From what distance should Class A and C lighting be visible at night?

Class A and C lighting should be visible at a distance of 3000 feet at night to ensure adequate safety and visibility on roadways where traffic control devices are in use. This distance is established to provide drivers with enough time to respond to the upcoming conditions, especially in low-light situations. Having visibility at this extended distance allows for improved reaction times, thereby enhancing overall roadway safety for both motorists and flaggers present in the work zone. In contrast, lesser distances would not give drivers sufficient warning of potential hazards or changes in traffic conditions, which can lead to dangerous situations. Therefore, achieving visibility at 3000 feet is crucial for effective traffic management during nighttime operations.