Signal Question and rule term

[NW Mailing List]

This is the differrence of medium clear (speed) vs Diverging Clear 
(turnout position/route). Practically all signals are really speed 
designators but that is relevant to the local situation and circumstances.
Position lights are a replacement for semaphores. Nothing mechanical to 
maintain except for relays.
All railroads treated their signals with their own unique variances, but 
its based on what their needs are.
Much of the N&W territory is heavy mountain slow coal drags so knowing 
what speed you have to run may not be so important than what the track 
condition is. I'd have to relook at N&W/Pennsy signals especially since 
I am modeling N&W anyways) but that is some good basic thinking.
-Lynn-


On 10/28/2013 5:59 AM, nw-mailing-list-request at nwhs.org wrote:
> Subject:
> Signal Question and rule term
> From:
> NW Mailing List <nw-mailing-list at nwhs.org>
> Date:
> 10/27/2013 6:35 PM
>
> To:
> Norfolk and Western Historical Society Mailing List
> <nw-mailing-list at nwhs.org>
>
>
> Hello all,
>
> The latest round of questions into signaling and position lights got me
> wondering about some things. Living up here in New Jersey, I'm familiar
> with PRR position lights and their use of say "Medium Clear". Where as
> the N&W used and NS (Outside of former CR territory) still uses
> "Diverging Clear" on position lights. Was this something that was done
> at the beginning of the use of position lights on the N&W or was there a
> time where they to were using "Medium" as well? Seeing as how the PRR
> had influence over the N&W I've always wondered why the signal rules
> were a bit different.
>
> Thanks
>
> -Brandon Kaback

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