What should a driver do when facing a green arrow?

When a driver encounters a green arrow, it indicates that they can proceed in the direction of the arrow provided they are in the appropriate lane. The green arrow signifies that the specific movement (such as turning left or right, depending on the direction of the arrow) is permitted and has the right of way. This means that vehicles may move forward without stopping, as long as they are obeying any additional traffic signals or signage that may be present and ensuring that the road is clear of conflicting traffic or pedestrians.

The other options ignore the implications of the green arrow. Stopping or waiting for the light to change does not align with what the green arrow represents, as it grants permission to proceed. Turning left regardless of lane could lead to dangerous situations if a driver is not in the correct lane to make that turn. Lastly, yielding to oncoming traffic is not necessary when the driver has a green arrow, which indicates they can proceed without such concerns.