permissive blocking — noun : block system … Useful english dictionary
absolute blocking — 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… … The Collaborative International Dictionary of English
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… … The Collaborative International Dictionary of English
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
Japanese railway signals — This article explains railway signals in Japan.In Japanese ministerial decree defining technical standard of railway (鉄道に関する技術上の基準を定める省令 Tetsudō ni kansuru gijutsu jō no kijun wo sadameru shōrei), railway signals are defined to indicate… … Wikipedia
Google Chrome — This article is about the web browser. For the operating system, see Google Chrome OS. Google Chrome … Wikipedia
Unusual uses of traffic lights — Unusual uses of traffic lights, as used in various regional locations, may for example include traffic lights used in a non standard fashion, or in a non standard arrangement, or for specific traffic. Alternating Alternates (Flashing Lights) In… … Wikipedia
Traffic light — The traffic light, also known as traffic signal, stop light, traffic lamp, stop and go lights, robot or semaphore, is a signaling device positioned at a road intersection, pedestrian crossing, or other location. Its purpose is to indicate, using… … Wikipedia
Network neutrality in the United States — Network Neutrality Related issues and topics Automatic telephone exchange Data discrimination End to end principle Internet Protocol Tiered Internet Bandwidth Throttling … Wikipedia
Norton Internet Security — The main, simplified graphical user interface of Norton Internet Security 2012 … Wikipedia
