From: ce11son@yahoo.ca   
      
   On Sun, 13 Dec 2015 16:55:28 -0500, "New Haven"    
   wrote:   
      
   >"Michael Finfer"  wrote in message   
   >news:hEXay.29191$dt1.2169@fx41.iad...   
   >> On 12/12/2015 12:30 AM, hmmarcus56@gmail.com wrote:   
   >>> Why do they need to blow that horn at midnight 25 times? Disgusting. The   
   >>> train is fine but the horns are disgusting. Would someone walk in front   
   >>> of a passing c@r? No need to hit horn so many times   
   >>>   
   >>   
   >> Blowing the horn for crossings is required by Federal regulation unless a   
   >> quiet zone is in effect.  Four blows, long-long-short-long, for each   
   >> crossing.  They are not allowed to stop.   
   >>   
   >I could be mistaken, but isn't it short-short-long-short?   
   >   
   LLSL :-   
   https://en.wikipedia.org/wiki/Train_horn#United_States   
   although the description alongside doesn't actually seem to say the   
   pattern is officially prescribed rather than the duration.   
   (recordings further down the page)   
      
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