East Leg of Campbell Ave. Wye, Roanoke

NW Mailing List nw-mailing-list at nwhs.org
Thu Jun 24 22:40:48 EDT 2021

This article isn’t precise, but provides a general date for electrical interlocking. 

The attached photo is from the 1929 Railway Engineering and Maintenance Cyclopedia. 

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Matt Goodman
Columbus, Ohio

Sent from my mobile

On Jun 23, 2021, at 7:42 PM, NW Mailing List <nw-mailing-list at nwhs.org> wrote:

Does anyone know when the east leg of the Campbell Ave Wye at Roanoke was interlocked?  And how movements there were handled before it was interlocked?
For a long time I have been looking for information on the first use of **remote interlocking,**  i.e. controlling switches/signals at some distance from a tower or interlocking plant, by the use of electricity.  I have no substantive information yet, but it seems that around 1910-1912 **remote interlocking** may have come onto the general railroad scene.  And while I was looking at the satellite imagery of Raonoke today, the question sprang to my mind, How did they control the East Leg before remote interlocking?  Obviously it was done with hand switches, but what were the protocols, the permissions, the policies and special instructions, &c ?
-- abram burnett
June is National Turnip Month 
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