why do blinking yellow arrows exist on traffic lights?

Question

(USA specific) When a traffic light turns green and there’s a left turn lane, why does the light need the blinking yellow arrow? Isn’t it already implied that you can turn left as long as you yield to oncoming traffic? I understand why a red and green arrow are necessary for a turning lane, but the yellow seems redundant.

In: 6

Answer 1

Rule 2 forbids straightforward questions.