in there does not put it away.
On the test
At what blood alcohol content is a driver 21 or older legally under the influence?
0.08 percent or higher. Alcohol reaches vision, judgment and coordination before a person feels drunk, so the number exists where the feeling does not.
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.
Where these come from
Every rule here is checked against Virginia Driver’s Manual, published by the Virginia Department of Motor Vehicles, and against the state code itself. Last checked 2026-09-02.
- https://www.dmv.virginia.gov/licenses-ids/exams/know-exam
- https://www.dmv.virginia.gov/sites/default/files/forms/dmv39.pdf
- https://www.dmv.virginia.gov/sites/default/files/documents/dmv39i.pdf
- https://www.dmv.virginia.gov/licenses-ids/learners/apply
- https://www.dmv.virginia.gov/licenses-ids/learners/restrictions
- https://law.lis.virginia.gov/vacode/title46.2/section46.2-870/
- https://law.lis.virginia.gov/vacode/title46.2/section46.2-873/
- https://law.lis.virginia.gov/vacode/title46.2/section46.2-874/
- https://law.lis.virginia.gov/vacode/title46.2/section46.2-862/