All electric interlocking frame and panel type installations form part off important work which will provide complete power signaling at and between York and Darlington; color light signals, using searchlight equipments, are being used throughout, with theater type route indicators where conditions necessitate it and 5lamp form of position light junction indicator.
Resignalling between Northallerton and Darlington, L.N.E.R
Ry Gaz
Railway Gazette ; 70 , n 24
1939
3 pages
Article (Journal)
English
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