On Thursday, October 9, 2014 9:02:33 PM UTC-4, Michael Finfer wrote:   
      
   > One track is regularly taken out of service for entire weekends.  That's    
   > the longest window they can get.  The trains are scheduled so they can    
   > be fleeted each way between A and Bergen without creating delays.   
      
   When we had the tour of the Penna Station control center on a weekend, it was   
   interesting watching the electronic model board* show the fleeting aspect of   
   the weekend trains converging together in New Jersey.   
      
   If NYTM ever offers the Penna Station tour again, I highly recommend it.   
      
      
   *I don't know how many appearances the old model boards of Penna Station were   
   duplicated between the towers and dispatchers.  But the electronic one is   
   fascinating.  In the control center, a huge wall displays the entire railroad   
   from roughly Newark to    
   Jamaica.  (We were not allowed to take any pictures).  On PC screens, one   
   could look at the entire picture, or zoom in to see any particular section.    
   Pretty slick stuff.   
      
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