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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>After late 1958, the N&W went from
position light signals- all yellow- to color position light signals using red,
yellow and green. The aspects for each individual signal head are
different depending on what aspects are necessary to be displayed at a specific
location. An N&W operating rule book will show what aspects are used
by the railroad for a give range of years. Rules and aspects change over
time. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>In very simple terms, a seven position
color-position- light would have two green lights top and bottom, three red
lights in a horizontal row though the center, and yellow lights on the diagonal
positions on the perimeter. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>For instance the aspect of three vertical
yellow lights or two vertical green lights means ‘proceed’; three
horizontal yellow lights or three horizontal red lights means stop or
stop-and-stay. Other aspects display, approach, approach slow, approach
medium, diverging approach and many other aspects. The intent is to
provide the engineer with speed control information and then some information
on diverging routes. Thus, signals are constructed to show different
aspects as a train approaches a switch, cross over, siding, interlocking or
whatever. They are not just –stop-or-go. So, not all signal
heads use all 7 locations.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>There are a couple of websites that cover
railroad signaling especially the <st1:State w:st="on"><st1:place w:st="on">Pennsylvania</st1:place></st1:State>
railroad type which are similar but not the same as N&W types. You would
do well to study these sites and also visit any railroad layouts that use
extensive operating signal systems. They will have some good advice for
you. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Gary Rolih<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Secretary N&WHS <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
nw-modeling-list-bounces@nwhs.org [mailto:nw-modeling-list-bounces@nwhs.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b><st1:PersonName w:st="on">NW
Modeling List</st1:PersonName><br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, September 03, 2009
9:00 PM<br>
<b><span style='font-weight:bold'>To:</span></b> NW-Modeling-List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Signal Head</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Gentlemen,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I have purchased the N&W signal head and I would like to know what
color the lamps are 7 (seven) holes for lamps.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I have been told the lamps were amber and also have been told they
where red.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>My son and I are modelling N&W from the mid 40's to the mid 70's
with a twist on history or basically freelancing the road.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Rhank you for your hekp.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Yours aye,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mac<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>(Macdonald,RB)<o:p></o:p></span></font></p>
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