The challenge in rail transport is similar to that of swap bodies. What is needed is a maintenance-free locating solution that provides unrestricted short-cycle visibility to your railcars and locomotives, enabling performance measurement, entry and exit alarms, and sensor reporting. In order to have a future-oriented and competitive rail fleet, it is necessary to rely on state-of-the-art sensor and radio technology. In addition, a robust unit with special coating is required as protection against dirt from the overhead lines.