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Re: Whistles and Horns NNG

January 20, 2009 12:57PM
IIRC the whistle could not be heard at speed (100 MPH) so an air horn was added to increase the safety margin. This has something to do with the doppler effect of a passing train. The coast line had marked locations when to use the whistle or the air horn.
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Whistles and Horns NNG

Dale January 19, 2009 04:09PM

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