75647070   
   From: calvin@remove.daxack.ca   
      
   Joseph D. Korman (joekor@earthlink.net) said...   
   >   
   >On 9/1/2014 9:06 AM, Calvin Henry-Cotnam wrote:   
   >>   
   >> I am not aware of the details of NYC's subway signalling system, but I   
   >> am with Toronto's, which was modelled after NYC's. I was making some   
   >> assumptions that may be incorrect as Toronto's may vary from NYC's more   
   >> than I had thought.   
   [snip]   
   >> I find it difficult to believe that without reverse signalling on a line,   
   >> that there is not a final red-only signal where a turnback movement can   
   >> be done to prevent this sort of thing from happening. If this is the case,   
   >> this is a very MAJOR design flaw.   
   >   
   >Interesting point, but that would require a stop and stay signal at the   
   >"wrong" end of every station.   
      
   No it doesn't, from the Toronto perspective. Only the end of each place   
   where wrong-way operation is possible needs such a signal. Hence, the   
   point about most of Toronto's subway system being signalled for only one   
   direction.   
      
   --   
   Calvin Henry-Cotnam   
   "Unusual or extreme reactions to events caused by negligence   
    are imaginable, but not reasonably foreseeable"   
     - Chief Justice Beverley McLachlin, May 2008   
      
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