What is RailEye? It is an optical sensor system for defining and categorising the friction level on the rail surface out in the field. It is a technology developed in part within the In2Track3 project and is expected to reach a TRL level of 7 (tested in operational environment).

Successful field test have been carried out, with the aim to investigate the possibility of real time monitoring of contaminants on the rail with an optical sensor mounted on train. The tests were carried out by Luleå university of technology for Trafikverket with the help of Malmbanansvänner.