From: ahk@chinet.com   
      
   Stephen Sprunk  wrote:   
   >On 02-Jan-16 16:36, Adam H. Kerman wrote:   
   >>Stephen Sprunk  wrote:   
   >>>On 02-Jan-16 14:48, Adam H. Kerman wrote:   
   >>>>Stephen Sprunk  wrote:   
      
   >>>>>I don't see anything in the plans that would indicate a   
   >>>>>crossover or other interlocking involvement on the right   
   >>>>>track, but since the left track does and thus needs a   
   >>>>>two-headed signal, they may have given the right the same for   
   >>>>>consistency.   
      
   >>>>A two-headed signal in which the second head is meaningless?   
   >>>>That's a TERRIBLE idea and just flat out bad engineering. I   
   >>>>certainly hope there are no real world examples of that.   
      
   >>>>You don't see the adverse implications?   
      
   >>>I've seen several examples of two-headed signals where one track's   
   >>>lower head has a fixed red; I assumed it was there for consistency   
   >>>(to match a two-headed signal on the other track) since a lower red   
   >>>can't affect the overall aspect, but perhaps there's another   
   >>>reason.   
      
   >>Nobody erects a signal head to be decorative.   
      
   >Consistency could be considered functional rather than decorative.   
      
   Rising below expectations, as always; you're utterly predictable.   
      
   >>Note: There is a location on the CTA "L" in the Dearborn subway with   
   >>such a signal head. It's where the turnout into the downtown   
   >>terminal for the O'Hare Express service would have been built. No   
   >>special work for the turnout was ever performed, but for no valid   
   >>reason, they erected the signal mast and head before any other work   
   >>was done. The project has been cancelled for years but the signal   
   >>wasn't removed.   
      
   >It costs money to remove things.  If it doesn't have any adverse   
   >effects, why bother?   
      
   Absolutely going out of your way to miss the point: It NEVER should have   
   been installed as the terminal was never built. If it had to be installed   
   because other signal work was being performed, then it should have   
   been immediately disconnected with the signal head turned.   
      
   The rest deleted unread because you've gone into 100% annoying mode.   
      
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