Final answer:
A green steady arrow in traffic signals allows vehicles to proceed in the arrow's direction after yielding, improving traffic flow and safety.
Step-by-step explanation:
A green steady arrow in traffic signals indicates that vehicles may proceed only in the direction of the arrow after yielding to other vehicles and pedestrians that may have the right-of-way. This type of signal is meant to promote the flow of traffic and enhance safety by providing clear guidance for drivers turning in a specific direction. For pedestrians, a green arrow facing drivers suggests that they should remain alert and cautious, as vehicles may be turning across their path, but it does not indicate that it is safe for them to cross.