I enjoyed Gordon Davids' mini-treatise on the Lincoln Park signal. For those who don't work with this stuff, let me point out that it takes a great deal of discipline in technical writing to use the correct terminology correctly. I do wish the industry would replace "arm" to "signal head" or something similar. How archaic is that? Gordon, if I understand him correctly, says Erie and DL&W were the only railroad he knows that included non-illuminated arms (signal heads with no lamp lit) in legitimate aspects. This is common on former PRR Buffalo Line position light signals, at interlockings and elsewhere, and I have observed it on ex-NKP signals between Buffalo and Cleveland, which are (were) otherwise similar to color light signals on the Erie. I believe I also have seen photos of it elsewhere. I have NOT observed it on former Erie Railroad properties and have been given to understand that the Erie considered it unacceptable and applied that rule that a "light out" was to be taken as the most restrictive aspect possible. I admire the practicality and economy of having two 2-lamp color light targets do it all, but I agree that it is inferior signal practice due to the birds nest or accumulations of snow on the glass or on the visor of the signal below. WDB **************************************See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004) The Erie Lackawanna Mailing List http://EL-List.railfan.net/ To Unsubscribe: http://Lists.Railfan.net/erielackunsub.html ------------------------------
This HTML page is © 2000-2008 Blue Moon Online System and The Railfan Network
This page and the data contained therein may not be reproduced
for any form of commercial use without the explicit permission
of J. Henry Priebe Jr. or his duly authorized agent.