What does a red arrow traffic signal indicate?

A red arrow traffic signal indicates that drivers must stop and cannot proceed in the direction of the arrow. This signal is specifically utilized to control traffic for turning vehicles, allowing for a protected turn lane only when the arrow is green. The presence of a red arrow clearly instructs drivers that they must remain stopped until the signal changes to green, ensuring both safety and orderly traffic flow at intersections.

With a red arrow, it is important to emphasize that this signal applies specifically to turns. A green arrow, conversely, would permit a driver to make a turn into the lane without yielding to oncoming traffic or pedestrians. Therefore, the specific function of the red arrow is to reinforce the requirement of stopping, as opposed to merely yielding or proceeding with caution, which are more applicable to different signals such as yield signs or general traffic lights. Understanding this distinction is crucial for ensuring compliance with traffic laws and promoting safe driving behaviors.