[PRCo] Signal styles

Sun Aug 7 09:34:56 EDT 2016

I visited Portland and Seattle last month (also southeastern PA, but not
Philly) and saw a large number of those international signals. Found myself
in the position of explaining them while standing on a corner in Portland,
in fact. Seattle's LINK now goes to the airport, by the way, and they have
a streetcar as well which was giving free rides on the weekend I was there.

As an aside, hello from Somerville, Massachusetts, where I live as of 2
days ago.

On Sun, Aug 7, 2016 at 9:19 AM, Edward H. Lybarger via Pittsburgh-railways <
pittsburgh-railways at mailman.dementix.org> wrote:

> I asked Chris Walker at Port Authority for clarification.  He sent the
> following:
>
> The "International" signals govern rail traffic in two locations - the
> Overbrook line merge with the South Busway at South Hills Junction, and the
> grade crossing with Castle Shannon Boulevard. These display a horizontal
> bar for stop, and a vertical bar for proceed. Both are tied in with the
> cycles of regular, three-aspect traffic signals at their respective
> locations. They're designed to provide the transit operator with
> instructions while not confusing motorists at road/rail intersections.
>
> These signals are not found on the Beechview line - they were strictly a
> Stage II thing.
>
> I think the "clear on top" signals in question are the regular lineside
> spacing signals on the Red Line. With a couple exceptions, these are not
> found on Overbrook, as Blue Line cars run on cab signaling between Willow
> and South Hills Junction.
>
> Hope that helps.
>
> Chris
>
> Ed
>
> -----Original Message-----
> From: Pittsburgh-railways [mailto:pittsburgh-railways-
> bounces at mailman.dementix.org] On Behalf Of James Keener via
> Pittsburgh-railways
> Sent: Saturday, August 06, 2016 10:22 AM
> To: George W. Gula; Western PA Trolley discussion; George W. Gula via
> Pittsburgh-railways; Herb Brannon
> Subject: Re: [PRCo] Signal styles
>
> The red and blue lines seem to have a majority of the upsidedown traffic
> signal style. The semaphore-lights-in-a-traffic-signal-body seem
> interspersed through. One driver called the later "international style" bit
> I wasn't able to find more info.
>
> On August 6, 2016 10:09:02 AM EDT, "George W. Gula via
> Pittsburgh-railways" <pittsburgh-railways at mailman.dementix.org> wrote:
> >While I¹m not sure just why they are different, I can hazard a guess.
> >The
> >Beechview (Red)Line opened in 1987 and the the Blue line opened in
> >2002.
> >That¹s abut 15 years difference and both the available technology and
> >the Bidders changed during that period. PAT wrote their specs and the
> >bidders placed bids based on what was available at the time. I don¹t
> >think there is anything historical involved here.PAT just wanted a
> >product at the low bid, as required by law.
> >
> >
> >George Gula
> >
> >On 8/6/16, 9:51 AM, "Pittsburgh-railways on behalf of Herb Brannon via
> >Pittsburgh-railways" <pittsburgh-railways-bounces at mailman.dementix.org
> >on
> >behalf of pittsburgh-railways at mailman.dementix.org> wrote:
> >
> >>Jim,
> >>I can tell you all about what was going on in the PCC era, however,
> >you
> >>will need to find someone who is more knowledgeable about the current
> >era
> >>to answer your question. I seldom ride the T these days inasmuch as I
> >>really don't live near a station. I have to drive from Brentwood down
> >to
> >>Castle Shannon or Washington Jct to find a parking lot for the T so
> >it's
> >>easier and faster to drive into the city and park at Station Square
> >then
> >>ride from there to the main downtown.
> >>
> >>Bruce Wells, if you know him, may know about the current signal
> >system.
> >>
> >>On Fri, Aug 5, 2016 at 8:17 AM, James Keener via Pittsburgh-railways <
> >>pittsburgh-railways at mailman.dementix.org> wrote:
> >>
> >>> I've been commuting by rail and have noticed at least two distinct
> >style
> >>> of signal, color-light-clear-on-top on the red line and
> >>>position-light-clear-on-bottom near south hills junction. Are there
> >>>others?
> >>> Are these historical accidents of who installed them or is there
> >some
> >>> significants to the type of display?
> >>>
> >>> Jim
> >>> --
> >>> Sent from my Android device with K-9 Mail. Please excuse my brevity.
> >>>
> >>>
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> >>
> >>
> >>
> >>--
> >>*Herb Brannon*
> >>
> >>*In Pittsburgh...........A City and*
> >>*..........................A State of  Mind *
> >>
> >>
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> >
> >
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> Sent from my Android device with K-9 Mail. Please excuse my brevity.
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