South Dakota DPS Permit Practice Test 49
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. You and an oncoming driver are both turning left at the same intersection. What is the usual rule?
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Answer D: Both turn in front of each other unless markings show otherwise
The normal practice is to pass driver side to driver side, turning in front of one another, unless pavement markings or signs direct a different path.
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2. A small signal face beside a bikeway shows red, yellow and green lenses that each carry a bicycle symbol. Whom does it control?
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Answer C: Bicyclists using that crossing or bikeway
A bicycle signal face governs bicycle movements only, and people on foot at the same corner still follow the pedestrian signal.
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3. A yellow sign reads SOFT SHOULDER. What is it telling you?
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Answer C: The shoulder may not carry the weight of a vehicle
A soft shoulder is unpaved and can let a wheel sink, so a driver who leaves the pavement there may lose control or become stuck.
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4. Beyond the point this sign refers to, which movement becomes unlawful?
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Answer D: Driving on the far side of the separation, against the flow
Once the two directions are separated, each roadway carries one-way traffic, so crossing to the other side means driving into oncoming vehicles.
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5. You are following closely behind a vehicle you intend to pass on a two-lane road. What should you do first?
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Answer D: Drop back to give yourself room to build speed before you pull out
From close behind you cannot see far enough ahead and you have no room to gather speed, so the pass takes longer and starts blind.
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6. You are behind a snow plow working on a highway. What is the correct way to drive?
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Answer C: Stay well back and do not try to pass it
A plow throws snow, runs wider than its body and works on the poor surface ahead of it, so the cleared road behind it is the safest place to be.
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7. A pedestrian signal displays a steady walking person symbol. What does it mean for a pedestrian at that corner?
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Answer B: The pedestrian may start crossing in the direction of the signal
The steady walking person permits a pedestrian to begin the crossing, while still yielding to vehicles already lawfully in the intersection.
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8. The green left-turn arrow ends and a steady red ball comes on for your lane, at an intersection where no turn on red is allowed. What must you do?
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Answer D: Stop and wait, because no turn is allowed while the red ball is lit
Once a red indication faces your lane and no turn on red is permitted there, the turn is over; only a vehicle already inside the intersection completes its movement.
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9. How should tire pressure be checked and set?
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Answer B: When the tires are cold, set to the pressure specified by the vehicle manufacturer
Driving heats the air and raises the reading, and the sidewall number is a maximum rather than a recommendation, so check cold and use the figure on the vehicle placard or in the owner's manual.
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10. You are about to slow down sharply for a turn. Which check comes first?
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Answer A: A look in the mirror to see how close the traffic behind you is
Any hard slowing needs a mirror check first, because the driver behind is the one who has to react to it.
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11. How long can cannabis affect a driver?
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Answer A: For hours after the strongest effects have passed
Slowed reactions, poor tracking and weak judgment of distance can last for hours, well beyond the point where the user believes the effects are over.
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12. What is the right speed for a normal right turn at a city corner?
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Answer C: Slow enough to hold your lane and stop for a pedestrian
A city right turn is tight and crosses a crosswalk, so the correct speed is one that keeps you inside your lane and still allows a stop.
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13. What happens when alcohol is combined with another drug that also affects the nervous system?
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Answer B: Impairment is often far greater than either one alone would produce
Combined substances can multiply each other's effects, producing impairment well beyond what a driver would expect from either one taken separately.
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14. Two drivers each have three drinks, one over three hours and one in half an hour. What is the difference?
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Answer C: The fast drinker reaches a higher peak level
The liver removes alcohol at a steady rate, so drinking faster than the body can clear it pushes the blood alcohol level much higher.
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15. A wasp flies in through the open window while you are driving. What is the safest reaction?
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Answer B: Stay calm, slow down and stop somewhere safe
Far more crashes come from the driver's reaction to an insect than from the insect, so keep your eyes forward, slow down and deal with it stopped.
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16. You are inside a tunnel with no shoulder when an ambulance comes up behind you with lights and siren. What should you do?
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Answer D: Keep going at a safe speed and pull over once you are clear of the tunnel
Stopping in a tunnel or on a narrow bridge blocks the only lane, so continue at a safe speed to the first place where you can pull clear.
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17. Where should the lap part of the seat belt sit?
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Answer C: Low and snug across the hips, touching the tops of both of the thighs
The hip bones can take crash forces, but the abdomen cannot, so the lap belt goes low and tight across the hips.
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18. A signal stands part way up a freeway entrance ramp and turns green briefly again and again. How many vehicles does such a signal normally release on each green?
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Answer A: One for each lane of the ramp
A ramp control signal releases a single vehicle per lane on each green so that vehicles reach the merge one at a time instead of in a bunch.
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19. A sign warns that the right lane ends ahead, and traffic is still flowing freely. What should you do if you are in that lane?
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Answer C: Signal, adjust your speed and move left in good time before the lane ends
When traffic is moving freely there is room to merge early and smoothly, which avoids the last-second lane change at the closure point.
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20. A separate right-turn lane leads onto the cross street and carries a yield sign. What does it require?
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Answer D: Slowing and giving way to traffic and people, stopping if needed
A yield requires you to slow, give way to traffic in the lane you are joining and to pedestrians, and stop only if that is what safety demands.
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21. Cones and drums mark a shifted lane through a work zone. What should you do?
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Answer A: Follow the path that they mark and stay inside it
Channelizing devices define the temporary travel path, and the space on the other side of them belongs to the workers.
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22. On a long uphill grade a second lane opens on the right and a sign directs slower traffic into it. You are towing a trailer and holding up a line of vehicles. What should you do?
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Answer A: Move into the right-hand lane and let the faster traffic use the left lane
A climbing lane exists so that slow vehicles can be passed safely, and the slower vehicle is the one that belongs in it.
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23. What does the solid white line running along the right side of a highway mark?
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Answer A: The right edge of the traveled way
A solid white edge line shows where the traveled way ends on the right, which is particularly useful at night and in poor visibility.
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24. What do the numbers on a pedestrian countdown display show?
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Answer A: The seconds remaining to finish a crossing already under way
The countdown runs during the pedestrian change interval and shows how many seconds are left before the crossing time ends.
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25. Which sign shape is reserved for one message only, the requirement to stop?
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Answer A: The octagon
The octagon is used for the stop sign and for no other message, so the outline alone identifies the requirement even when the legend is hard to read.