Full description
The Signal and Interlocking Engineer's Branch was responsible for the construction, maintenance and repair of signalling equipment, telegraphs and telephones throughout the New South Wales rail network. Work was also carried out on level crossings. Interlocking referred to the mechanical process of resetting railway tracks from a central control point allowing locomotives to follow branch lines, pass through junction points, use crossing loops or detour onto spur lines. The branch closed to become the Signalling Branch in 1933User Contributed Tags
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