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Vacancy display light / Vacancy display light

Vacancy display light
Vacancy display light

This vacancy display light can help passengers quickly find a seat. The train ticket holders enters the car ,the vacancy display light is turned off,Do not wait until all the people sitting,before they can sitting on the seat.

University

Jiangxi University of Finance and Economics

Jiangxi University of Finance and Economics
Nanchang, China

Qizhen huang,
Jiangxi University of Finance and Economics

Tian Wu ,
Jiangxi University of Finance and Economics

Rifeng Mao,
Jiangxi University of Finance and Economics

Xin Yan,
Jiangxi University of Finance and Economics

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