Upcoming railway Traffic Management Systems, supported by advanced communication architectures are expected to contribute to higher safety levels in the railway transport service. In the last few years, railway communication architectures have migrated from a juxtaposition of different, and mostly proprietary, technological solutions, each of them addressing the particular requirements of a specific railway IT service, to a unique and integrated telecom open architecture based on GSM-R. However, several limitations have started to appear on GSM-R’s horizon when facing the emerging and future railway communication needs. Within this context, the following target scenario from the UIC (Union Internationale des Chemins de Fer) comes out: an European Railway IP network. This research work addresses a step further by promoting an European Railway Ethernet over IEEE802.16 transport network as a bearer for information, telephony and mobile telecom applications. In the telecom arena, the new emerging 4th generation mobile communication technologies have shortened the existing gap on high transmission data rate technologies for the high mobility scenario. One of these emerging technologies is the IEEE802.16 family of standards, commonly known as the WiMAX technology.