What color lights are associated with the runway at O'Hare?

The color of lights associated with runways at airports, including O'Hare, is white. These white lights are part of the runway edge lighting system, which helps pilots visually identify the edges of the runway during takeoff and landing, particularly in low visibility conditions. The use of white lights for runways is standard across airports to ensure consistency and safety in aviation operations.

In contrast, red lights typically indicate the approach to a runway or can signify a warning or hazard. Green lights are often used for taxiways or as part of approach lighting but are not associated with the runway itself. Blue lights generally designate taxiway edges, not the runway. Therefore, white lights are essential for clearly outlining runways, which reinforces their importance in the safe navigation of aircraft.