A flashing green arrow with a steady red light means

- turn left ✓
- no left turn at any time
- the cross-street is a one way street in the direction of the arrow
- wait until the red turns green before turning left
Answer: A. turn left
A flashing green arrow with a steady red light means you may turn left, while traffic going straight must stop for the red light.
Why this is the answer
The handbook lists this exact combination under traffic signals: the flashing green arrow allows the left turn, and drivers going straight through must obey the red light. It is the advance left-turn setup, where your turn gets its own protected phase while the through movement is held back. Once the arrow changes to yellow, you stop and wait for the next green arrow before turning. So the signal is giving you permission to make the left turn, not telling you to sit and wait.
Why the other answers are wrong
- B. no left turn at any time — The handbook says the opposite here, because the flashing green arrow with a steady red is exactly the situation in which a left turn is allowed.
- C. the cross-street is a one way street in the direction of the arrow — The passages never tie this signal to the cross street being a one-way street; the signal tells you which movement you may make, not how the cross street is laid out.
- D. wait until the red turns green before turning left — Waiting for the red to turn green is wrong, since the left turn is already permitted during the flashing green arrow while through traffic waits at the red.
Remember it
Treat the flashing arrow as permission for that one movement only, while the red light holds back everyone going straight.