In which city was the very first traffic light installed?

The very first traffic light was installed in London in 1868. This traffic light was designed to control the flow of horse-drawn carriages and pedestrians at intersections. It used gas lamps to signal 'stop' and 'go' and was operated manually by a police officer. Although the design and technology of traffic lights have evolved significantly since then, this initial installation laid the groundwork for modern traffic management systems found in cities around the world today.

While other cities like Los Angeles, Paris, and Berlin may have implemented their traffic control measures in various capacities, none can claim the distinction of housing the first traffic light, which is a notable historical milestone attributed to London.