From: stephen@sprunk.org   
      
   On 27-Dec-15 20:24, hancock4@bbs.cpcn.com wrote:   
   > Stephen Sprunk wrote:   
   >> Note that trains with only 4-aspect PRR cab signals will receive   
   >> Cab Speed 80mph as Approach Medium (45mph) and Clear 125mph as   
   >> Clear (MAS), and will not receive Cab Speed 60mph and Clear 100mph   
   >> at all.  They also can't distinguish between Restricting (20mph)   
   >> and Stop.   
   >   
   > The impression I got was that in _addition_ to display the signal   
   > aspect, the cab signal system now also displays the permissable   
   > speed.  That could be either as a light ring around the speedometer   
   > or a digital readout.   
      
   The human interface is orthogonal to whether they're equipped for the   
   4-aspect or 9-aspect systems.   
      
   S   
      
   --   
   Stephen Sprunk         "God does not play dice."  --Albert Einstein   
   CCIE #3723         "God is an inveterate gambler, and He throws the   
   K5SSS        dice at every possible opportunity." --Stephen Hawking   
      
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