What type of signs convey commands such as stop, yield, do not enter, or wrong way?

Red signs convey commands such as stop, yield, do not enter, or wrong way because they are specifically designed to alert drivers to take necessary actions for safety. The color red is universally recognized as a signal for caution or prohibition in traffic signage. For example, a stop sign instructs drivers to completely stop their vehicles at an intersection, while a yield sign indicates that a driver must slow down and give way to other vehicles or pedestrians. This color coding helps ensure that these critical safety commands are easily visible and understood by drivers at various distances and under different conditions.

In contrast, yellow signs are typically used for warning signs that indicate caution or alertness about potential hazards ahead, while green signs generally provide information regarding directions or distances, such as highway exit signs. Blue signs often convey information related to services available, such as hospital or rest area signage. Therefore, the use of red for command signs is essential for maintaining clear communication and ensuring safe driving practices.