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It is dark at night.Taxi driver is hard to look for the passage,sometimes passenger will miss taxi.
TATA card could solve this problem.It is using total reflection principle.taxi light could be reflect back and driver can easy to see the passage.It also can make people safely in the dark, because every driver can see it.
Xihua University
Chengdu, China
Xihua University
Chengdu, China
Tao Tang