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London Installs Early Traffic Signals

Early traffic signals began operating outside London's Parliament on December 10, 1868.

Published · Updated · 1 min read

The Event

Early traffic signals began operating outside London's Parliament on December 10, 1868. The system combined semaphore arms with gas-lit signals.

The Wider Story

The installation addressed congested horse-drawn traffic and pedestrian crossings. It required operation and technology quite different from modern electric lights.

Putting the Event in Perspective

It was not a fully automatic electronic traffic system.

Reading the Historical Record

A period image should show Victorian street vehicles and the original signal concept rather than modern red-amber-green hardware.

About the Historical Recreation

The accompanying visual is an illustrative reconstruction: a Victorian London junction with horse-drawn vehicles and an early gas-lit semaphore traffic signal. It is not authentic archival footage, an eyewitness record or additional evidence for the event.

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