From: jock@soccer.com   
      
   On Thu, 19 Jun 2014 07:48:46 -0700 (PDT), hancock4@bbs.cpcn.com wrote:   
      
   >On Wednesday, June 18, 2014 6:00:19 PM UTC-4, Marc Van Dyck wrote:   
   >   
   >> A second possible usage is at crossings between different transit   
   >> systems, for example a tram line and a trolleybus line.   
   >   
   >Yes, the article mentioned that situation specifically, and gave Portland as   
   an example.   
   >   
   >Of course, long ago they managed to have complex overhead where a trolley and   
   trackless line crossed or turned a corner:  (Wyoming Ave, Rts 47, 50, and 75,   
   Phila)   
   >   
   >http://www.nycsubway.org/perl/show?13454   
   >   
   >http://www.nycsubway.org/perl/show?13546   
   >   
   >   
   >   
      
   And present-day San Francisco where trolley bus routes cross the F   
   Market and Wharves Line.   
      
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