--- In [email protected], "Ed" <loize...@...> wrote:
> >  The directional speakers "aim" sound only at the roadway approaching the 
> > tracks.  Thus, car drivers hear the recorded horn clearly, but adjacent 
> > houses hear nothing.  

  So why does it have to be a badly recorded train horn, why not just a loud 
"here comes a train, stay off the tracks" announcement? ...dave



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