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Oklahoma: Traffic signals Practice Test

Red, yellow and green lights, arrows, flashing signals, turns on red, pedestrian signals and lane control signals.

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22 questions · About 9 min

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  • Every answer cites its source in the manual
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Questions are original and based on the official manual "Oklahoma Driver Manual" (2025 (updated November 24, 2025)), Service Oklahoma.

All 22 questions in this practice test

Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.

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  1. How do traffic signals remove the guesswork about who goes next at an intersection?

    Top view of an intersection of two two-lane streets with crosswalks on every side; the traffic signal ahead shows green and your blue car approaches the empty intersection.
    • By granting the right-of-way in each direction
    • By giving priority to the busiest road
    • By letting the first driver to arrive go first
    • By giving the right-of-way to the largest vehicle
    Show answer

    Correct answer: By granting the right-of-way in each direction

    Traffic signals grant the right-of-way in each direction at intersections.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  2. A traffic officer is directing traffic at an intersection that has a traffic signal. Which do you obey?

    A four-way intersection from above: a person in a navy cap and bright yellow-green vest with white gloves stands in the middle with both arms held out to the sides; a gray, a red and a blue car are on the roads around it; a signal housing on a pole seen from behind.
    • The traffic signal unless it is red
    • Whichever one lets you go first
    • The traffic officer at all times
    • The signal on the road with more traffic
    Show answer

    Correct answer: The traffic officer at all times

    The manual says you must obey the officer at all times when an officer is directing traffic.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  3. As you approach an intersection, how should you adjust your speed?

    A blue car on a city road approaching an intersection with green traffic signals and crosswalk stripes, cars parked along each curb, and storefront buildings beyond the sidewalks.
    • So that you reach the intersection before the light changes
    • So that you can slow down or stop if the light changes
    • So that you match the speed of the car ahead
    • So that you can accelerate through a yellow light
    Show answer

    Correct answer: So that you can slow down or stop if the light changes

    The manual says to adjust speed so you can slow or stop if the light changes.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  4. You have a green light, but yielding the right-of-way would prevent a collision. What should you do?

    Top view: your light is green while a car is still crossing in the middle of the intersection.
    • Go ahead, because you have the right-of-way
    • Sound your horn and keep going
    • Speed up to clear the intersection
    • Yield, even if the other driver is wrong
    Show answer

    Correct answer: Yield, even if the other driver is wrong

    Safety comes first: drivers should yield if it prevents a collision, even when the other person is wrong.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  5. Color-blind people can tell a signal’s color by its position. Which color is on top?

    • Red
    • Yellow
    • Green
    • White
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    Correct answer: Red

    Color-blind people know that red is on top, yellow in the middle and green on the bottom.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  6. What should you be sure of before you start through an intersection on a green light?

    Top view of an intersection with green traffic lights: a blue car approaches from the bottom, a white car waits on the cross street at the right, and a red car drives away beyond the intersection.
    • That the light has just turned green
    • That no vehicle is stopped behind you
    • That the intersection is clear
    • That the cross street has a yellow light
    Show answer

    Correct answer: That the intersection is clear

    On green, drivers must be sure the intersection is clear and watch for drivers racing to beat a red light.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  7. What does a steady yellow light mean?

    A steady yellow traffic light
    • The light is about to turn green, so you should get ready to go
    • The light is about to turn red, so stop if you can do so safely
    • Speed up to get through before it turns red
    • Stop only if other vehicles are waiting
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    Correct answer: The light is about to turn red, so stop if you can do so safely

    A steady yellow warns that red is coming, and drivers must stop if they can stop safely before the crosswalk.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  8. What should you do as you approach a steady yellow light?

    A city intersection whose traffic signals show a steady yellow light; the blue car is still some distance back from the crosswalk.
    • Speed up slightly so you can beat the changing light
    • Honk to warn cross traffic
    • Change lanes before the intersection
    • Adjust your speed so you can come to a smooth stop if needed
    Show answer

    Correct answer: Adjust your speed so you can come to a smooth stop if needed

    The manual tells drivers to adjust speed for a smooth stop and not to speed up to beat the light.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  9. Where must you stop for a red light?

    Top view of a city intersection where a signal shows a red light, white crosswalk bars cross the street, and the blue car approaches in the lane several car lengths back.
    • Before entering the crosswalk or intersection
    • Inside the crosswalk
    • After you have entered the intersection
    • At the far side of the intersection
    Show answer

    Correct answer: Before entering the crosswalk or intersection

    A red light requires a complete stop before the crosswalk or intersection.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  10. A flashing red light means the same as which of these?

    A traffic signal flashing red
    • A stop sign
    • A yield sign
    • A flashing yellow light
    • A green light
    Show answer

    Correct answer: A stop sign

    A flashing red light is treated like a stop sign, and you may go when it is safe to cross.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  11. Where is a flashing red light used?

