What is signified by a green arrow signal light?

A green arrow signal light specifically indicates that a driver is permitted to turn in the direction of the arrow. It serves as an indication that the lane or direction indicated by the green arrow is clear for movement, thereby allowing the driver to proceed with confidence. This light provides clear communication that the intersection is safe for turning, reducing uncertainty for drivers about their movements and enhancing traffic flow.

In this context, while the other choices address important traffic behaviors, they do not apply to the meaning of a green arrow. For instance, stopping for pedestrians generally applies to situations where traffic signals or signs require yielding to foot traffic, which does not negate the green arrow's allowance for turns. Yielding to oncoming traffic typically pertains to left turns at intersections, particularly when there are no specific arrow signals indicating right of way. Lastly, the requirement for all traffic to stop is indicated by red signals, not green arrows, which allow movement instead.