Truck turning — South Dakota Permit Test

Truck turning on the South Dakota permit test — 5 rules, each with the reason behind it and a question on it while it is fresh.

The rules

A truck or bus making a right turn will sometimes swing wide to the left first; do not get between it and the curb, and do not turn until it has completed its turn.

A car that slips into the gap on the right gets crushed between the trailer and the curb.

When a truck or bus needs to make a right turn, the driver will sometimes swing the vehicle wide to the left to safely turn right and clear the corner of a curb or other obstruction.
South Dakota Driver License Manual, p.63

When you meet a truck coming from the opposite direction, keep as far right as possible to avoid a sideswipe and reduce the wind turbulence that pushes vehicles apart.

The blast of air between two passing vehicles can shove a car off line and into the truck.

When you meet a truck coming from the opposite direction, keep as far as possible to the right side of the roadway to avoid a side-swipe crash and to reduce the wind turbulence between the two vehicles, which pushes the vehicles apart.
South Dakota Driver License Manual, p.63

When in doubt about the speed of an oncoming truck or bus, do not turn left in its path.

A truck is often going faster than it looks and cannot stop quickly for a car turning across it.

When in doubt about the speed of an oncoming truck or bus, do not turn left in its path.
South Dakota Driver License Manual, p.63

Stop lines set you farther back at an intersection to give larger vehicles more turning space.

A car stopped past the line sits where a turning truck's trailer sweeps across.

These stop lines help to set you farther back at an intersection to give larger vehicles more turning space.
South Dakota Driver License Manual, p.63

Do not cut off a large vehicle to reach an exit or turn, or to beat a truck into a single-lane construction zone.

The few seconds saved by cutting in leave a heavy truck no room to stop behind you.

Do not cut off a large vehicle in traffic or on the highway to reach an exit, turn, or to beat a truck into a single-lane construction zone.
South Dakota Driver License Manual, p.63

On the test

A truck ahead swings left before turning right. What should you do?

Wait until it has finished its turn. A car that slips into the gap on the right gets crushed between the trailer and the curb. South Dakota Driver License Manual, p.63: “When a truck or bus needs to make a right turn, the driver will sometimes swing the vehicle wide to the left to safely turn right and clear the corner of a curb or other obstruction.”

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.