Warning sign pictures — South Dakota Permit Test
Warning sign pictures on the South Dakota permit test — 15 rules, each with the reason behind it and a question on it while it is fresh.
The rules
This warning sign means a cross road is ahead.
A car can shoot out of the side road into your path before you can stop.
Cross Road Ahead Side Road Ahead T-Intersection Y-Intersection Curvy Road
This warning sign means the road curves to the right ahead.
Taking a curve too fast can carry you off the outside of the road and into the ditch.
Right Curve Divided Highway Divided Highway Lane Ends Merging Traffic
This warning sign means a divided highway is ahead.
A driver who misses this may turn onto the wrong side of a split road and face oncoming cars.
Right Curve Divided Highway Divided Highway Lane Ends Merging Traffic
This warning sign means a lane ends ahead.
A driver who misses this sign runs out of lane and squeezes into the car beside.
Right Curve Divided Highway Divided Highway Lane Ends Merging Traffic
This warning sign means merging traffic is ahead.
Cars joining from the side may move into your lane if you are not ready for them.
Right Curve Divided Highway Divided Highway Lane Ends Merging Traffic
This warning sign means a traffic signal is ahead.
Coming over a rise into a stopped line at a light you did not expect leads to a hard stop or a crash.
Added Lane Traffic Signal Stop Sign Ahead Sharp Curve Advisory Speed Around Curve
This warning sign means a stop sign is ahead.
A stop sign hidden past a curve can catch a driver going far too fast to halt in time.
Added Lane Traffic Signal Stop Sign Ahead Sharp Curve Advisory Speed Around Curve
This sign gives an advisory speed, often posted with a curve warning.
A curve taken well above its advised speed can roll a car or send it off the road.
Deer/Animal Crossing Steep Hill Roundabout Low Clearance Ahead Advisory Speed Plate
This sign means a school crossing.
Children cross here, and a small child can step out from between parked cars.
School Crossing Pedestrian Crossing Share the Road with Bicycles Bicycle Crossing Slippery When Wet
This warning sign means a pedestrian crossing.
People on foot may step into the road here, and a walker has nothing to protect them.
School Crossing Pedestrian Crossing Share the Road with Bicycles Bicycle Crossing Slippery When Wet
This warning sign means a bicycle crossing.
A rider crossing the road is easy to miss and has no protection in a crash.
School Crossing Pedestrian Crossing Share the Road with Bicycles Bicycle Crossing Slippery When Wet
This warning sign means the road is slippery when wet.
On a slick road a car stops slowly and can slide if you brake or steer hard.
School Crossing Pedestrian Crossing Share the Road with Bicycles Bicycle Crossing Slippery When Wet
This warning sign means deer or other animals may cross.
A deer leaping into the road at night can come straight through the windshield.
Deer/Animal Crossing Steep Hill Roundabout Low Clearance Ahead Advisory Speed Plate
This warning sign means a steep hill is ahead.
Going down a steep grade too fast can overheat the brakes and leave you unable to stop.
Deer/Animal Crossing Steep Hill Roundabout Low Clearance Ahead Advisory Speed Plate
This warning sign means a roundabout is ahead.
A driver who meets a roundabout without warning may enter it too fast or the wrong way.
Deer/Animal Crossing Steep Hill Roundabout Low Clearance Ahead Advisory Speed Plate
On the test
What does this sign tell you is ahead?
A road that crosses yours. A car can shoot out of the side road into your path before you can stop. South Dakota Driver License Manual, p.33: “Cross Road Ahead Side Road Ahead T-Intersection Y-Intersection Curvy Road”
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
- One payment, once — not a subscription. Nothing renews and there is nothing to cancel, for an exam you sit one time.
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- Do the work, fail the real exam, and we refund you.
All South Dakota permit topics
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.
- src/assets/drivers-manuals/SD.pdf (South Dakota Driver License Manual, Revised 11/2024, South Dakota Department of Public Safety, retrieved 2026-09-14 and re-checked 2026-10-04; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SD.pages.txt (pdftotext -layout, the fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/SD-exam.html (South Dakota Department of Public Safety, South Dakota Driver License Testing Information, KB0043731, read 2026-10-04; states the 80% rate; sha256 pinned under examSource)
- https://www.sd.gov/dps?id=cs_kb_article_view&sysparm_article=KB0043733 (read 2026-10-04; links the manual)