Multilane roundabout — South Dakota Permit Test

Multilane roundabout 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

In a roundabout with two or more lanes, decide which lane to use before entering by watching the black and white signs beside the road and the white arrows on the road.

Choosing a lane after you are inside forces you to cut across a car beside you to reach your exit.

As you get closer to the roundabout entrance, it is very important to observe the signs and arrows to determine which lane to use before entering a roundabout.
South Dakota Driver License Manual, p.40

In general, to turn left in a multi-lane roundabout, be in the left lane or another lane signed and marked for left turns.

Turning left from the right lane means crossing in front of the car beside you as it exits.

In general, if you want to make a left turn, you should be in the left lane or other lanes that are signed and marked as left turn lanes.
South Dakota Driver License Manual, p.40

In general, to turn right in a multi-lane roundabout, be in the right lane or another lane signed and marked for right turns.

A right turn from the inside lane cuts off the car in the outside lane at the first exit.

If you want to make a right turn, you should be in the right lane or other lanes that are signed and marked as right turn lanes.
South Dakota Driver License Manual, p.40

On the test

In a multi-lane roundabout, when should you choose your lane?

Before you enter, from the signs and arrows. Choosing a lane after you are inside forces you to cut across a car beside you to reach your exit. South Dakota Driver License Manual, p.40: “As you get closer to the roundabout entrance, it is very important to observe the signs and arrows to determine which lane to use before entering a roundabout.”

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 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.