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speed behind / car

speed behind

When the people drive, the driver behind some cars can not know or watch actually how much speed the infront car is kept. So when the infornt car stopped suddenly, the behind car hit the infront car. Sometime cause of this reason in the high way it cause big accident. This behind speed show the behind and other driver how much speed is kepted. So any other driver can drive more safe


Hanyang cyber university

Hanyang cyber university
Seoul, South Korea



Deagu, South Korea