NW Mailing List
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Mon Aug 18 11:31:27 EDT 2014
Asked around about this--each ladder turnout is isolated in its own
block, so detection would be interlocked with control of the machine.
Signals amount to just switch indicators.
> Date: Sun, 13 Oct 2013
> Hello Joe,
> Help, now I'm confused, power switches outside interlockings? Which,
> where, how?
> Grant Carpenter
>> Date: Wed, 09 Oct 2013
>> My confusion is the polar opposite of Mr Burnett's. How can you have
>> dispatcher controlled power switches outside the interlocking (control
>> point)? It seems counterintuitive to me, but they exist in Roanoke,
>> Bluefield, and Williamson at least, and probably elsewhere. I presume
>> there are timetable instructions governing movement through them, and
>> those instructions probably require permission from the yardmaster to
>> foul the switches. I guess it's just cheaper (and less complex) than
>> having a seperate signal for every yard track.
>> Joe Shaw
>> Christiansburg, VA
> Date: Mon, 14 Oct 2013
> On 10/13/2013 1:46 PM, NW Mailing List wrote:
>> Help, now I'm confused, power switches outside interlockings? Which,
>> where, how?
> In Roanoke, they are located on the Forwarding Yard ladder & its
> derails, the Park Street ladder, the east end of the Empty Side ladder.
> These are controlled by the Roanoke dispatcher. The Hump Tower controls
> power switches for the Hump Yard and Rt.66 (going from the Receiving
> Yard (Big Hopper Yard tracks 1 - 10) east to the Old Eastbound Main Line
> just east of the hump on the south side. No big deal guys. Just like
> putting remote power switches on your model railroad.
> Jimmy Lisle
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