What does a green arrow indicate to a driver?

A green arrow serves as a clear indication to a driver that they can proceed in the direction the arrow points. This signal is typically employed in traffic control to authorize drivers to make a turn where they may otherwise be facing a red signal. The green arrow's presence means that it is safe to move in the specified direction without needing to yield to oncoming traffic or pedestrians in that lane.

Understanding this signal is crucial for drivers as it helps ensure the smooth and safe flow of traffic. While other options may seem plausible, they do not accurately capture the specific permission granted by the green arrow. For instance, saying a driver can "proceed in any direction" or "travel in a straight line only" doesn't reflect the clear and definitive instruction given by a green arrow, which strictly directs movement in the pointed direction only. Similarly, the directive to "turn left immediately" does not encompass the full scope of the green arrow's meaning if it points in a different direction.