CPL signals and how they operate (NW Mailing List)

[NW Mailing List]

The N&W did not colorize in stages. When they went to color lenses in the mid 1960’s, the amber lenses were eliminated in their entirety.

The PRR however, only replaces the horizontal lenses for stop with red lenses at interlocking, dubbed “red eyes”, this became more or less standard on most of the PRR and into Conrail.

Eric off the Columbus District

> On Jan 28, 2020, at 16:53, NW Mailing List <nw-mailing-list at nwhs.org> wrote:
> 
> 
>> On 1/27/2020 4:17 PM, NW Mailing List wrote:
>> I was completely unaware of intermediate steps between all amber position lights to the colorized version that was in place when I started looking. 
> A conductor that I worked with did not remember it happening that way.
> 
> Jimmy Lisle
> 
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