More on Interlocking signals

[NW Mailing List]

Actually the Signal at the end of the siding, that is allowing entry is 
an Diverging Approach, the signal before it is a Approach Diverging.

Nathan Simmons
trainman51 at gmail.com
http://www.t-51.org
KI4MSK

On 10/5/2013 10:24, NW Mailing List wrote:

> *Jim:*

> *If I'm deciperhing this diagram correctly, the signal at the entring*

> *end of the siding is displaying an APPROACH DIVERGING.  The*

> *bottom target shows three amber lights pointed toward the main.*

> *The center amber light shouldn't be there.  Bear in mind that not*

> *all sidings were bonded and therefore couldn't detect if the siding*

> *was occupied or if there were track defects or a switch not properly*

> *line.  For non-bonded sidings, the signal at the entering end of the*

> *siding would desplay RESTRICTING. On the Pittsburgh Division, the*

> *W&LE had a multitude of non-bonded sidings and maximum*

> *authorized speed to enter was 15 MPH.  N&W's Safety Department*

> *ID'ed restricitng signals by noting that the diagonal  signal on the*

> *bottom target point to the ditch and if you don't comply with the*

> *indication,*   the ditch is exactly where you're going.  Harry Bundy

> Inline image 1

>

> Inline image 2

>

>

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