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About: Wigwag (railroad)     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:TopographicPoint108664443, within Data Space : dbpedia.org associated with source document(s)

Type: personyago:WikicatLevelCrossingsyago:Intersection103581125yago:Junction103605722yago:LevelCrossing103659122yago:Location100027167yago:Object100002684yago:PhysicalEntity100001930yago:Point108620061yago:YagoGeoEntityyago:YagoLegalActorGeoyago:YagoPermanentlyLocatedEntityyago:TopographicPoint108664443 New Facet based on Instances of this Class

Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum-like motion that signaled the approach of a train. The device is generally credited to Albert Hunt, a mechanical engineer at Southern California's Pacific Electric (PE) interurban streetcar railroad, who invented it in 1909 for safer railroad grade crossings. The term should not be confused with its usage in Britain, where "wigwag" generally refers to alternate flashing lights, such as those found at modern level crossings.