The Bosnian-Herzegovinian State Railways issue “Regulation No. 51 concerning the provisions for administrative and manipulative telegraph, telephone, electrical signals, and block services,” which is valid from May 1, 1907. This Regulation was approved by the Government of Bosnia and Herzegovina via Decree No. 993/IV dated July 23, 1903.
The booklet is printed in German. Original title: “Dienst-Vorschrift Nr. 51 betreffend die Bestimmungen für den administrativen und manipulativen Telegraphen, Telephon – sowie elektrischen Signal – und Blockierungsdienst”
Contents: 1. Telegraph Service; 2. Telegraph and Telephone Lines; 3. Telephone Service (Railway Operations Telephone); 4. Electrical Signal and Block Service (Electric Bells); 5. Fixed Signals (Authorization, Guidance, Control); 6. Electric Block and Central Equipment; 7. Battery Operation; 8. Regulations for Telegraph Maintainers’ Service (Employment, Responsibilities); 9. Schematic Diagrams.
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