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Re: Helena East - Not to be confused with East Helena
Author: Craig Tambo
Date: 05-07-2015 - 22:10
Jon Wrote:
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> Actually Lunar has a slight blue tint to it when
> compared to White. I believe WP's use of Lunar
> meant to enter a siding at a restricted speed and
> to expect that siding to already be occupied by
> another train or MOW equipment.
>
> WP used Lunar at Flanagan for w/b SP trains to
> enter the Modoc Line.
>
> I know SP used a flashing White light for s/b
> trains on the Shasta Line near Azalea, north of
> Dunsmuir, so there is a difference between White
> and Lunar. I don't know if that light is still
> there, at the end of the two sidings, now 2 MT.
>
> It's just that Yellow over Lunar seems confusing.
> Red over Lunar would make sense to me. I do
> recall someone saying that on the old BN, Yellow
> over Lunar was the same as Yellow over flashing
> Red.
I never saw a lunar signal on the WP, but I can only speak for territory from Oroville west. At places where diverging from the main included a likelihood of occupied track (such as Fremont, South Sacramento, Marysville, Oroville (but oddly, not Stockton))you would get a red-over-flashing red. A diverging signal into an unbonded siding would be red-over-yellow (could be occupied), while a bonded siding would be red-over-flashing yellow if unoccupied or red-over-yellow if occupied. The only bonded siding west of Oroville was at Tracy.
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> Actually Lunar has a slight blue tint to it when
> compared to White. I believe WP's use of Lunar
> meant to enter a siding at a restricted speed and
> to expect that siding to already be occupied by
> another train or MOW equipment.
>
> WP used Lunar at Flanagan for w/b SP trains to
> enter the Modoc Line.
>
> I know SP used a flashing White light for s/b
> trains on the Shasta Line near Azalea, north of
> Dunsmuir, so there is a difference between White
> and Lunar. I don't know if that light is still
> there, at the end of the two sidings, now 2 MT.
>
> It's just that Yellow over Lunar seems confusing.
> Red over Lunar would make sense to me. I do
> recall someone saying that on the old BN, Yellow
> over Lunar was the same as Yellow over flashing
> Red.
I never saw a lunar signal on the WP, but I can only speak for territory from Oroville west. At places where diverging from the main included a likelihood of occupied track (such as Fremont, South Sacramento, Marysville, Oroville (but oddly, not Stockton))you would get a red-over-flashing red. A diverging signal into an unbonded siding would be red-over-yellow (could be occupied), while a bonded siding would be red-over-flashing yellow if unoccupied or red-over-yellow if occupied. The only bonded siding west of Oroville was at Tracy.
