[PRCo] Signal styles

[George W. Gula]

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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