This green arrow on a lane use control signal means:

You may use this lane.
No traffic is allowed in this lane.
You have the right-of-way.
You must merge into this lane.
The Correct Answer and Explanation is :
The correct answer is: You may use this lane.
Explanation:
A green arrow on a lane-use control signal indicates that the driver is permitted to use the lane that the arrow is pointing to. These signals are commonly used on highways, roadways, or intersections where traffic flow needs to be regulated in specific lanes. The green arrow serves as an explicit indicator that the lane is open for use, which contrasts with other signals that may show red, yellow, or even flashing arrows to indicate restrictions or warnings.
The primary function of these signals is to ensure safety and efficiency in managing the movement of vehicles. When a green arrow is displayed, it allows drivers to proceed in the designated direction or lane, usually in cases of dedicated turn lanes, express lanes, or during times when traffic flow needs to be controlled for specific purposes (such as managing congestion or allowing for lane shifts).
This type of signaling is especially useful at intersections or areas with variable traffic patterns, where certain lanes might be open during specific times, such as during rush hours. For instance, during a busy commute, certain lanes may be designated for use by vehicles going in a particular direction, and the green arrow confirms that drivers can legally enter that lane.
It’s important to note that this green arrow does not necessarily indicate that you have the “right-of-way” in a broader context (for example, over pedestrians or other vehicles in an intersection). Instead, it specifically grants permission to use the lane to which the arrow applies.
In conclusion, a green arrow in lane-use control signals means you are authorized to use that lane, and it is essential to remain aware of other traffic signs, signals, and conditions to ensure safe driving.