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Recent trend of railway train development can be characterized in severalaspects : high speed, infortainment, intelligence in driving, and so on. Inparticular, trend of high speed in driving is prominent and competition forhigh speed amongst several techno-savvy countries is becoming severe. Toachieve high speed, engines or motors are distributed over multiple vehicles oftrain to provide increased motive power, while a single engine or motor hasbeen mostly used for conventional trains. Increased speed and more complicatedpowertrain system naturally incur much higher chance of massive accidents. Fromthis perspective, importance of proactive safety control before accident takesplace cannot be over-emphasized. To implement proactive safety control requiressituation-aware integration and transmission of safety information obtainedfrom IoT sensors. Types of critical IoT sensors depend on situationalconditions. Thus, integration and transmission of safety information should beperformed with IoT sensors providing the safety information proper for facedsituation. This brief paper is to devise a methodology how to operate IoTsensor network enabling proactive safety control for railway vehicles and topropose a queue management based medium access control scheme.

Situation-Aware Integration and Transmission of Safety Information for Smart Railway Vehicles