Portal:Trains/Featured article/Week 24, 2005

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A wigwag signal in Redlands, California

Wigwag is the nickname given to a type of early 20th century railroad grade crossing signal, so named due to the pendulum-like motion it used to signal the approach of a train. It is generally credited to Albert Hunt, a mechanical engineer at Southern California's Pacific Electric interurban streetcar railroad who invented it in 1909 out of the necessity for a safer railroad grade crossing.

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