Alcohol servings and sobering — Rhode Island Permit Test

Alcohol servings and sobering on the Rhode Island permit test — 5 rules, each with the reason behind it and a question on it while it is fresh.

The rules

A 12-ounce beer, a 4-to-5-ounce glass of wine and a 1 to 1 1/2 ounce shot of liquor hold about the same amount of alcohol.

A driver who switches from beer to wine thinking it is weaker drinks just as much alcohol.

A 12-ounce container of beer, a 4-to-5-ounce glass of wine and a 1 to 1 1/2 ounce shot of hard liquor have about the same amount of alcohol per serving.

Rhode Island Driver’s Manual, p.60

Drinking on an empty stomach affects the body faster than drinking after eating.

A driver who skips dinner and has two drinks is hit harder and sooner than he expects.

For example, drinking on an empty stomach will affect the body faster than drinking after eating.

Rhode Island Driver’s Manual, p.60

Alcohol's effects are greater when you are taking medicine or are tired.

A tired driver after a long shift can be badly impaired by one drink.

Alcohol’s effects are greater when you are taking medicine or are tired.

Rhode Island Driver’s Manual, p.60

Only time reduces the effects of alcohol; coffee, food, fresh air or exercise may wake a drunk person up but will not sober them up.

A driver who downs a coffee and heads out is still just as drunk as before.

After drinking, there is nothing that will reduce the effects of alcohol except time.

Rhode Island Driver’s Manual, p.60

The body gets rid of alcohol by breathing, perspiring and oxidation, which is done by the liver.

The liver works at its own pace, so no trick speeds up getting sober.

The three methods by which the body eliminates alcohol: Breathing, Perspiring, and Oxidation (removed by the liver).

Rhode Island Driver’s Manual, p.60

On the test

About how big a glass of wine holds the same alcohol as a 12-ounce beer?

4 to 5 ounces. A driver who switches from beer to wine thinking it is weaker drinks just as much alcohol. Rhode Island Driver’s Manual, p.60: “A 12-ounce container of beer, a 4-to-5-ounce glass of wine and a 1 to 1 1/2 ounce shot of hard liquor have about the same amount of alcohol per serving.”

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.

What it costs

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Where these come from

Every rule here is checked against Rhode Island Driver’s Manual, published by the Rhode Island Division of Motor Vehicles, and against the state code itself. Last checked 2026-10-04.