Roanoke Junction

NW Mailing List nw-mailing-list at
Sun Oct 13 13:46:35 EDT 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


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