NW vs NS intermediate signals

NW Mailing List nw-mailing-list at nwhs.org
Wed Sep 28 07:50:30 EDT 2016



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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