MIRL stands for which lighting type?

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Multiple Choice

MIRL stands for which lighting type?

Explanation:
MIRL refers to the brightness category of runway edge lighting, specifically Medium-Intensity Runway Lights. This is the standard term for a mid-level illumination used to outline the runway for pilots under conditions where the lights don’t need to be at high intensity. The other phrasings aren’t standard aviation terminology—minimal intensity would imply a different acronym, manual in-runway lighting isn’t a recognized system, and main illumination isn’t used to describe runway lighting levels. So the best match is Medium-Intensity Runway Lights.

MIRL refers to the brightness category of runway edge lighting, specifically Medium-Intensity Runway Lights. This is the standard term for a mid-level illumination used to outline the runway for pilots under conditions where the lights don’t need to be at high intensity. The other phrasings aren’t standard aviation terminology—minimal intensity would imply a different acronym, manual in-runway lighting isn’t a recognized system, and main illumination isn’t used to describe runway lighting levels. So the best match is Medium-Intensity Runway Lights.

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