Multiple choice general knowledge science & technology

when were Traffic lights introduced?

  1. 1865

  2. 1878

  3. 1868

  4. 1875
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first traffic lights were introduced in London in 1868, installed outside the Houses of Parliament. They were gas-lit and operated manually. This predated the first electric traffic lights in the United States (1914). The year 1868 is correct.

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