Oklahoma SOK Permit Practice Test 27
- Questions20
- Correct to pass15
- Passing score75%
- Minimum age15 years
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1. A yellow diamond shows two lanes narrowing into one. What does it require of a driver?
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Answer D: Adjusting speed and merging before the lane disappears
The lane ends sign gives notice that one lane will be dropped, so drivers should adjust speed and blend into the continuing lane in good time.
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2. You have to leave a trailer parked on a slope. What extra step protects it?
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Answer D: Chock the trailer wheels as well as setting the brake
Chocks physically block the wheels, which is the only thing that still holds if a brake or a coupling lets go.
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3. May you stop briefly across the sloped ramp that joins the sidewalk to the street at a corner?
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Answer B: No, that ramp must stay clear for people using wheelchairs
A curb ramp is the only way many people can get from the sidewalk to the crosswalk, so blocking it even briefly is prohibited.
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4. After completing a turn you notice your signal is still flashing. What should you do?
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Answer A: Switch it off at once, before other drivers act on it
A signal left on after a turn is a false message, and drivers waiting to pull out may move into your path because of it.
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5. How should you use your mirrors while another vehicle overtakes you on a multilane road?
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Answer C: Follow it from the inside mirror to the side mirror and then to your own view
Handing the vehicle from one mirror to the next keeps it in sight through the blind spot instead of losing it there.
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6. In most states, how far before a turn must your signal already be on in city traffic?
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Answer B: At least 100 feet, roughly the length of six or seven cars
Most states require the signal for at least 100 feet before a turn in city driving, which gives drivers behind you time to react before you slow; several require more at higher speeds.
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7. A set of reversible express lanes is closed off with gates and signs while it runs the other way. What must you never do?
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Answer C: Enter past a closed gate or a sign showing the lanes are closed
When reversible lanes are closed they may already be carrying traffic in the opposite direction, so entering past a gate can put you head-on into that traffic.
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8. A driver ahead of you extends the left arm straight out horizontally through the window. What is being signaled?
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Answer C: A left turn
The left arm held straight out is the standard hand signal for a left turn.
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9. What does a posted speed limit sign represent?
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Answer B: The maximum speed permitted under ideal conditions
A speed limit is an upper limit that assumes good weather, good visibility and light traffic, so the safe speed is often lower than the posted figure.
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10. Why do young drivers carrying several friends face a higher crash risk?
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Answer D: Because young passengers are a strong source of distraction and pressure
Crash risk for new drivers rises with each extra young passenger, mainly through distraction and social pressure.
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11. You have passed a large truck and want to move back into its lane. What should you see first?
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Answer B: Both of its headlights in your rear-view mirror
Seeing both headlights in your mirror means you are far enough ahead to be out of the truck's front no-zone before you move over.
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12. You are approaching the entry of a roundabout and a pedestrian is crossing the marked crosswalk on your approach lane. What must you do?
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Answer D: Stop before the crosswalk and let the pedestrian cross
Roundabout crosswalks sit a short distance back from the yield line, and drivers must yield there before they ever reach the circulating lanes.
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13. How many alcoholic drinks does it take to begin affecting driving ability?
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Answer C: Even one drink can affect it
A single drink can slow reactions and weaken judgment before you feel any change. Impairment starts long before a person feels drunk.
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14. Why is repeatedly changing lanes to work through heavy traffic a poor idea?
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Answer A: It raises the crash risk and saves almost no time
Each lane change adds a conflict with another vehicle, and in congestion the lanes move at similar average speeds, so the gain is negligible.
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15. You and a driver coming from the opposite direction reach a four-way stop at the same time and you are both going straight ahead. What happens next?
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Answer D: Both of you may move off together, because your paths do not cross each other
Opposing vehicles that are both going straight do not cross paths, so they can move off together once the intersection is clear.
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16. You are making a legal U-turn at an intersection. Who has the right of way?
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Answer C: Everyone else, until your turn is complete
A U-turn crosses several paths at once, so you yield to oncoming vehicles, to crossing traffic and to pedestrians before starting it.
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17. How many correct answers are needed to pass the Oklahoma Class D written knowledge test?
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Answer B: 15
A passing result requires 15 correct answers out of the 20 questions on the Oklahoma written knowledge test.
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18. In a work zone a flagger signals you to stop, but the sign beside the road says the lane is open. What should you do?
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Answer C: Obey the flagger
A flagger controls the work zone in real time and the instruction outranks the signs and markings, which cannot reflect what is happening at that moment.
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19. You are driving forward into a perpendicular space with a large pickup parked on the right of it. How should you take it?
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Answer D: Stay wide, turn in late and keep clear of the pickup
Starting the turn later keeps the rear of your car away from the vehicle beside the space, which is exactly what a tight early turn clips.
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20. A sign beside the signal reads STOP HERE ON RED. What does it tell you?
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Answer B: Stop at that point on red, not closer to the intersection
The sign marks the required stopping point, which is set back from the corner so that turning vehicles and sight lines are not blocked.