Which light signal indicates the presence of a lighted heliport?

The presence of a lighted heliport is indicated by a green, yellow, and white rotating beacon. This specific combination of colors is widely recognized as a standard for heliport identification. The green signal typically indicates a clear approach path for helicopters, while the yellow light serves as an alert signal, and the white light can be used for general visibility and identification of the heliport's location.

This beacon is specifically designed to be distinctly visible from the air, ensuring pilots can easily locate the landing area from various altitudes and distances. The rotating nature of the beacon adds to its visibility, making it more recognizable against other lights that could signal different types of landing zones. This clarity in signaling is essential for the safety and efficiency of air travel, particularly in emergency and trauma-related situations.