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Showing posts with label Intersection. Show all posts
Showing posts with label Intersection. Show all posts

Sep 4, 2017

At what intersection was the world's first electric traffic signal installed in 1914?


Step 1 : Introduction to the question "At what intersection was the world's first electric traffic signal installed in 1914? "



The world's first, manually operated gas-lit traffic signal was short lived. Installed in London in December 1868, it exploded less than a month later, injuring or killing its policeman operator