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South Dakota: Traffic signal decisions

South Dakota: Traffic signal decisions

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Question 1 of 8
  1. 1. You intend to turn right at a circular red light. No sign or officer prohibits it. What must you do first?
  2. 2. A left-turn arrow is flashing yellow while an oncoming car approaches. What is required?
  3. 3. You approach a flashing red traffic light. What should you do?
  4. 4. Your approach has a flashing yellow traffic light. What is the appropriate response?
  5. 5. All traffic signals at an ordinary intersection are dark. No officer or temporary control directs traffic. How must you treat the intersection?
  6. 6. The circular signal changes from green to steady yellow before you reach the intersection. You can stop safely before entering. What should you do?
  7. 7. A driver on a one-way street wants to turn left on red into another one-way street. Which statement accurately describes South Dakota's local-option rule?
  8. 8. A steady red arrow controls your intended right turn in South Dakota. What should you do?
Review all 8 questions with answers
  1. You intend to turn right at a circular red light. No sign or officer prohibits it. What must you do first?

    Correct answer: Stop completely, then yield to pedestrians and conflicting traffic before turning if safe.

    South Dakota’s stated right-on-red exception requires a complete stop and yielding. Rolling through is not enough.

    Source: South Dakota Driver License Manual, current catalog-linked edition, REVISED 11/2024; printed/physical page 32: Traffic Signals — RED. Text reviewed September 29, 2026. ↗

  2. A left-turn arrow is flashing yellow while an oncoming car approaches. What is required?

    Correct answer: Yield and turn only when the path is safely clear.

    A flashing yellow arrow permits a yielding, unprotected turn. It is not the same as a green protected-turn arrow.

    Source: South Dakota Driver License Manual, current catalog-linked edition, REVISED 11/2024; printed/physical page 32: Traffic Signals — YELLOW flashing arrow. Text reviewed September 29, 2026. ↗

  3. You approach a flashing red traffic light. What should you do?

    Correct answer: Stop completely, then proceed cautiously after yielding as required.

    Flashing red requires a full stop. After stopping, use the applicable right-of-way rules and enter only when safe.

    Source: South Dakota Driver License Manual, current catalog-linked edition, REVISED 11/2024; printed/physical page 32: Traffic Signals — flashing RED. Text reviewed September 29, 2026. ↗

  4. Your approach has a flashing yellow traffic light. What is the appropriate response?

    Correct answer: Slow down and proceed with caution while checking the intersection.

    Flashing yellow calls for caution, not a guarantee of a clear path. It differs from flashing red’s full-stop instruction.

    Source: South Dakota Driver License Manual, current catalog-linked edition, REVISED 11/2024; printed/physical page 32: Traffic Signals — flashing YELLOW. Text reviewed September 29, 2026. ↗

  5. All traffic signals at an ordinary intersection are dark. No officer or temporary control directs traffic. How must you treat the intersection?

    Correct answer: Treat it as an all-way stop, then proceed under the normal yielding rules.

    At an ordinary intersection facing a completely unlighted traffic signal, stop as at a stop sign, then yield and proceed only when safe.

    Source: South Dakota Driver License Manual, current catalog-linked edition, REVISED 11/2024; printed/physical page 32: Traffic Signals — out of operation. Text reviewed September 29, 2026. ↗

  6. The circular signal changes from green to steady yellow before you reach the intersection. You can stop safely before entering. What should you do?

    Correct answer: Stop rather than accelerate into the intersection.

    Stop before entering on steady yellow if you can do so safely. If you cannot stop safely, proceed carefully through.

    Source: South Dakota Driver License Manual, current catalog-linked edition, REVISED 11/2024; printed/physical page 32: Traffic Signals — steady YELLOW. Text reviewed September 29, 2026. ↗

  7. A driver on a one-way street wants to turn left on red into another one-way street. Which statement accurately describes South Dakota's local-option rule?

    Correct answer: A municipality may authorize that movement by ordinance; do not assume it is allowed everywhere.

    The statute lets municipalities authorize a stopped, yielding left turn from one one-way roadway onto another. It is not a blanket statewide permission.

    Source: Current South Dakota Codified Laws §32-28-4.1. Reviewed September 29, 2026. ↗

  8. A steady red arrow controls your intended right turn in South Dakota. What should you do?

    Correct answer: Stop and wait until the red arrow goes out and a green light or arrow permits movement.

    The handbook distinguishes a red arrow from a circular red light: do not travel in the arrow's direction until the permitted indication appears.

    Source: South Dakota Driver License Manual, current catalog-linked edition, REVISED 11/2024; printed/physical page 32: Traffic Signals — RED arrow. Text reviewed September 29, 2026. ↗

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Question reference: sd-car-020

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