    A traffic signal flashing red
    • At intersections where all traffic must stop for pedestrians first
    • At intersections under construction
    • At dangerous intersections where the crossing traffic may or may not stop
    • At highway entrance ramps
    Show answer

    Correct answer: At dangerous intersections where the crossing traffic may or may not stop

    Flashing red lights are used at dangerous intersections where crossing traffic may or may not stop.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  12. What should you do at a flashing yellow light?

    A flashing yellow traffic light
    • Come to a complete stop and wait until the light changes to green before going
    • Slow down, look in both directions and drive slowly and carefully through the intersection
    • Stop completely, then go when it is safe
    • Speed up to clear the intersection
    Show answer

    Correct answer: Slow down, look in both directions and drive slowly and carefully through the intersection

    A flashing yellow means caution: slow down, look both ways and be prepared to stop.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  13. At a flashing yellow left-turn arrow, who has the right-of-way?

    A four-section left-turn signal head in which the third lens, a yellow left arrow, is lit with short motion lines around it showing that it is blinking.
    • The driver turning left
    • The traffic behind the turning driver
    • The driver who reaches the intersection first
    • Oncoming traffic
    Show answer

    Correct answer: Oncoming traffic

    With a flashing yellow left-turn arrow you must yield to oncoming traffic and pedestrians, which have the right-of-way.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  14. According to the manual, what does a flashing red arrow generally mean?

    A traffic signal with a red arrow light flashing.
    • All turns in the direction of the arrow are prohibited until a green signal
    • You may turn after yielding to oncoming traffic
    • You may turn after slowing down and looking both ways for traffic
    • You may turn only if no pedestrians are crossing
    Show answer

    Correct answer: All turns in the direction of the arrow are prohibited until a green signal

    In general a red arrow prohibits turns in its direction, and you must wait for a green signal.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  15. When a green arrow is lit, what may you do?

    A close-up of one section of a traffic signal showing a lit green arrow pointing left; the rest of the signal is out of view.
    • Turn only after the red light has gone off and the green light is on
    • Turn only if there is no oncoming traffic
    • Turn in the direction of the arrow, even when the red light is still on
    • Go straight through the intersection
    Show answer

    Correct answer: Turn in the direction of the arrow, even when the red light is still on

    A green arrow lets you turn in its direction even though the red light remains lit.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  16. If you are in a turning-only lane, what must you wait for?

    A lane with a white curved marking and the word ONLY painted on the pavement.
    • A green light
    • The arrow
    • A police officer’s signal
    • A break in the pedestrian traffic
    Show answer

    Correct answer: The arrow

    In a turning-only lane you must wait for the arrow signal.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  17. At a green arrow, which maneuver may you make unless signs give other information?

    A traffic signal with four lenses that all show left-pointing arrows; only the bottom green arrow is lit.
    • Any turn, or going straight ahead
    • Only going straight
    • A U-turn
    • Only the turn the arrow indicates
    Show answer

    Correct answer: Only the turn the arrow indicates

    You may make only the turn the arrow shows unless signs say otherwise.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  18. If there are turning lanes at a signal, what must you do to make the turn?

    • Be in the proper lane
    • Turn from any lane once the arrow is lit
    • Wait in the lane you are already in
    • Wait until all lanes are clear
    Show answer

    Correct answer: Be in the proper lane

    Where turning lanes exist, you must be in the proper lane to make the turn.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 26 · Open this page in the manual

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  19. What does a red X over a lane control signal mean?

    Three signal boxes hang from an overhead bar; the left one shows a red X and the other two are dark.
    • Clear the lane
    • The lane is open for traffic
    • Don’t use the lane
    • Left turn permitted
    Show answer

    Correct answer: Don’t use the lane

    The red lane control signal means the lane must not be used.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 27 · Open this page in the manual

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  20. What does a steady yellow X on a lane control signal mean?

    Three signal boxes hang from an overhead bar; the middle one shows a steady yellow X and the other two are dark.
    • Don’t use the lane
    • Clear the lane
    • The lane is open for traffic
    • Left turn permitted
    Show answer

    Correct answer: Clear the lane

    A yellow X tells drivers to clear the lane.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 27 · Open this page in the manual

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  21. What does a flashing yellow X on a lane control signal mean?

    Three signal boxes on an overhead frame above a multi-lane road; the middle one shows a yellow X with flash marks around it and the other two are dark.
    • Don’t use the lane
    • The lane is open for traffic
    • Stop and wait for a green arrow
    • A left turn is permitted
    Show answer

    Correct answer: A left turn is permitted

    When the yellow X is flashing, a left turn is permitted.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 27 · Open this page in the manual

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  22. What does a green arrow pointing down over a lane mean?

    Three signal boxes hang from an overhead bar; the right one shows a green arrow pointing down and the other two are dark.
    • The lane is open for traffic
    • Clear the lane
    • Don’t use the lane
    • A left turn is permitted here
    Show answer

    Correct answer: The lane is open for traffic

    A green lane control signal shows that the lane is open for traffic.

    Source: ⁨Oklahoma Driver Manual (2025 (updated November 24, 2025))⁩, page 27 · Open this page in the manual

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