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The priority seat in public transportation can’t be make good use of. The priority seat is vacant even in rush hours; the reasons of people don’t use it which is afraid of to be discussed by others. People won’t ask for it, even they are in need. The gold of the device of silent priority seat is let people could be communicate by only push the button instead of asked for, to avoid an awkward situation which might be happened during asking.
kuo shing chen,