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Utah: Traffic signals

Red, yellow and green lights, arrows, the flashing yellow arrow, flashing signals and pedestrian signals. Split into 2 shorter tests so you're not stuck in one long quiz.

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Traffic signals — Part 1

Questions in this part include: “What do the safe driving tips say about traffic signals?”

17 questions≈ 7 min
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Traffic signals — Part 2

Questions in this part include: “You are stopped by a red left-turn arrow that does not change, and it is safe. When may you turn left?”

16 questions≈ 6 min
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All 33 Traffic signals questions with answers

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  1. What do the safe driving tips say about traffic signals?

    • Obey them only when other traffic is present
    • Obey them unless the intersection looks clear
    • Know what they mean and obey them at all times
    • Know what they mean but obey them only during the day
    Show answer

    Correct answer: Know what they mean and obey them at all times

    Know what the traffic signals mean and obey them at all times.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 26 · Open this page in the manual

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  2. When stopping at a stop sign or traffic signal, where must you NOT stop?

    Top view of a city intersection with a red traffic light: a white stop line, then a striped crosswalk before the cross street; a blue car approaches from the bottom and a red car crosses from the left.
    • Over a marked stop line, pedestrian crosswalk, or sidewalk
    • Behind a marked stop line and before the crosswalk edge
    • Before a pedestrian crosswalk, without blocking it
    • Several feet behind the vehicle ahead of you
    Show answer

    Correct answer: Over a marked stop line, pedestrian crosswalk, or sidewalk

    Do not stop over a marked stop line, pedestrian crosswalk, sidewalk, or other markers.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 31 · Open this page in the manual

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  3. What is the rule about stopping your vehicle in an intersection?

    A red car at a green light before an intersection, with a blue car stopped just past the intersection on the far side and a green car on the cross street
    • Stop in the middle of the intersection to wait for a gap
    • Stop in the intersection only when turning left
    • Do not stop the vehicle in the intersection
    • Stop in the intersection only on a green signal
    Show answer

    Correct answer: Do not stop the vehicle in the intersection

    The handbook tells you not to stop the vehicle in the intersection.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 31 · Open this page in the manual

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  4. What must you do at a flashing red light?

    A traffic signal flashing red
    • Make a complete stop
    • Slow down and go on if the way is clear
    • Make a rolling stop and continue
    • Yield only to vehicles on the cross street
    Show answer

    Correct answer: Make a complete stop

    A rolling stop is not adequate: you must come to a complete stop at a steady red light and at a flashing red light.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 35 · Open this page in the manual

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  5. A signal above a flex lane shows a red X. What does it mean?

    A lane-control signal showing a red X
    • You cannot use that lane
    • You may use the lane only to pass
    • You may use the lane only if you slow down
    • You may use the lane only to turn left
    Show answer

    Correct answer: You cannot use that lane

    A red X over a flex lane tells you the lane is closed to you at that time.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 39 · Open this page in the manual

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  6. A signal above a flex lane shows a green arrow. What does it mean?

    An overhead lane-control signal showing a green arrow
    • The lane is closing ahead
    • You must stop before entering the lane
    • You can use that lane
    • Traffic in that lane may only turn
    Show answer

    Correct answer: You can use that lane

    A green arrow over a flex lane means that lane is open for you to travel in.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 39 · Open this page in the manual

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  7. What should you do before entering a flex lane?

    Top view of a three-lane road whose middle lane has two broken yellow lines on each side and is empty; a blue car drives up the right lane and a white car comes the other way in the left lane.
    • Wait for another vehicle to enter first
    • Check to see which lanes can be used at that time
    • Move into the far right lane first
    • Flash your headlights at oncoming traffic
    Show answer

    Correct answer: Check to see which lanes can be used at that time

    Some lanes carry traffic in one direction at one time and the other direction at another time, so you check which lanes are open before entering.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 39 · Open this page in the manual

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  8. What do ramp meters help prevent?

