Block system
Block system Block system (Railroads) A system by which the track is divided into short sections, as of three or four miles, and trains are so run by the guidance of electric, or combined electric and pneumatic, signals that no train enters a section or block until the preceding train has left it, as in

{absolute blocking}, or that a train may be allowed to follow another into a block as long as it proceeds with excessive caution, as in

{permissive blocking}. [Webster 1913 Suppl.]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Block system — Block Block (bl[o^]k), n. [OE. blok; cf. F. bloc (fr. OHG.), D. & Dan. blok, Sw. & G. block, OHG. bloch. There is also an OHG. bloch, biloh; bi by + the same root as that of E. lock. Cf. {Block}, v. t., {Blockade}, and see {Lock}.] [1913 Webster] …   The Collaborative International Dictionary of English

  • Block system — System Sys tem, n. [L. systema, Gr. ?, fr. ? to place together; sy n with + ? to place: cf. F. syst[ e]me. See {Stand}.] 1. An assemblage of objects arranged in regular subordination, or after some distinct method, usually logical or scientific;… …   The Collaborative International Dictionary of English

  • block-system — [blɔksistɛm] n. m. ÉTYM. 1881; angl. block system (1873), de (to) block « fermer », et system. ❖ ♦ Anglic. Techn. (ch. de fer). Dispositif de signalisation automatique sur des sections de voie, destiné à éviter les collisions. || …   Encyclopédie Universelle

  • block system — n. a system of dividing a railroad track into several sections (blocks) and regulating the trains by automatic signals (block signals) so that there is usually no more than one train in one section …   English World dictionary

  • block-system — blockˈ system noun (rail) A system in which no train is allowed onto a section of line so long as any other is on it • • • Main Entry: ↑block …   Useful english dictionary

  • block system — noun 1. : a system of mountain ranges composed of tilted or uplifted fault blocks compare basin range 2. : a system by which a railroad track is divided into short sections (as of three or four miles) and trains are so run by the guidance of… …   Useful english dictionary

  • block system — Railroads. 1. a series of consecutive blocks. Cf. block (def. 22). 2. a system of blocks and block signals for controlling train movements. [1860 65] * * * …   Universalium

  • block system — series of sequential blocks; system of blocks for controlling train flow wherein railroad track is divided into short sections and trains are guided by automatic signals …   English contemporary dictionary

  • block system — noun a system of railway signalling which divides the track into sections and allows no train to enter a section that is not completely clear …   English new terms dictionary

  • block system — /ˈblɒk sɪstəm/ (say blok sistuhm) noun any system of controlling train movements by allowing only one train at a time into a section of the railway …   Australian English dictionary

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