What does a Wrong Way sign communicate to drivers?

The Wrong Way sign is designed to clearly alert drivers that they are approaching a section of roadway where they should not be driving; it indicates that they are potentially heading into oncoming traffic. This sign is characterized by a red rectangle displaying the words "Wrong Way," which is visually striking and indicative of a serious hazard. The use of red is universal for prohibitive signs, making it highly effective in conveying the urgency of the message. Ensuring drivers receive this clear and direct warning helps prevent accidents and enhances road safety, particularly at entrances to one-way streets or highways.

Other options do not adequately communicate the same sense of danger or clarity. For example, a green rectangle with an arrow usually indicates permissible direction or guidance, while a yellow warning sign typically signals caution but does not convey the immediate risk associated with driving the wrong way. Similarly, a circular sign with a red border generally provides regulatory information that could indicate restrictions, but it lacks the specific messaging associated with the Wrong Way sign.