South Dakota Permit Practice Test 1
This free South Dakota practice test has 30 multiple-choice questions covering road signs, right-of-way, speed limits, and safe driving — the same topics the DPS tests. You need 80% correct to pass the real DPS Knowledge Test.
Question 1 of 30
1. Children are playing near the curb on an unposted neighborhood street in South Dakota. Unless a sign says otherwise, the fastest you may legally drive here is which speed?
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Correct answer: A. The default residential limit in South Dakota is 25 mph unless otherwise posted. With children nearby, you should often go slower still, because stopping distance grows quickly with speed and kids can dart into the street without warning.
2. What does South Dakota law say about phone use while you are driving on an instruction permit?
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Correct answer: A. South Dakota bars instruction permit holders from using any wireless communication device on public roads, including phones, texting devices, and laptops. New drivers need full attention on the road, so the rule leaves no hands-free loophole.
3. A passenger claims some South Dakota highways have unlimited speed like the German autobahn. In reality, the state's highest legal limit is which of these?
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Correct answer: D. Every road in South Dakota has a limit, and the statewide ceiling is 80 mph on designated highways. Higher speeds multiply crash energy dramatically, so no US state allows unlimited speed. Follow whatever limit is actually posted.
4. The light is steady green as you reach an intersection. Which statement is true?
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Correct answer: B. A green light means you may proceed, but only after yielding to pedestrians and vehicles still clearing the intersection. Green grants permission, not protection, so look left, right, and left again before you enter.
5. How does the alcohol in a regular beer compare with a standard glass of wine or a single shot of liquor?
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Correct answer: B. A standard beer, glass of wine, and shot of liquor each deliver about the same alcohol, so switching drinks does not protect you. Your body counts drinks, not drink types. One is one, whatever the glass looks like.
6. A 17-year-old in South Dakota claims, 'I only need to stay under the adult limit.' Under zero tolerance, the BAC that actually applies to under-21 drivers is what?
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Correct answer: C. The adult limit is irrelevant for minors. South Dakota's zero-tolerance law applies at 0.02% for drivers under 21, because any alcohol raises a new driver's crash risk. If you are under 21, drinking and driving simply never mix.
7. You fail the knowledge test at a South Dakota driver exam station. When is the soonest you may try again?
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Correct answer: C. South Dakota makes you wait until the next working day to retest, and one fee paid covers three testing opportunities within six months. The pause exists so you restudy the manual instead of guessing your way through again.
8. You are lawfully arrested for impaired driving and refuse the chemical test. What should you expect?
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Correct answer: C. Refusing the test triggers its own penalty: license suspension under implied-consent laws, separate from any court case. Refusal does not make the problem disappear. Remember, saying no to the test means saying goodbye to your license.
9. You are in the right lane when you see a yellow diamond sign showing the right lane narrowing into the left lane. What should you do?
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Correct answer: B. A lane-ends sign warns your lane will disappear, so signal, match the other lane's speed, and merge before the pavement runs out. Drivers in the ending lane must yield to through traffic. Early, smooth merges prevent the last-second squeeze.
10. Your right wheels drop off the pavement onto a soft shoulder. What should you do?
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Correct answer: B. If your wheels leave the pavement, do not yank the wheel; ease off the gas, slow down, and steer back gently once traffic allows. A sudden jerk against the pavement lip can flip or launch the car.
11. BAC measures the percentage of alcohol in a person's blood. For drivers 21 and older in South Dakota, what BAC puts them at or over the legal limit?
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Correct answer: C. BAC stands for blood alcohol concentration. In South Dakota, adult drivers reach the illegal level at 0.08%. Remember the rule as a hard line: at 0.08% you are over, and skills like reaction time fade even sooner.
12. An officer stops an adult driver in South Dakota and a breath test is given. At what BAC reading can that driver be charged with driving under the influence, even if their driving looked steady?
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Correct answer: C. A BAC of 0.08% or more is enough by itself for a DUI charge in South Dakota. The law uses a fixed number because alcohol impairs everyone, and drivers are poor judges of their own impairment behind the wheel.
13. How long must a South Dakota teen hold an instruction permit before upgrading if they have not completed an approved driver education course?
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Correct answer: C. Without driver education, South Dakota requires 275 days on the instruction permit; finishing an approved course cuts the wait to 180 days. More supervised time builds skill, so the state rewards formal training with a shorter hold.
14. You hold a South Dakota restricted minor's permit. Which trip may you legally make alone after 10 p.m.?
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Correct answer: D. South Dakota lets restricted permit holders drive alone after 10 p.m. only on the most direct route to or from school, church, work, or farm duties. Social trips are not covered, so plan late travel around those four exceptions.
