Truck rear no zone — South Dakota Permit Test

Truck rear no zone 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

Large vehicles have huge blind spots directly behind them that extend up to 200 feet.

If the truck stops hard while you follow close, you cannot see it coming and run into its back.

Unlike cars, large vehicles have huge blind spots directly behind them that extend up to 200 feet.

South Dakota Driver License Manual, p.63

When following a large vehicle, avoid following too closely and position your vehicle so the driver can see it in their side mirrors.

A car tight behind a trailer is hidden from the driver and blind to the road ahead.

Avoid following the vehicle too closely and position your vehicle so the driver can see it in their side mirrors.

South Dakota Driver License Manual, p.63

On steep hills large vehicles drive slowly, about 35 mph, and use the right lane; avoid the right lane on hills and near truck weigh stations.

A car in the right lane on a grade comes up fast on a crawling truck, or meets one pulling out of a weigh station.

When traveling up or down steep hills, large vehicles must drive slowly, approximately 35 mph, and therefore use the right lane.

South Dakota Driver License Manual, p.63

On the test

How far behind a large truck can its rear blind spot reach?

Up to 200 feet. If the truck stops hard while you follow close, you cannot see it coming and run into its back. South Dakota Driver License Manual, p.63: “Unlike cars, large vehicles have huge blind spots directly behind them that extend up to 200 feet.”

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.