The low-altitude economy is an emerging industry that has gained significant attention in recent years.It was first included in the government work report in 2024 and has become one of the nation's important strategic industries.The potential for the development of the low-altitude economy is immense,which is expected to be a new trillion-yuan industry track for China in the future.This paper aims to explore the development path of the"low-altitude economy"as an emerging strategic industry,thinking about how to use advanced Beidou Navigation Satellite System(BDS)to construct a low-altitude 3D traffic light system under this context.The goal is to promote the standardized and intelligent development of the low-altitude economy,providing theoretical support and practical guidance for its sustainable development.