Trimble 4D Control Rail is a software solution designed to enhance rail monitoring efficiency. It streamlines the process of collecting and analyzing track geometry data, eliminating manual calculations and providing real-time insights into track stability and movement. The software leverages both geodetic and geotechnical data to detect and monitor changes in track geometry, allowing for proactive decision-making and informed maintenance. It integrates with a variety of Trimble hardware, including total stations and GNSS systems, to offer comprehensive monitoring capabilities.