Answer :
Final answer:
The name for the green lights on either side of the runway centerline marking the beginning of the runway are called Threshold Lights, which help pilots determine the start of the runway and provide safety information.
Explanation:
The green lights arranged both left and right of the runway centerline at an airport, which identifies the runways' threshold, are called Threshold Lights. These lights are significant in aviation as they provide pilots with vital information about the start of a runway especially during conditions of poor visibility. They are typically green when viewed by an aircraft in approach to land, signifying safe space to land, while they appear red to aircraft contemplating departure in the other direction, indicating the end of the runway and that the plane should not proceed.
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