Prescription and illegal drugs — South Dakota Permit Test

Prescription and illegal drugs on the South Dakota permit test — 3 rules, each with the reason behind it and a question on it while it is fresh.

The rules

Prescription drugs such as antidepressants, pain reducers, sleep aids and sedatives can affect reflexes, judgment, vision and alertness in ways like alcohol.

A sleep aid still working in the morning slows you like a drink and you miss the car braking ahead.

Prescription drugs, such as antidepressants, pain reducers, sleep aids, and sedatives, have an impact on driving safely.
South Dakota Driver License Manual, p.22

Illegal drugs can affect reflexes, judgment, vision and alertness in ways like alcohol.

A high driver reacts late and misjudges gaps the same way a drunk one does.

Illegal drugs can impact driving and can affect reflexes, judgment, vision, and alertness in ways like alcohol.
South Dakota Driver License Manual, p.22

Never drink alcohol while taking other drugs; they could multiply the effects of alcohol or have extra effects of their own.

A pill and a single beer together can knock you out far faster than either one alone.

Never drink alcohol while taking other drugs.
South Dakota Driver License Manual, p.22

On the test

Which prescription drugs does the manual name as affecting safe driving?

Antidepressants, pain reducers, sleep aids. A sleep aid still working in the morning slows you like a drink and you miss the car braking ahead. South Dakota Driver License Manual, p.22: “Prescription drugs, such as antidepressants, pain reducers, sleep aids, and sedatives, have an impact on driving safely.”

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 South Dakota Driver License Manual, published by the South Dakota Department of Public Safety, and against the state code itself. Last checked 2026-10-04.