How far should Class A and C lighting be visible at night?

Class A and C lighting are designed for high visibility at night, particularly in situations where safety is paramount, such as in construction zones or areas with heavy traffic. The requirement for Class A and C lighting to be visible at a distance of 3000 feet ensures that drivers have ample warning of potential hazards ahead. This visibility distance allows for sufficient reaction time, enabling drivers to make informed decisions to slow down or change lanes, thereby reducing the risk of accidents.

The visibility standard is established based on various factors, including vehicle speed, road conditions, and the typical response time of drivers upon noticing warning lights. A distance of 3000 feet is significant, as it provides an early alert to drivers, enhancing safety for both the workers on-site and passing motorists.