What does a red arrow signal indicate?

Answer: C — Do not proceed in the direction of the arrow

A red arrow signal indicates that drivers must not proceed in the direction of the arrow. This signal serves as a clear indication that the movement in that direction is prohibited, similar to a standard red traffic light. It is crucial for maintaining safety on the road by preventing conflicts with other vehicles and pedestrians that may have the right of way at that intersection. The red arrow communicates a strong message to wait and stop until the signal changes to allow movement. This is essential for ensuring that all drivers are aware of the prohibition against turning or moving in the direction indicated, thus helping to prevent accidents.