From: heller@deepsoft.com   
      
   At Thu, 3 Mar 2016 12:00:56 -0800 (PST) hancock4@bbs.cpcn.com wrote:   
      
   >   
   > For a green over red, (Rule 281 Clear--Proceed), does it make any   
   > difference if the signal is a home signal at an interlocking, or a   
   > block signal with a number plate?   
      
   I believe most of the time these days, the upper head of a multi-head   
   interlocking signal is the same as a block signal for the straight route. The   
   only 'gotcha' is that red over red [over red] (all heads showing red) always   
   means stop right here (absolute stop) -- often because the points might not be   
   aligned or there is some other conflict (like a crossing). A single head red   
   (simple block signal) is stop and proceed at reduced speed, expecting to stop   
   when catching up with a train ahead.   
      
   >   
   > The illustration in the NORAC book showed only a signal head without   
   > a number plate.   
   >   
   > Can I presume "normal speed" is defined in the employees timetable   
   > for that particular stretch of track and particular type of train?   
   >   
   > Thanks.   
   >   
      
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