Arrangements to cut off current from affected section in 20 to 25 seconds; controller governed by brake system; other features.
"Safety" and "operating" developments on the underground railways
Ry. Gaz
Railway Gazette ; 36 , n 22
1922
4 pages
6 Figs.
Article (Journal)
English
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Track circuit developments on the underground railways
Engineering Index Backfile | 1923
SAGE Publications | 1990
|Tema Archive | 1981
Engineering Index Backfile | 1902
|TIBKAT | 1964
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