    A blue car waits first in line at a red ramp-metering signal on a single-lane freeway entrance ramp, with a red car and a white car queued behind it.
    • Trucks from using the freeway during rush hours
    • Slowdowns and “stop-and-go” conditions on the freeway
    • Drivers from changing lanes on the on-ramp
    • Vehicles from entering the freeway without paying
    Show answer

    Correct answer: Slowdowns and “stop-and-go” conditions on the freeway

    Ramp meters help prevent slowdowns and stop-and-go conditions on freeways.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 40 · Open this page in the manual

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  9. What lights do ramp meters have?

    • Only red and green lights
    • Red, yellow, and green lights
    • Only red and yellow lights
    • Flashing red and white lights
    Show answer

    Correct answer: Only red and green lights

    Ramp meters look like traffic signals but have only alternating red and green lights.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 40 · Open this page in the manual

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  10. How many vehicles may pass each time a ramp meter’s green light comes on, unless posted differently?

    A blue car waits first in line at a red ramp-metering signal on a single-lane freeway entrance ramp, with a red car and a white car queued behind it.
    • Two vehicles
    • Three vehicles
    • One vehicle
    • As many as can fit
    Show answer

    Correct answer: One vehicle

    Ramp meters allow only one vehicle to pass per green light unless posted differently.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 40 · Open this page in the manual

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  11. What shows that ramp metering is in effect at an on-ramp?

    • A flashing red light on the freeway
    • A lighted “meter on” sign
    • A white diamond painted on the ramp
    • A sign reading “express lane open”
    Show answer

    Correct answer: A lighted “meter on” sign

    A lighted “meter on” sign at the entrance to the on-ramp shows metering is in effect.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 41 · Open this page in the manual

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  12. The “meter on” sign at an on-ramp is not lit. What may drivers do?

    Top view of a multi-lane road with dashed white lane lines and a yellow left edge line, with six cars in the lanes. A curved side road leads off to the right with the blue car on it; beside it stand a signal housing with two dark lamps and a blank black square sign on a post.
    • Stop and wait for a green light
    • Use the ramp only as a carpool
    • Wait for an officer to wave them on
    • Enter the freeway as usual
    Show answer

    Correct answer: Enter the freeway as usual

    If the sign is not illuminated, metering is off and you can enter normally.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 41 · Open this page in the manual

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  13. When does ramp metering occur?

    A blue car driving down a single-lane freeway entrance ramp toward a ramp-metering signal showing red, with freeway traffic in three lanes to the left.
    • At all times of day
    • Only when the freeway is closed ahead
    • Only when many vehicles try to enter
    • Only when snow is on the road
    Show answer

    Correct answer: Only when many vehicles try to enter

    Metering is used only when many vehicles are trying to get on the freeway.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 41 · Open this page in the manual

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  14. While traveling straight through a continuous flow intersection, why might you face a red light just past the intersection?

    • To let pedestrians cross the intersection
    • To warn of a railroad crossing ahead
    • To let left-turning cars cross in front of you
    • To mark the end of a ramp meter zone
    Show answer

    Correct answer: To let left-turning cars cross in front of you

    The red light lets left-turning cars cross in front of through traffic.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 42 · Open this page in the manual

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  15. Besides traffic signals, signs, and road markings, which of these does the handbook include as traffic controls?

    • Weather forecasts on the radio
    • Horn signals from other drivers
    • Advertising signs beside the road
    • Directions from highway workers
    Show answer

    Correct answer: Directions from highway workers

    Traffic controls also include directions from law enforcement, highway workers, and school crossing guards.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 45 · Open this page in the manual

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  16. On a vertical traffic light, what is the order of the colors from top to bottom?

    • Red, yellow, green
    • Green, yellow, red
    • Yellow, red, green
    • Red, green, yellow
    Show answer

    Correct answer: Red, yellow, green

    Vertical traffic lights are red at the top, yellow in the middle, and green at the bottom.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 45 · Open this page in the manual

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  17. On a horizontal traffic light, which light is on the left?

