Railway signalling and safeworking
Britain
Accident Reports, 1856
Saxby and Farmer
Automatic Signalling between Marylebone
and Wembley LNER 1923
Resignalling of Victoria and Exchange Stations,
Manchester, 1929
Denmark
Electric interlockings with power frames
France
CF du Nord, signal box instructions for
Paris Area, ca 1890
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Sidan uppdaterad den 23 augusti 2009