Which Came First, the Traffic Light or the Automobile?

In 1868, long before the automobile became a common sight on city streets, the world's first traffic light was installed in London.

The light placed near the British Houses of Parliament to help pedestrians cross a busy street without the danger of being run over by a horse drawn vehicle. It consisted of a swinging arm that controlled traffic by day and red and green lights that controlled traffic at night.

A few years after it was installed, the world's first traffic light blew up, killing a nearby policeman!

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