South Dakota DPS Permit Practice Test 23
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. How should your following distance change in heavy rain?
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Answer D: It should be increased well beyond what you use on dry pavement
Wet pavement lengthens stopping distance and rain cuts visibility at the same time, so a larger gap gives you the extra seconds needed to see a problem and stop for it.
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2. On an overhead guide sign, the small exit number panel sits above the left-hand end rather than the right. What does that placement tell you?
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Answer A: The exit leaves from the left side of the roadway
The exit number plaque is placed on the side from which the ramp leaves, which gives advance notice of the unusual left-hand exit.
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3. You need to reverse direction on a busy street. Which choice is usually safest?
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Answer D: Driving around the block and using the intersections instead
Going around the block uses normal turns at controlled intersections instead of stopping across live traffic lanes.
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4. May you park across the entrance to a fire station?
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Answer D: No, an emergency exit must never be blocked
Emergency vehicles must be able to leave the moment a call comes in, so their entrances and exits are kept clear at all hours.
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5. You are turning right where a paved trail crosses the road just past the corner. What should you look for?
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Answer B: Cyclists and walkers arriving from either direction on the trail
A shared use path carries two-way traffic on foot and on bicycles, so scan both directions along the trail before crossing it.
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6. What should you avoid when a hostile driver pulls alongside you?
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Answer A: Making eye contact, or answering the gestures in any way at all
Any response, including a look, encourages an aggressive driver, so give none and let the vehicle go.
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7. You are approaching a traffic light that has been green for a long time. How should you treat it?
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Answer C: Expect it to change and be ready to stop
A light that has been green for a while is called a stale green light. Cover the brake and decide in advance where you could still stop safely.
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8. An ambulance with lights and siren is coming toward you on an undivided two-lane road. What must you do?
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Answer A: Pull to the right edge and stop until it passes
On an undivided road, drivers in both directions clear the way, pulling to the right edge and stopping.
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9. You are crossing a divided highway with a wide median. How should you treat the two roadways?
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Answer D: As two intersections, waiting in the median only when your vehicle fits
Each roadway of a divided highway is a separate intersection, and you should wait in the median only if it is long enough to hold your vehicle clear of both roadways.
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10. You are entering a marked work zone. What should you expect?
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Answer B: A reduced posted speed, narrowed or shifted lanes, and traffic that may stop suddenly
Work zones change the geometry of the road and can bring traffic to a halt without warning, so the posted work zone speed and increased following distance both apply.
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11. You are on an entrance ramp merging onto a freeway. Who has to give way?
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Answer B: You must yield and fit into a gap in the traffic already on the freeway
Traffic entering a highway must yield to traffic already on it. Use the acceleration lane to match speed and merge into a gap.
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12. How much more energy must your brakes absorb if you double your speed?
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Answer D: About four times as much, since energy rises with the square of speed
Kinetic energy grows with the square of speed, so twice the speed means about four times the energy and a far longer braking distance.
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13. You stop at the curb on a busy street to let passengers out. What should you tell them?
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Answer A: To get out on the curb side, away from traffic
Passengers should always leave on the side away from moving traffic, which keeps both them and the door out of the travel lane.
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14. Your vehicle has a backup camera. What is the right way to use it?
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Answer C: Use it as an aid, but still turn and look behind you
A camera has a limited field of view and can be dirty or wet, so it supplements looking over your shoulder and using the mirrors rather than replacing them.
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15. A school crossing guard steps into the roadway and holds up a stop paddle. What must you do?
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Answer D: Stop and stay stopped until the guard and the children have left the road
A crossing guard directs traffic with legal authority; you must remain stopped until both the guard and the children are clear of the roadway.
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16. A person using a wheelchair is waiting to cross at a corner ahead. How should you treat that person?
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Answer B: As a pedestrian with the right of way at the crossing
A wheelchair or a mobility scooter user has the rights of a pedestrian, so yield the whole crossing and wait until the crossing is finished.
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17. A driver hunting for an on-ramp meets this sign at the mouth of the pavement ahead. What is the correct action?
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Answer C: Keep out of that roadway and look for the proper approach elsewhere
The restriction is absolute and does not depend on how much traffic is present, so the driver has to reach the highway by an approach built for entering vehicles.
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18. A mixed drink is made with two shots of spirits. How much alcohol is that?
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Answer C: About two standard drinks
A standard drink is a fixed amount of pure alcohol, so a glass poured with two measures counts as two drinks however it is served.
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19. When should you enter a destination into a navigation device?
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Answer B: Before you start driving, or after parking in a safe place
Programming a route is a visual, manual and mental task at the same time, so it belongs to the moments before the vehicle moves rather than to any point in traffic.
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20. What is South Dakota's minimum light transmittance standard for tint on a windshield or front side windows, including its enforcement tolerance?
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Answer D: 35 percent, with a 9 percent enforcement tolerance
State law sets a 35 percent minimum light transmittance for front windows, with a 9 percent enforcement tolerance built into the standard.
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21. At an intersection where every approach carries this sign, two drivers arrive at exactly the same instant. Which of them goes first?
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Answer C: The driver on the right
Order of arrival decides who goes first, and when two vehicles arrive together the driver on the right proceeds while the other gives way.
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22. A delivery truck is parked in your lane and you must use the oncoming lane to get around it. Who has the right of way?
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Answer D: The oncoming traffic, because their lane is clear
The driver whose own lane is obstructed waits, because using the other lane is a favor from oncoming traffic, not a right.
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23. You are about to pass a large truck on a two-lane highway. Which practice is correct?
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Answer A: Finish the pass without delay and expect wind turbulence beside the truck
Lingering beside a truck keeps you in its blind spot and exposes you to air turbulence. Pass on the left, keep moving, and move back only when you can see the whole truck in your mirror.
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24. A sign showing a walking figure carries a plaque below it with an arrow slanting down to the right. What does the plaque add?
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Answer B: The crossing is at that very spot
A downward-slanting arrow plaque marks the crossing itself, whereas an AHEAD or distance plaque would place it further along the road.
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25. A traffic signal is displaying a flashing red light. How must you treat it?
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Answer D: Stop completely, then proceed when the way is clear
A flashing red carries the same meaning as a stop sign: come to a full stop, then go only when it is safe.