    • Green
    • Yellow
    • Red
    • It changes by intersection
    Show answer

    Correct answer: Red

    On horizontal lights the red light is on the left, yellow in the middle, and green on the right.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 45 · Open this page in the manual

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  18. What does a green traffic light mean?

    A traffic signal showing a steady green light
    • You must stop and then proceed
    • You may go through with caution if the way is clear
    • You may enter only if you are turning right
    • You may enter without checking cross traffic
    Show answer

    Correct answer: You may go through with caution if the way is clear

    A green light lets you go, but you must use caution and be sure the way is clear.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 45 · Open this page in the manual

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  19. What does a green arrow light allow vehicles to do?

    A green left-turn arrow lit on one signal head while the head beside it shows red
    • Go in any direction after yielding to vehicles and pedestrians still in the intersection
    • Go only after coming to a complete stop and waiting for the arrow to flash
    • Go in the direction of the arrow without yielding to vehicles or pedestrians in the intersection
    • Go only in the direction of the arrow, after yielding to vehicles and pedestrians in the intersection
    Show answer

    Correct answer: Go only in the direction of the arrow, after yielding to vehicles and pedestrians in the intersection

    A green arrow permits movement only in its direction, and you first yield to vehicles and pedestrians still in the intersection.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 45 · Open this page in the manual

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  20. What does a yellow traffic light tell you?

    A steady yellow traffic light
    • The light is about to change to red
    • The light has just turned green
    • You must stop only if a vehicle is coming
    • Cross traffic now has a green light
    Show answer

    Correct answer: The light is about to change to red

    A yellow light is a warning that the light is about to turn red.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 45 · Open this page in the manual

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  21. What should you do at a flashing yellow traffic light?

    A flashing yellow traffic light
    • Stop and look both ways before entering
    • Stop and wait until the light turns green
    • Slow down and proceed with caution, ready to stop for any traffic
    • Proceed at normal speed because you have the right-of-way
    Show answer

    Correct answer: Slow down and proceed with caution, ready to stop for any traffic

    A flashing yellow light calls for slowing down and proceeding with caution while being prepared to stop for any traffic.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 45 · Open this page in the manual

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  22. What does a flashing yellow arrow light mean?

    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.
    • You must stop and wait for a green arrow
    • Turns are permitted, but you must first yield to oncoming traffic and pedestrians
    • Turns are prohibited until the arrow stops flashing
    • You may turn without yielding because oncoming traffic must stop for you
    Show answer

    Correct answer: Turns are permitted, but you must first yield to oncoming traffic and pedestrians

    A flashing yellow arrow permits a turn, but oncoming traffic has a green light, so you yield to it and to pedestrians.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  23. At a flashing yellow arrow, what kind of signal does oncoming traffic have?

    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.
    • A red light
    • A flashing red light
    • A yellow light
    • A green light
    Show answer

    Correct answer: A green light

    The handbook says that when you see a flashing yellow arrow, oncoming traffic has a green light.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  24. Where must you wait at a red traffic light until it turns green?

    Top view of a city intersection with a red traffic light: a white stop line, then a striped crosswalk before the cross street; a blue car approaches from the bottom and a red car crosses from the left.
    • Behind the stop line, crosswalk, or intersection
    • In the middle of the intersection
    • Beside the stop line, in the crosswalk
    • Past the crosswalk but before the cross street
    Show answer

    Correct answer: Behind the stop line, crosswalk, or intersection

    A red light means you must stop before entering the intersection and wait behind the stop line, crosswalk, or intersection.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  25. When may you turn right at a red traffic light?

    A red car with right-side turn signal lamps lit amber, some distance before a white line across its lane and white bars across the road, beside a red traffic light.
    • Only if no other vehicle is visible
    • Never, in any situation
    • After coming to a complete stop, unless posted otherwise
    • After slowing down, if you yield to pedestrians
    Show answer

    Correct answer: After coming to a complete stop, unless posted otherwise

    Utah allows a right turn on red after a complete stop unless a sign prohibits it.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  26. What should you do at a flashing red traffic light?

