Block system described is called open-line block; use is also made of system of automatic block with line closed. (See also -- appendix p 135-145)
Automatic block signalling organisation on the nether-land state railways
Int. Ry. Congress Assn. -- Bul
1928
20 pages
18 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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