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Traffic signals Part 2

Posted by aditya | 2:39 PM | | 0 comments »



In the UK, traffic signals first became known in 1868. In 1918 in New York introduced the three color traffic signal is run manually. In England, in 1926 introduced the traffic signal lights with two colors, namely red and green, with a fixed time period.

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Title Post: Traffic signals Part 2
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Author: aditya

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