Signal Question and rule term

[NW Mailing List]

Something else to note is, in this day and time. The railroad companies 
seem to be trying to standardize turnout speeds along particular routes. 
I know out here on BNSF we get Diverging Clear for out crossovers. BUT 
you will get either an Approach Medium in advance of a 25MPH crossover. 
or in advance of a 50 MPH Crossover we will get an Advance Approach. 
(Yeah I know we are a little screwy) if it is a 60 MPH crossover we will 
get an Approach Limited in advance of it. Something else I will mention 
that was quite comical if you ask me, is how the Old Heads used to 
remember the 40 MPH turnouts vs the 25 MPH Turnouts on the 240 mile run 
from Alliance to Ravenna. LSD is how they remembered it, and NO I do not 
mean the drug. LSD stood for Lakeside, Seneca, and Dunning.

Nathan
Furloughed in Wyoming, but recently recalled to Denver, and likely bound 
for California

On 6/12/2016 10:27, NW Mailing List wrote:
> 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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-- 
Nathan Simmons
trainman51 at gmail.com
http://www.t-51.org
KI4MSK