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Keywords: Wireless train network, hybrid technology network, wheel bearing sensor, train health monitoring, wireless sensor network, ad hoc network, freight train network
Keywords: Track circuits, shunt, shunting
Keywords: European Union, EU, standards, regulations, codes, recommended practices, rolling stock, high speed rail
Keywords: Railroad wireless communications, software-defined radio, technology survey, system requirements specification (SysRS), component requirements, trade-off analysis
Keywords: Cyber security, communications, risk, connected railroad