Headlights visibility — South Dakota Permit Test

Headlights visibility 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

It is your responsibility to make sure your vehicle is visible to other road users; turn on headlights whenever you have trouble seeing others.

If you can barely see other cars, they can barely see you, and they pull out into your path.

Remember to turn on the headlights whenever you have trouble seeing others.
South Dakota Driver License Manual, p.54

A good rule: if you turn on the wipers, turn on the headlights.

In gray rain a car without lights blends into the road and gets hit by someone pulling out.

A good rule to follow is if you turn on the wipers, turn on the headlights.
South Dakota Driver License Manual, p.54

Turn on the headlights when it begins to get dark; turning them on a little early helps other drivers see you.

At dusk a car with no lights fades into the dim road until it is right in front of someone.

Turn on the headlights when it begins to get dark.
South Dakota Driver License Manual, p.54

Parking lights are for parked vehicles only; never drive with only the parking lights on.

Dim parking lights make a moving car look parked or far away, and others pull out in front of it.

Parking lights are for parked vehicles only.
South Dakota Driver License Manual, p.54

When driving away from a rising or setting sun, turn on the headlights so oncoming drivers, facing the glare, can see you.

The oncoming driver squinting into the sun cannot see your car without lights on and turns across you.

When driving away from a rising or setting sun, turn on the headlights.
South Dakota Driver License Manual, p.54

On the test

When should you turn on your headlights to help others see you?

Whenever you have trouble seeing others. If you can barely see other cars, they can barely see you, and they pull out into your path. South Dakota Driver License Manual, p.54: “Remember to turn on the headlights whenever you have trouble seeing others.”

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.