<html><head></head><body>Tell Chris a million thanks!<br><br><div class="gmail_quote">On August 7, 2016 9:19:43 AM EDT, "Edward H. Lybarger" <trams2@comcast.net> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">I asked Chris Walker at Port Authority for clarification. He sent the following:<br /><br />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.<br /><br />These signals are not found on the Beechview line - they were strictly a Stage II thing. <br /><br />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.<br /><br />Hope that hel
ps.<br
/><br />Chris<br /><br />Ed<br /><br />-----Original Message-----<br />From: Pittsburgh-railways [mailto:pittsburgh-railways-bounces@mailman.dementix.org] On Behalf Of James Keener via Pittsburgh-railways<br />Sent: Saturday, August 06, 2016 10:22 AM<br />To: George W. Gula; Western PA Trolley discussion; George W. Gula via Pittsburgh-railways; Herb Brannon<br />Subject: Re: [PRCo] Signal styles<br /><br />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.<br /><br />On August 6, 2016 10:09:02 AM EDT, "George W. Gula via Pittsburgh-railways" <pittsburgh-railways@mailman.dementix.org> wrote:<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;">While I¹m not sure just why they are different, I can hazard a gue
ss.<br
/>The<br />Beechview (Red)Line opened in 1987 and the the Blue line opened in <br />2002.<br />That¹s abut 15 years difference and both the available technology and <br />the Bidders changed during that period. PAT wrote their specs and the <br />bidders placed bids based on what was available at the time. I don¹t <br />think there is anything historical involved here.PAT just wanted a <br />product at the low bid, as required by law.<br /><br /><br />George Gula<br /><br />On 8/6/16, 9:51 AM, "Pittsburgh-railways on behalf of Herb Brannon via <br />Pittsburgh-railways" <pittsburgh-railways-bounces@mailman.dementix.org<br />on<br />behalf of pittsburgh-railways@mailman.dementix.org> wrote:<br /><br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;">Jim,<br />I can tell you all about what was going on in the PCC era, however,<br /></blockquote>you<br /><blockquote class="gmail_quote" style="margin: 0p
t 0pt
1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;">will need to find someone who is more knowledgeable about the current<br /></blockquote>era<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;">to answer your question. I seldom ride the T these days inasmuch as I <br />really don't live near a station. I have to drive from Brentwood down<br /></blockquote>to<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;">Castle Shannon or Washington Jct to find a parking lot for the T so<br /></blockquote>it's<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;">easier and faster to drive into the city and park at Station Square<br /></blockquote>then<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left:
1ex;">ride from there to the main downtown.<br /><br />Bruce Wells, if you know him, may know about the current signal<br /></blockquote>system.<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;"><br />On Fri, Aug 5, 2016 at 8:17 AM, James Keener via Pittsburgh-railways < <br />pittsburgh-railways@mailman.dementix.org> wrote:<br /><br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #8ae234; padding-left: 1ex;"> I've been commuting by rail and have noticed at least two distinct<br /></blockquote></blockquote>style<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;"><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #8ae234; padding-left: 1ex;"> of signal, color-light-clear-on-top on the red line and <br />position-light-clear-on-bottom near south hil
ls
junction. Are there <br />others?<br /> Are these historical accidents of who installed them or is there<br /></blockquote></blockquote>some<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;"><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #8ae234; padding-left: 1ex;"> significants to the type of display?<br /><br /> Jim<br /> --<br /> Sent from my Android device with K-9 Mail. Please excuse my brevity.<br /><br /><br /> -------------- next part -------------- An HTML attachment was <br /> scrubbed...<br /> URL: <<a href="http://mailman.dementix.org/pipermail/pittsburgh-railways">http://mailman.dementix.org/pipermail/pittsburgh-railways</a>/<br /> attachments/20160805/c62fde64/attachment.html><br /><hr /><br /> Pittsburgh-railways mailing list<br /> Pittsburgh-railways@mailman.dementix.org<br /> <a
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