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This is a design for hard of hearing people,which make them travel more convenient.When they travel by subway they couldn’t hear the voice prompt,especially when there are a lot of people crowd in the subway,they can’t see the prompt board.New touch sign on the roof of the carriage.It flashing blue light when subway is arriving to the station it is also convenient to listen to music and who is on the phone. Make the station more clear at a glance.
Dalian Minzu University
Dalian Nationalities University