Oklahoma SOK Permit Practice Test 49
- Questions20
- Correct to pass15
- Passing score75%
- Minimum age15 years
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1. What change in the road does this sign announce?
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Answer B: The two directions of travel are about to be separated, and the driver must keep to the right of the separation
Ahead the roadway splits into separate one-way roadways on either side of a median, so the driver stays to the right of the divider and no longer meets oncoming vehicles.
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2. At roughly what speed can hydroplaning begin when a lot of water is lying on the road?
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Answer C: At speeds as low as about 35 mph
With enough water and less than perfect tread, a tire can start to ride on the water at around 35 mph, well below normal highway speeds.
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3. You are waiting inside the intersection to turn left when your light turns red. What should you do?
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Answer A: Complete the turn as soon as the way is clear
Once you have legally entered the intersection you should clear it as soon as the oncoming traffic has stopped, rather than sit in the path of cross traffic.
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4. Where is this sign normally installed?
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Answer A: At an island or other obstruction in the roadway, to show which side traffic must take
It is placed at a divider, island or fixed obstruction so that drivers approaching it know without hesitating which side to pass on.
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5. A small plate under a stop sign reads CROSS TRAFFIC DOES NOT STOP. What is it telling you?
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Answer D: Traffic on the cross street is not required to stop at all
The plate warns that the other road is uncontrolled, so you must wait for a gap instead of expecting anyone to take turns with you.
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6. What does a blood alcohol concentration of 0.08 mean for the driver of a car?
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Answer B: It is the level almost every state treats as legally intoxicated
In almost every state a driver at 0.08 or above is legally intoxicated whatever the driver seems like, but impairment starts well before that level is reached.
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7. Where is signing of this kind normally placed along a freeway?
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Answer D: Ahead of the interchange and again at the exit, so a driver can reach the correct lane in time
Guide information for an interchange is repeated on the approach and at the ramp, because a driver who learns about the exit only at the last moment has no room left for a safe lane change.
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8. The inside of your windshield keeps fogging up on a cold, damp day. What clears it best?
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Answer B: The defroster with the air conditioning on, which dries the air
Fog on the inside is moisture from the cabin air. The air conditioner dries that air, and the defroster warms the glass, so together they clear it and keep it clear.
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9. You are stopped at a red light ready to turn right when a person pushing a stroller steps into the crosswalk. What should you do?
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Answer A: Stay stopped until they have crossed your path
A turn on red gives way to every pedestrian in the crosswalk, and someone pushing a stroller has even less room to react.
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10. The queue for an exit ramp has backed up into the right lane of the highway. What should you do if you want that exit?
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Answer B: Join the back of the queue in the lane instead of cutting in later
Passing a queue and forcing in at the front stops the whole line, and using the shoulder puts you where broken-down vehicles are expected to be.
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11. How does higher speed affect the outcome of a crash?
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Answer A: It leaves less time to react and greatly increases the force of impact
Speed shortens the time available to avoid a hazard and raises the energy released in an impact, so both the likelihood and the severity of a crash increase.
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12. A truck passes you in heavy rain and its spray blanks out your windshield. What should you do?
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Answer B: Hold the wheel steady, ease off slightly and let the wipers clear it
The blackout lasts a second or two. Keeping your line and easing off is far safer than braking hard or steering blind toward the shoulder.
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13. Why is following distance measured in seconds rather than in car lengths?
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Answer A: Because a time gap automatically grows with speed, while a fixed number of car lengths does not
A gap counted in seconds keeps the same margin of reaction time at any speed, whereas a fixed number of car lengths becomes far too small as speed rises.
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14. You are traveling a long distance on a highway with three lanes in your direction, at about the speed of the surrounding traffic. Which lane is generally the best choice?
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Answer C: The center lane, which keeps you clear of merging traffic and of overtaking traffic
On a three-lane roadway the center lane avoids both the ramp traffic on the right and the overtaking traffic on the left, so it usually has the steadiest flow.
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15. A driver slows to walking pace at this sign, never stops rolling and eases into the intersection. How is that treated?
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Answer B: It is a violation, because the vehicle never came to a complete halt
What is required is a full halt with the wheels no longer turning, so slowing down, however carefully, does not satisfy it.
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16. Under Oklahoma law, what is prohibited when driving down a steep hill?
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Answer C: Coasting with the vehicle in neutral or with the clutch pedal held down
Oklahoma law makes it a violation to coast down a grade with the vehicle's gears in neutral or with the clutch pedal disengaged, rather than keeping the vehicle in gear.
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17. An Oklahoma Class D learner permit holder becomes eligible for the driving test but fails it three times. After that, how often may they retest?
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Answer A: Once every 30 days
After three unsuccessful attempts following the date of eligibility, an Oklahoma learner permit holder may retake the driving test only once every 30 days.
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18. An oncoming vehicle at night has its high beams on and you are being dazzled. Where should you look?
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Answer A: Toward the right edge of your lane
Looking toward the right edge line keeps you on course while sparing your eyes the worst of the glare. Slow down and do not retaliate with your own high beams.
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19. About how far behind a tractor-trailer does the driver's rear blind spot reach?
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Answer C: Around 30 feet
The area behind a large truck is hidden for roughly 30 feet, so a driver tucked in there cannot be seen at all.
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20. Where should you be looking as you steer through a turn?
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Answer C: Toward the point on the new road where you want to end up
Drivers steer toward what they look at, so looking through the turn to where you want to go keeps the path smooth and accurate.