In 1923, the first mechanical traffic light using electricity was installed in Paris at the intersection of Boulevard de Strasbourg and Grands Boulevards. The traffic lights that we now know were born and became the norm throughout the world. ![]() Detroit and New York added yellow between red and green in 1920. The world had to wait 46 years until electricity use became widespread before the first dual-colored traffic light, using this new energy, was installed in Cleveland in the United States. Less than two months later, the traffic light exploded, killing the police officer who worked the signs. The post was topped with a gas-lit semaphore to ensure visibility. The system was composed of two mobile signs attached to pivoting arms that were manipulated by a lever. It was installed at Parliament Square in London. Let’s take a look at a hundred and fifty years of history! The First (Disastrous) Trial in Englandĭecember 10, 1868: the official birth date of the world’s first traffic light. While their presence in city centers is now being questioned, they still fulfill an essential function by regulating the competing flows of traffic at an intersection. ![]() Red, green, yellow… three-color traffic lights are now a daily part of every person’s life.
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