South Dakota DPS Permit Practice Test 38
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. You are leaving a freeway at an exit that has a deceleration lane. Where should you slow down?
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Answer C: After you have moved fully into the exit lane
Braking in a through lane surprises the traffic behind you, so you move into the exit lane at highway speed and then slow down inside it.
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2. The center line beside your lane is a broken yellow line. What does it allow?
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Answer D: You may cross into the opposing lane to pass when it is safe and clear
A broken yellow center line marks a passing zone where traffic in that direction may cross into the opposing lane to pass when the way ahead is clear.
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3. Compared with dry pavement, how much room does a vehicle need to stop on packed snow?
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Answer D: Several times as much
Grip on packed snow is a fraction of that on dry pavement, so stopping distance grows several times over. Antilock brakes help you steer, not stop shorter.
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4. You have signaled and pulled up level with the car in front of an empty curb space. What comes next?
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Answer A: Reverse slowly while turning the wheel toward the curb
From alongside the forward car you back in on a turn toward the curb, then straighten and swing the front in as the rear reaches the space.
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5. You reach an uncontrolled intersection at the same moment as a vehicle approaching from your left. What should you do?
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Answer A: Proceed, but only once you see that driver slowing
You have the right of way over the vehicle on your left, but a right of way is something the other driver has to give, so confirm it before you commit.
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6. Four vehicles reach a four-way stop from all four directions at the same instant. How is the deadlock resolved?
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Answer C: Each driver yields to the vehicle on the right and they go one by one
Yielding to the right applies to every driver, so the group untangles itself as drivers take turns rather than moving together.
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7. You are clear of the tracks after your vehicle stalled on a crossing. Whom should you contact?
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Answer C: The emergency number posted on the blue sign at the crossing, or 911
Grade crossings carry an emergency notification sign with a railroad phone number and a crossing identification number so that approaching trains can be stopped, and 911 works if that sign is not visible.
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8. You are traveling at 55 mph and see a vehicle ahead moving at about 15 mph. What is the hazard?
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Answer A: You reach it far sooner than you expect
At a 40 mph difference you cover the gap in a few seconds, which is why drivers strike slow vehicles they saw in plenty of time.
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9. A broken white line separates your lane from the lane beside it. What does it indicate?
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Answer C: Both lanes carry traffic in the same direction and lane changes are permitted
White lines separate lanes of traffic moving in the same direction, and a broken white line means changing lanes across it is permitted when it is safe.
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10. How does a full load of passengers and luggage affect your braking?
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Answer B: It lengthens the stopping distance, so you should brake earlier
More weight means more energy to get rid of, so a loaded vehicle takes longer to stop and needs earlier, gentler braking.
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11. You signaled a lane change and the signal did not switch itself off afterwards. Why does that matter?
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Answer B: Other drivers may act on a turn you do not intend to make
A signal left on tells other drivers you are about to turn, and someone may pull out in front of you. Cancel it as soon as the maneuver is finished.
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12. You have parked but your car sits across the line into the next space. What should you do?
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Answer B: Pull out and park again fully inside one space
A car over the line takes a space away from someone else and leaves too little room for the doors of the vehicles beside it.
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13. You have stopped on the shoulder of a highway and want to rejoin the traffic. What is the correct way?
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Answer D: Signal, build up speed along the shoulder, then merge into a gap
Entering a fast lane at a slow speed is what causes the conflict, so the shoulder is used to gain speed before the merge in the same way as an acceleration lane.
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14. May you stop in a marked bicycle lane to let a passenger out?
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Answer B: No, stopping there forces riders into the traffic lane
A vehicle stopped in a bike lane pushes riders out into moving traffic, which is exactly what the lane exists to prevent.
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15. A broken white line separates your lane from the lane on your right. What does it permit?
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Answer C: Changing lanes when it is safe to do so
A normal broken white line marks a boundary between lanes traveling the same way that road users may cross when it is safe.
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16. You are about to leave a roundabout when a pedestrian steps into the crosswalk on your exit. What should you do?
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Answer B: Yield to the pedestrian and wait for the crosswalk to clear
Roundabout crosswalks sit on the entries and exits, and drivers must yield to pedestrians using them.
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17. You are descending a long steep grade with a loaded truck close behind you. What should you do?
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Answer A: Hold a steady speed and let it pass when it can
Gravity pushes a loaded truck downhill and it cannot slow quickly, so give it a predictable speed and room to get by rather than braking in front of it.
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18. You are passing a tractor-trailer on a wet freeway and its wheels throw heavy spray. What is the best technique?
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Answer B: Increase your wipers and pass steadily without hesitating
Spray blinds you for as long as you stay beside the truck, so prepare the wipers first and then spend as little time in the spray as possible.
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19. Yellow signs each showing one large black arrowhead, installed in a row along the outside of a curve, are
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Answer D: chevron alignment signs marking the change of direction of the curve
Chevron alignment signs are placed on the outside of a curve so that several are in view at once, letting the driver judge how sharply the road turns.
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20. What should you do about snow and ice on your vehicle before driving?
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Answer C: Clear all glass, mirrors and lights, and the roof and hood as well
Snow left on the roof or hood slides onto your windshield when you brake and blows into the path of drivers behind you, and covered lights make your vehicle hard to see.
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21. On loose gravel or deep fresh snow, how does an antilock system affect the stopping distance?
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Answer D: It can lengthen it, although you keep the ability to steer
On loose surfaces a locked wheel piles up a wedge of gravel or snow that helps it stop, so the antilock stop can be longer even though steering still works.
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22. What should you do with the key and your belongings when you leave the vehicle in a public lot?
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Answer D: Take the key with you, lock up and put valuables out of sight
Most vehicle thefts are opportunistic: a key left behind or a bag in plain view is the invitation.
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23. You and an opposing driver reach a four-way stop at the same time and both of you are turning right. What should happen?
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Answer C: Both may turn at the same time into their own lanes
Two opposing right turns take drivers into different lanes without crossing, so both can proceed together once pedestrians are clear.
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24. In the code that governs pavement markings, what does a double line stand for?
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Answer B: A maximum restriction
The marking code is consistent: a double line means the strongest restriction, a solid line discourages or forbids crossing, and a broken line is permissive.
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25. Where is a three-point turn most clearly a bad idea?
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Answer A: On a busy street near a curve, where approaching drivers cannot see you
The maneuver leaves you blocking the road for several seconds, so it needs light traffic and a long clear view; a blind curve gives neither.