Replacement of mechanical interlocking with automatic plant and coordination of traffic signals with train movements, at Nadeau, Calif.
Automatic interlocking involves highway crossing signals
Ry Signaling
Railway Signaling ; 28 , n 6
1935
2 pages
Article (Journal)
English
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Automatic interlocking involves two crossings
Engineering Index Backfile | 1937
Automatic interlocking replaces crossing gates
Engineering Index Backfile | 1937
Automatic interlocking replaces gates at crossing
Engineering Index Backfile | 1933
Automatic interlocking replaces mechanical plant at crossing
Engineering Index Backfile | 1933
Semi-automatic interlocking at crossing on Alton
Engineering Index Backfile | 1935