When advance-warning signs are required due to obstruction on the roadway, how far should the closest sign be placed on low-speed roads?

The requirement for placing advance-warning signs on low-speed roads typically emphasizes the need for sufficient notice to drivers about potential hazards or obstructions ahead. In general, placing the advance-warning signs at a distance of 200 feet allows drivers adequate time to react and adjust their speed or maneuvers in a safe manner before they encounter the obstruction.

This distance is considered effective for providing the necessary warning while accommodating the reduced stopping distances associated with lower speeds, as well as ensuring visibility and comprehension of the signage. The goal is to enhance roadway safety by giving drivers ample opportunity to notice the signs and respond appropriately, thereby minimizing the risk of accidents.

Other distances, such as 50 or 100 feet, may not provide enough warning for drivers to react appropriately to hazards, while 300 feet could be excessive for low-speed roads, potentially leading to confusion or a cluttered roadway environment without a corresponding benefit.