    A traffic signal flashing red
    • Slow down and proceed with caution through the intersection
    • Stop and look both ways before entering the intersection
    • Stop only if other vehicles are present
    • Proceed if the way is clear on your right
    Show answer

    Correct answer: Stop and look both ways before entering the intersection

    A flashing red light is treated as a stop: stop and look both ways before you enter.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  27. What does a red arrow light for a right turn mean?

    A traffic signal showing a steady red arrow pointing right, with the yellow and green right-arrow lenses below it dark.
    • You may turn right after yielding to pedestrians
    • You may turn right after a complete stop
    • Right turns are prohibited, but you may turn right once the road is clear
    • Right turns are prohibited; stop and remain stopped until a signal to proceed is shown
    Show answer

    Correct answer: Right turns are prohibited; stop and remain stopped until a signal to proceed is shown

    A red right-turn arrow prohibits right turns until an indication to proceed appears.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  28. You are stopped by a red left-turn arrow that does not change, and it is safe. When may you turn left?

    • When you are on a one-way street turning onto a one-way street
    • When you are turning from a two-way street onto a one-way street
    • When you are turning from a one-way street onto a two-way street
    • When oncoming drivers wave you through
    Show answer

    Correct answer: When you are on a one-way street turning onto a one-way street

    The handbook allows this turn only for a driver stranded by a red left arrow, from a one-way street onto a one-way street, when it is safe.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  29. A traffic light is green, but a police officer at the intersection tells you to stop. What must you do?

    A four-way intersection from above: a person in a navy cap and bright yellow-green vest with white gloves stands in the middle, arms at 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.
    • Go, because the light has priority
    • Slow down and go if the way is clear
    • Stop
    • Stop only if other vehicles are near
    Show answer

    Correct answer: Stop

    Always obey a police officer at an intersection regardless of what the traffic lights indicate.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  30. You want to go straight, but a police officer at the intersection indicates that you must turn. What are you required to do?

    A four-way intersection from above: a person in a navy cap and bright yellow-green vest with white gloves stands in the middle, arms at 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.
    • Go straight if the light is green
    • Turn as the officer indicates
    • Go straight if no vehicles are coming
    • Stop and wait for the officer to wave you straight
    Show answer

    Correct answer: Turn as the officer indicates

    Instructions from an officer override both the signal and your plans, so you must turn.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  31. What must you do at an intersection where the traffic lights are not working, unless a peace officer directs otherwise?

    • Slow down and go ahead if you see no traffic coming from either side
    • Stop completely and yield to any vehicle on your left
    • Treat it as a yield sign and keep your speed
    • Stop completely before entering and yield to any vehicle on your right
    Show answer

    Correct answer: Stop completely before entering and yield to any vehicle on your right

    Dark signals require a complete stop first, then yielding the right-of-way to any vehicle on the right.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  32. Which left-turn signal is described in the handbook as "protected"?

    • A green arrow
    • A solid green light
    • A flashing yellow arrow
    • A flashing red light
    Show answer

    Correct answer: A green arrow

    The handbook calls the green arrow protected, while the solid green light and flashing yellow arrow are permitted signals.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 46 · Open this page in the manual

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  33. If a traffic-control signal fails to detect them, what must a motorcycle, moped or bicycle operator aged 16 or older do before proceeding through the intersection?

    • Come to a complete stop and wait at least 30 seconds
    • Come to a complete stop and wait at least 90 seconds
    • Come to a complete stop and wait at least 60 seconds
    • Slow down and proceed when no vehicles are in sight
    Show answer

    Correct answer: Come to a complete stop and wait at least 90 seconds

    A rider 16 or older may go through after stopping and waiting at least 90 seconds, if no vehicles or pedestrians are approaching or present.

    Source: ⁨Utah Driver Handbook (2026 edition (new 2026 laws effective May 6, 2026))⁩, page 82 · Open this page in the manual

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