Railroad crossings — South Dakota Permit Test
Railroad crossings 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
At crossings with more than one track, the number of tracks may be posted, but not every such crossing has this sign, so check for more than one track and train at every crossing.
A driver who waits for one train to pass and then goes can be hit by a second train on the next track.
Not all highway-railroad grade crossings with more than one train track will have these signs though, so it is important to check for more than one track, train, or railroad vehicle at each highway-railroad grade crossing.
Some crossings have side-by-side lights that flash alternately when a train is approaching; when the lights are flashing, you must stop.
Going on flashing lights because you do not see a train yet puts you in front of a fast train.
When the lights are flashing, you must stop.
At a crossing with a gate that lowers when a train is coming, do not drive around the gate.
Drivers who weave around a lowered gate are among those struck by trains they thought were far off.
Do not drive around the gate.
Some crossings have a bell or horn; do not cross until the bell or horn has stopped.
A bell still ringing means a train is still coming, even if you cannot yet see it.
Do not cross until the bell or horn has stopped.
Not all highway-railroad grade crossings have lights.
A driver who waits for flashing lights at a crossing that has none can roll right into a train.
Not all highway-railroad grade crossings have lights.
On the test
Why check for more than one train at every railroad crossing?
Not every multi-track crossing posts a tracks sign. A driver who waits for one train to pass and then goes can be hit by a second train on the next track. South Dakota Driver License Manual, p.34: “Not all highway-railroad grade crossings with more than one train track will have these signs though, so it is important to check for more than one track, train, or railroad vehicle at each highway-railroad grade crossing.”
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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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)