Reliability and safety considerations affecting the design of a radar based railway crossing level passage monitoring system

Railway crossing passage systems are designed to provide a barrier for unwanted intrusion on the railway tracks. Nevertheless an increase in incidents due to cars or trucks stuck in between the barriers are happening with higher frequency. Therefore the authors in this paper propose and discuss three potential configurations for undesired barrier intrusion detection system design, based on radar detectors and focussed their attention on the system reliability and safety aspects. In particular, the radar sensor is identified as the critical component and the configurations analysed accordingly.