General Knowledge Quiz
When Was The First Traffic Signal Invented?
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The first traffic signal was invented in 1868 by JP Knight. He was a railway signaling engineer. The traffic signal was installed outside the Houses of Parliament. The signal looked like any railway signal of the time. It had semaphore arms and red-green lamps and was operated by gas. However, it exploded and killed a policeman.
Question about Road Signs
A road sign arning against pedestrians focusing on their smartphones is pictured on February 2, 2016 near the old town in Stockholm. / AFP PHOTO / JONATHAN NACKSTRAND (Photo credit should read JONATHAN NACKSTRAND/AFP/Getty Images)
When Was The First Traffic Signal Invented?
- 1865
- 1868
- 1866
- 1867
