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This is a barrier free design to solve the problem of goingout for the blind people .
There are two magnetic body,one is on the bottom of the blind stick,and the other is on the curbside.
When the traffic light is green,and the time remained is enough to cross the road safely,the two magnetic body give repulsion to each other,the two attract each other otherwise.It is the gravitation and the replusion that guidesthe blind to cross the road properly
To solve the problem ,that it is difficult to distinguish the way with voice traffic light for the blind people ,and to reduce the the noise pollution in the city,I do the design.