What is the minimum visibility distance for a flagger's sign when used in work zones?

The minimum visibility distance for a flagger's sign when used in work zones is 300 feet. This distance is critical because it ensures that drivers have enough time to see the sign, comprehend the message, and react safely to the changed conditions ahead. Proper visibility helps minimize the risk of accidents and enhances safety for both drivers and workers in the vicinity of the work zone.

The 300-foot distance is established for various reasons, including maintaining a safe stopping distance and accommodating the average speed of approaching vehicles. By adhering to this guideline, agencies can improve the effectiveness of traffic control measures and help ensure safer work environments. This distance is part of the broader set of standards intended to protect highway workers and traveling public alike.