What is the minimum recommended distance for advance warning signs before a work zone?

The minimum recommended distance for advance warning signs before a work zone is 200 feet. This distance is crucial for providing adequate notice to drivers about the upcoming changes in road conditions or potential hazards due to construction or maintenance activities. The 200-foot distance allows drivers sufficient time to react, adjust their speed, and safely navigate through or around the work zone. This precaution is essential for the safety of both the road workers and the motorists, as it helps mitigate the risk of accidents in the area where work is taking place. By implementing this standard, regulatory guidelines promote safer roadway conditions in and around work zones.