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Personal Rapid Transport
Personal rapid transit (PRT), also referred to as podcars or guided/railed taxis, is a public transport mode featuring small low-capacity automated vehicles operating on a network of specially built guideways. PRT is a type of automated guideway transit (AGT), a class of system which also includes larger vehicles all the way to small subway systems. In terms of routing, it tends towards personal public transport systems. PRT vehicles are sized for individual or small group travel, typically carrying no more than three to six passengers per vehicle. Guideways are arranged in a network topology, with all stations located on sidings, and with frequent merge/diverge points. This allows for nonstop, point-to-point travel, bypassing all intermediate stations. The point-to-point service has been compared to a taxi or a horizontal lift (elevator). Numerous PRT systems have been proposed but most have not been implemented. , only a handful of PRT systems are operational: Morgantown Per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ULTra 001
adopted by British military intelligence in June 1941 for wartime signals intelligence obtained by breaking high-level encrypted enemy radio and teleprinter communications at the Government Code and Cypher School (GC&CS) at Bletchley Park. ''Ultra'' eventually became the standard designation among the western Allies for all such intelligence. The name arose because the intelligence obtained was considered more important than that designated by the highest British security classification then used (''Most Secret'') and so was regarded as being ''Ultra Secret''. Several other cryptonyms had been used for such intelligence. The code name ''Boniface'' was used as a cover name for ''Ultra''. In order to ensure that the successful code-breaking did not become apparent to the Germans, British intelligence created a fictional MI6 master spy, Boniface, who controlled a fictional series of agents throughout Germany. Information obtained through code-breaking was often attributed to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track Transition Curve
A track transition curve, or spiral easement, is a mathematically-calculated curve on a section of highway, or railroad track, in which a straight section changes into a curve. It is designed to prevent sudden changes in lateral (or centripetal) acceleration. In plane (viewed from above), the start of the transition of the horizontal curve is at infinite radius, and at the end of the transition, it has the same radius as the curve itself and so forms a very broad spiral. At the same time, in the vertical plane, the outside of the curve is gradually raised until the correct degree of bank is reached. If such an easement were not applied, the lateral acceleration of a rail vehicle would change abruptly at one point (the tangent point where the straight track meets the curve) with undesirable results. With a road vehicle, a transition curve allows the driver to alter the steering in a gradual manner. History On early railroads, because of the low speeds and wide-radius curves em ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ULTra
adopted by British military intelligence in June 1941 for wartime signals intelligence obtained by breaking high-level encrypted enemy radio and teleprinter communications at the Government Code and Cypher School (GC&CS) at Bletchley Park. ''Ultra'' eventually became the standard designation among the western Allies for all such intelligence. The name arose because the intelligence obtained was considered more important than that designated by the highest British security classification then used (''Most Secret'') and so was regarded as being ''Ultra Secret''. Several other cryptonyms had been used for such intelligence. The code name ''Boniface'' was used as a cover name for ''Ultra''. In order to ensure that the successful code-breaking did not become apparent to the Germans, British intelligence created a fictional MI6 master spy, Boniface, who controlled a fictional series of agents throughout Germany. Information obtained through code-breaking was often attributed to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abu Dhabi
Abu Dhabi (, ; ar, أَبُو ظَبْيٍ ' ) is the capital and second-most populous city (after Dubai) of the United Arab Emirates. It is also the capital of the Emirate of Abu Dhabi and the centre of the Abu Dhabi Metropolitan Area. The city of Abu Dhabi is located on an island in the Persian Gulf, off the Central West Coast. Most of the city and the Emirate reside on the mainland connected to the rest of the country. , Abu Dhabi's urban area had an estimated population of 1.5 million, out of 2.9 million in the emirate of Abu Dhabi, as of 2016. The Abu Dhabi Investment Authority is headquartered in the city, and was the world's 5th largest sovereign wealth fund in 2021. Abu Dhabi itself has over a trillion US dollars worth of assets under management in a combination of various sovereign wealth funds headquartered there. Abu Dhabi houses local and federal government offices and is the home of the United Arab Emirates Government and the Supreme Petroleum C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ParkShuttle
The ParkShuttle is an electrically-driven, Autonomous vehicle, autonomous shuttle service that runs between Kralingse Zoom metro station in Rotterdam to the Rivium business park in Capelle aan den IJssel. The system first opened 1999 and has been extended since. It has three stops in Rivium (at the 4th, 2nd and 1st streets), a stop Fascinatio (serving the residential area in Capelle aan den IJssel and the Brainpark III business park) and finally at Kralingse Zoom metro station. In 2022 six vehicles of the third generation entered service. Parkshuttle is owned by the Rotterdam-The Hague metropolitan area (MRDH) and operated by the Connexxion bus company. The route lies on its own Right-of-way (transportation), right-of-way, but it does have level crossings with cars, cyclists and pedestrians. It is double-lane throughout except for a bridge over the N210 "Abraham van Rijckevorselweg" highway and an underpass below the A16 motorway (Netherlands), A16 motorway to connect to the railw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
