Blood alcohol concentration — Delaware Permit Test

Blood alcohol concentration on the Delaware permit test — 4 rules, each with the reason behind it and a question on it while it is fresh.

The rules

How fast alcohol moves into the blood, and how much gets there, depends primarily on how much alcohol is in the drinks; food in the stomach matters less, and how drinks are mixed matters very little.

A driver who thinks switching from shots to beer keeps them sober may drink the same alcohol and be just as drunk.

The rate of this movement and how much alcohol gets into the blood depends primarily on how much alcohol is in the drinks taken.

Delaware Driver Manual, p.50

The lower a drinker's weight, the less alcohol it takes to reach a given BAC: a 100-pound person needs about half as much as a 200-pound person.

A small friend who matches a large friend drink for drink ends up far more impaired.

It takes about half as much for a person weighing 100 pounds as for another weighing 200 pounds.

Delaware Driver Manual, p.50

In Delaware, a BAC of .08 or greater, or the presence of any illicit or recreational drug, is conclusive evidence that a driver is under the influence.

At that level, a driver's reaction time and judgment are too poor to avoid a sudden hazard.

In Delaware a BAC of .08 or greater or the presence of any illicit or recreational drug is conclusive evidence that a driver is under the influence.

Delaware Driver Manual, p.50

In Delaware, a driver can be charged with driving under the influence even if their BAC is under .08.

A driver at .06 who is weaving across the lane is still a danger, whatever the number says.

However, a driver can be charged with driving under the influence if the BAC is under .08.

Delaware Driver Manual, p.50

On the test

What mainly decides how much alcohol gets into your blood?

How much alcohol the drinks held. A driver who thinks switching from shots to beer keeps them sober may drink the same alcohol and be just as drunk. Delaware Driver Manual, p.50: “The rate of this movement and how much alcohol gets into the blood depends primarily on how much alcohol is in the drinks taken.”

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 Delaware Driver Manual, published by the Delaware Division of Motor Vehicles, and against the state code itself. Last checked 2026-10-05.