Aerialtronics and Applanix collaborated to revolutionize rail infrastructure surveying with innovative geospatial technologies. By leveraging UAVs equipped with advanced solutions from Trimble and Phase One, traditional surveying methods underwent a significant transformation. Challenges such as access restrictions and costly ground control points were successfully addressed. The outcome was a groundbreaking solution that achieved sub-5mm precision without disrupting rail operations, presenting considerable value to the rail industry.