From: jishnu@nospam.verizon.net   
      
   On 12/24/2015 12:19 PM, Adam H. Kerman wrote:   
   > Jishnu Mukerji  wrote:   
   >> On 12/22/2015 10:46 AM, Adam H. Kerman wrote:   
   >>> Jishnu Mukerji  wrote:   
   >>>> On 12/21/2015 4:26 PM, Stephen Sprunk wrote:   
   >>>>> On 21-Dec-15 12:23, hancock4@bbs.cpcn.com wrote:   
   >   
   >>>>>> Would anyone know the specific indication of the following signal:   
   >   
   >>>>>> At an interlocking, a flashing green light over a red light.   
   >   
   >>>>> ...   
   >>>>> NORAC has no flashing green over red aspect on   
   >>>>> a regular signal.   
   >   
   >>>> Not true.   
   >   
   >>>> Rule 281a at a Home signal showing flashing green over red means cab   
   >>>> speed clear. Quite common at least on the NEC.   
   >   
   >>> Hm. I don't understand the purpose, then.   
   >   
   >> The purpose is to indicate that Rule 281a must be followed, as opposed   
   >> to Rule 281 for a non-flashing green.   
   >   
   > I don't have NORAC signal rules handy. Looking for something on the Web,   
   > I came up with a scanned page with Rule 281 and Rule 281b, but no   
   > Rule 281a.   
   >   
   > You're making it sound like the wayside signal is instructing the   
   > engineer to obey the speed restriction displayed by the cab signal. Doesn't   
   > the wayside signal have the ability to convey the necessary information?   
   >   
   > I'll keep looking and do some more reading.   
   >   
      
   I quoted the text for the rule in the other response to Hancock.   
   Basically obey cab signal speed and if cab signal is not working or no   
   speed is displayed then slow down to 60mph.   
      
   You can get a copy of NORAC 8th edition at (beware large PDF file):   
      
   http://thebecketts.com/images/NORAC%208th%20Edition%20NJT.pdf   
      
   >> Effective last Saturday all of NEC South between New York and Washington   
   >> DC (barring about 7 miles of low speed limit trackage) is operating   
   >> under ACSES.   
   >   
   > Is the low speed limit enforced, or are engineers expected to obey   
   > the order?   
      
   Of course on the low speed limit segments which are basically on   
   platform tracks where ACSES is not activated, won't be enforced by ACSES   
   layer. But it is sort of already enforced by the cab signaling system,   
   which underlies ACSES at the entry points. So unless we have a rogue   
   operator who decides to speed up after entering the segment at safe   
   speed, then we do have a problem.   
      
   Incidentally you can see a quick demo of ACSES on a simulator run at the   
   Wilmington training facility at:   
      
   http://6abc.com/travel/train-safety-system-is-installed-along-no   
   theast-corridor/1132610/   
      
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