What is the minimum width requirement for stop/slow retroreflective paddles?

The minimum width requirement for stop/slow retroreflective paddles is 18 inches. This standard is set to ensure that the paddles are easily visible and recognizable by drivers from a sufficient distance, allowing for safe and effective communication of traffic control measures. The size plays a critical role in making sure that the paddles can be seen clearly, particularly in various weather conditions and at different times of day. The reflective material further enhances visibility, but the size alone is crucial in conveying the necessary commands to drivers. By adhering to this minimum width, flaggers can significantly improve safety in work zones and other areas where traffic needs to be controlled.