[PRCo] Re: Restored Signals

[Herb Brannon]

All the light and heavy rail cars/trains belonging to RTA have the gps tracking, as well as all the buses. However, all rail cars must still use the signaling systems. Regular track circuit block signals on the light rail lines and a type of cab control on the heavy rail and joint usage (light and heavy) trackage. Radio communication is used when single tracking must be utilized do to track construction.
John Swindler <j_swindler at hotmail.com> wrote:  

And the day may not be too far off when the cars could (not would) be 
equipped with GPS tracking, and then let a satellite and computers control 
safety on single track.

There's good line of sight on stretch past County Home siding, but there is 
a somewhat blind "S" curve between Yanovich and Fair grounds. And the 
Nachod signals are not totally reliable.

John


>From: Fred Schneider 
>Reply-To: pittsburgh-railways at dementia.org
>To: pittsburgh-railways at dementia.org
>Subject: [PRCo] Re: Restored Signals
>Date: Wed, 9 May 2007 15:44:49 -0400
>
>I'm chuckling.
>
>On May 9, 2007, at 1:50 PM, John Swindler wrote:
>
> >
> >
> >
> > Did you forget about the Directional Indicators, Fred??? See
> > Transportation
> > Department Order 1214A.
> >
> > And in the end, might not the signal system serve as a backup to
> > make sure
> > the dispatcher didn't lose track of a car. PTM is not Pittsburgh
> > Railways.
> >
> > John, trainee
> >
> >
> >
> >
> >
> >> From: Fred Schneider 
> >> Reply-To: pittsburgh-railways at dementia.org
> >> To: pittsburgh-railways at dementia.org
> >> Subject: [PRCo] Re: Restored Signals
> >> Date: Wed, 9 May 2007 11:53:50 -0400
> >>
> >> Let me ask you what happens if two cars from opposite ends of the
> >> block try to occupy the single track at the same time? What signal
> >> aspect do they get? And how do they resolve it? If you don't tell
> >> the crews, they don't know what to do. It isn't simply red and
> >> green.
> >>
> >> What is a spacing signal? What is an absolute block signal? Etc.
> >> Etc. Etc.
> >>
> >> Of course, we won't have spacing signals because we have no double
> >> track.
> >>
> >> On May 9, 2007, at 11:37 AM, Ken & Tracie wrote:
> >>
> >>>
> >>>> Only a few of us who knew Pittsburgh
> >>>> Railways would understand how to use them anyway. He'll have to
> >>>> create a new rule book before County Home siding can be placed in
> >>>> service.
> >>>
> >>> I'm confused by the above statement. Please elaborate. In my
> >>> admitted
> >>> ignorance, I would figure these signals would be used the same way
> >>> as they
> >>> would on any other property.
> >>>
> >>> BTW, Fred...Tracie would like to meet up with both you and your
> >>> wife in Utah
> >>> this coming summer. Please e-mail me off list.
> >>>
> >>> K.
> >>>
> >>>
> >>>
> >>
> >>
> >
> > _________________________________________________________________
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> >
> >
>
>
>

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Herb Brannon