What does MIRL denote in runway lighting?

MIRL stands for Medium Intensity Runway Lights, which are a type of lighting system used to enhance the visibility of runways during low-light conditions, such as nighttime or in poor weather. These lights provide a balance between visibility and energy consumption, making them suitable for many airports, particularly those that are not busy international hubs.

Medium Intensity Runway Lights are designed to be bright enough to be easily seen by pilots but not so intense that they cause glare or discomfort. This makes them particularly effective for runway operations where pilots need clear and defined lighting to assess their approach and landing.

Understanding the function of MRTLs within airport lighting systems is essential for maintaining safety and efficiency during operations.