What unique features of the Blue Stripe signage enhance its visibility?

The choice highlighting reflective materials and LED lighting as unique features of the Blue Stripe signage is particularly insightful because these elements significantly enhance visibility, especially in the varied lighting conditions present at an airport. Reflective materials work by bouncing light back to its source, making signs easier to see during night time or in low-light situations. This quality ensures that travelers can quickly locate signage even from a distance or when light conditions change.

Additionally, LED lighting provides brightness and clarity, making the signs more readable and noticeable from afar. Unlike traditional lighting, LEDs can be designed to be brighter, more energy-efficient, and longer-lasting, which is crucial for the constant operation of airport environments. Together, these features ensure that important information is conveyed effectively, improving wayfinding and overall passenger experience within one of the busiest airports in the world.

Other options, while potentially interesting, do not focus on these practical applications of visibility and clarity that are critical in a fast-paced environment like O'Hare Airport.