15. You see a red-and-white triangular sign reading YIELD as you approach a traffic circle. What should you do?
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Correct answer: B. A yield sign tells you to slow down, check for traffic with the right-of-way, and stop only when necessary to let it pass. It keeps merges smooth without forcing pointless stops. Think of yield as give way, not always stop.
16. Why is texting on a handheld phone one of the most dangerous things a driver can do?
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Correct answer: A. Texting combines all three types of distraction at once: visual, manual, and cognitive, since your eyes, hands, and thoughts all leave the road together. A driver who is not looking, holding, or thinking is barely driving at all.
17. Under zero-tolerance laws, what happens to a driver under 21 caught with any measurable alcohol in their system?
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Correct answer: A. Every state enforces zero tolerance: drivers under 21 face penalties, typically license loss, for any measurable amount of alcohol. Because underage drinking is illegal, no level is acceptable. For young drivers, the only safe number is zero.
18. Signs on South Dakota highways vary from road to road, but the law sets one absolute top limit for the fastest routes. That limit is which value?
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Correct answer: D. By statute, 80 mph is the fastest any South Dakota road can be posted. Below that ceiling, engineers set each road's limit for its design and traffic, which is why the posted sign on your road always governs.
19. Your brake pedal sinks to the floor and the car barely slows. What should you do?
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Correct answer: A. Pump the pedal quickly to build pressure back, shift to a lower gear, and ease on the parking brake while steering toward safety. Work through the list calmly: pump, downshift, parking brake, and pick your escape path.
20. How does the law treat a driver who leaves the scene of a crash they were involved in?
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Correct answer: B. Fleeing a crash you were part of, often called hit and run, is a serious crime everywhere, with penalties that grow if anyone was hurt. Staying is a legal duty. Whatever the damage, driving away doubles the trouble.
21. A school bus ahead stops with its red lights flashing on a two-lane road with no median. Which vehicles must stop?
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Correct answer: D. On a road without a dividing median, traffic in both directions must stop for a school bus with flashing red lights and remain stopped until the lights turn off. Children may cross from either side, so every lane freezes.
22. Small green signs with numbers appear every mile along the edge of the highway. What are these mile markers mainly used for?
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Correct answer: C. Mile markers count the distance across a route, letting you track your progress, judge how far your exit is, and give an exact location when you call for help. Note the nearest marker whenever trouble starts.
23. A person with a white cane is about to cross the street ahead of you. What must you do?
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Correct answer: A. A white cane or guide dog marks a pedestrian who is blind, and that person has the right-of-way every time. Stop if needed and never honk, which can confuse them. White cane means your brakes, not your horn.
24. When do reduced school zone speed limits typically apply?
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Correct answer: D. School zone limits usually apply during posted times, when the zone's beacons flash, or whenever children are present. Kids are small, quick, and unpredictable near schools. When you see the zone active, drop your speed and cover the brake.
25. It is late at night and the unposted residential streets in your South Dakota neighborhood are empty. The legal maximum for these streets remains which speed?
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Correct answer: C. Empty or busy, day or night, the default limit on unposted residential streets in South Dakota stays 25 mph. Darkness actually cuts how far you can see and react, so conditions may call for less, never more, than the limit.
26. You must park on a hill where the road has no curb. Which way should you turn your wheels?
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Correct answer: A. With no curb to catch the car, always turn your wheels toward the road's edge, uphill or downhill. A runaway car then rolls off the travel lanes instead of into traffic. No curb: aim for the shoulder.
27. One sign shape is so important that it is reserved for a single message: STOP. Which shape is it?
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Correct answer: B. The eight-sided octagon belongs to the stop sign alone, so you can recognize a stop even when the face is snow-covered or faded. Count eight sides, prepare to stop. No other sign may borrow this shape.
28. Graduated driver licensing (GDL) in South Dakota moves teens through permit, intermediate, and full-license stages. Entry into the first stage, the learner's permit, begins at what age?
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Correct answer: A. GDL entry in South Dakota starts with a learner's permit at 14. Each stage lifts restrictions as skill grows, because crash risk is highest in a driver's first solo months. The ladder starts at 14; climb it patiently.
29. You approach an intersection with no signs or signals, and another vehicle approaches from a cross street at about the same time. Who should yield?
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Correct answer: A. At an uncontrolled intersection, slow down and yield to any vehicle that reaches it at about the same time from your right. Without signs, this default rule sorts out conflicts. Same tiebreaker as a four-way stop: right goes first.
30. A yellow diamond sign shows a small red stop sign symbol with an upward arrow. What should you do when you see it?
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Correct answer: C. A stop-ahead warning is used where the actual stop sign is hidden by a curve, hill, or trees. Start braking as soon as you see it, since the real stop will appear with little warning.
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