NW vs NS intermediate signals

[NW Mailing List]

The Approach Restricting indication was briefly in the position-light 
rulebook.  Until someone came to the conclusion that it might be possible 
for a caboose or other obstruction to be right past the next signal 
displaying a restricting indication, and if a train wasn't prepared to stop 
he'd be into it before he could get stopped.  So the Approach Restricting 
signal was taken out.  I only know of one application of it - at Renick 
Tower, when a westbound was lined onto the B&O connection.  The Approach 
Restricting signal didn't require you to be prepared to stop before passing 
the next signal.  Even if you needed to be.

EdKing

-----Original Message----- 
From: NW Mailing List
Sent: Wednesday, September 28, 2016 7:50 AM
To: NW Mailing List
Subject: Re: NW vs NS intermediate signals



On 9/27/2016 9:49 PM, NW Mailing List wrote:
> On the N&W, if a block was occupied, it's intermediate signal showed "stop 
> and proceed".  If the block in advance were occupied it showed "approach" 
> and otherwise it showed "clear".  With NS, it appears that the most 
> restrictive aspect for an intermediate is "restricting", shown when the 
> block is occupied.  My question is, if the block in advance is occupied 
> does the signal show "approach restricting"?  Does this mean that the 
> "approach" aspect is only displayed for a block before a control point 
> that is showing "stop"?
> Jim Cochran

Jim,
     No where that I know of on the districts out of Roanoke had the
ability to display an "approach restricting" signal (note that this
aspect had a flashing yellow light). I would think that an "approach"
aspect would be need to be displayed preceding an "approach restricting"
in order for the train to reduce its speed down enough to comply with
the 15 mph maximum speed.

Jimmy Lisle
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