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wig-wag device

Definition

wig-wag device rate
(Noun) Any warning device that warns with a wig-wag siren, originally used in railroad grade crossing signal.
Usage: According to FRA data from 2004, there were 215,224 railroad crossings in the United States, of which 1,098 were listed as having 1 or more wigwags as their warning device.


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