We come across them everyday and without them our world would be a lot more chaotic. They keep us safe and sometimes also drive us to the edge.
First put into place on the corner of Euclid Avenue and East 105th Street in Cleveland, Ohio, on Aug 5 in 1914, the world’s first electric traffic signal was based on a design by James Hoge, who received a US patent for his “Municipal Traffic Control System” in 1918. It comprised four pairs of red and green lights that served as stop-go indicators, each mounted on a corner post.