What does a vertically raised arm indicate to drivers?

A vertically raised arm signals to drivers that everyone must stop. This gesture is commonly used by traffic officers and indicates that traffic needs to cease movement immediately for safety reasons. It is especially important at intersections or in situations where there may be pedestrians or other vehicles entering the roadway. Recognizing this signal helps ensure that drivers understand when to halt their vehicles, thereby enhancing road safety and preventing accidents.

This arm position is contrasted with other signals that may allow traffic to proceed or indicate different rules for pedestrians. Understanding the significance of this particular gesture is crucial for responsible driving and adherence to traffic regulations.