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Permissive Block Regulations
Permissive Working on a railway in the United Kingdom allows more than one train at a time to be on the same line in a block section, a signal section or a dead-end platform line. Authorisation The areas where Permissive Working is allowed are given in Table A of the Network Rail Sectional Appendix In Great Britain, the Sectional Appendix is a railway document compiled by Network Rail and is the official definition of railway infrastructure, giving a detailed description of all railway lines owned by Network Rail. It has traditionally bee .... Exceptions Even where it is not authorised, a shunting movement can be allowed to enter a portion of line that is already occupied providing that it is for the purpose of: *attaching vehicles *detaching vehicles *removing vehicles. Driving towards another train When it is permitted to drive a train towards the rear of another train, such as where trains queue to enter or exit a depot, the driver must: *proceed with caution *not p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Block Section
Absolute block signalling is a British signalling scheme designed to ensure the safe operation of a railway by allowing only one train to occupy a defined section of track (block) at a time. This system is used on double or multiple lines where use of each line is assigned a direction of travel. A train approaching a section is ''offered'' by a signalman to his counterpart at the next signal box. If the section is clear, the latter ''accepts'' the train, and the first signalman may clear his signals to give permission for the train to enter the section. This communication traditionally takes place by bell codes and status indications transmitted over a simple telegraph wire circuit between signalmen using a device called a ''block instrument'', although some contemporary block working is operated wirelessly. This process is repeated for every block section a train passes through. The absolute block system does not replace the use of any other form of signalling, such as fixed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Signalling
Railway signalling (), also called railroad signaling (), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them uniquely susceptible to collision. This susceptibility is exacerbated by the enormous weight and inertia of a train, which makes it difficult to quickly stop when encountering an obstacle. In the UK, the Regulation of Railways Act 1889 introduced a series of requirements on matters such as the implementation of interlocked block signalling and other safety measures as a direct result of the Armagh rail disaster in that year. Most forms of train control involve movement authority being passed from those responsible for each section of a rail network (e.g. a signalman or stationmaster) to the train crew. The set of rules and the physical equipment used to accomplish this determine what is known as the ''method of working'' (UK), ''method of operation'' (US) or ''safeworking'' (Aus.). Not all these methods require the use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Platform
A railway platform is an area alongside a railway track providing convenient access to trains. Almost all stations have some form of platform, with larger stations having multiple platforms. The world's longest station platform is at Hubbali Junction in India at .Gorakhpur gets world's largest railway platform ''The Times of India'' The in the United States, at the other extreme, has a platform which is only long enough for a single bench. Among some United States train conductors the word "platform" has entered [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Network Rail
Network Rail Limited is the owner (via its subsidiary Network Rail Infrastructure Limited, which was known as Railtrack plc before 2002) and infrastructure manager of most of the railway network in Great Britain. Network Rail is an "arm's length" public body of the Department for Transport with no shareholders, which reinvests its income in the railways. Network Rail's main customers are the private train operating companies (TOCs), responsible for passenger transport, and freight operating companies (FOCs), who provide train services on the infrastructure that the company owns and maintains. Since 1 September 2014, Network Rail has been classified as a "public sector body". To cope with fast-increasing passenger numbers, () Network Rail has been undertaking a £38 billion programme of upgrades to the network, including Crossrail, electrification of lines and upgrading Thameslink. In May 2021, the Government announced its intent to replace Network Rail in 2023 with a ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sectional Appendix
In Great Britain, the Sectional Appendix is a railway document compiled by Network Rail and is the official definition of railway infrastructure, giving a detailed description of all railway lines owned by Network Rail. It has traditionally been published in printed format, originally as a bound book and subsequently in loose-leaf format, for ease of updating. History In earlier years, instructions to traincrews relating to the operation of the railway were included within the working timetables. As the volume of instructions increased, they later came to be published in a separate document, known in full as the ''"Sectional Appendix to the Working Timetable"'' or similar. Content There are modules for different areas, e.g. KSW2 covers Kent and Sussex. Each module may be divided in a similar way to the following sections: Section 1: Route Module ;Maps Outline maps providing a general overview of the route showing lines, station names, and reference numbers. The number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shunting (rail)
Shunting, in railway operations, is the process of sorting items of rolling stock into complete trains, or the reverse. In the United States this activity is known as switching. Motive power Motive power is normally provided by a locomotive known as a ''shunter'' (in the UK) or switcher (in the US). Most shunter/switchers are now diesel-powered but steam and even electric locomotives have been used. Where locomotives could not be used (e.g. because of weight restrictions) shunting operations have in the past been effected by horses or capstans. Hazards Coupling The terms "shunter" and "switcher" are applied not only to locomotives but to employees engaged on the ground with shunting/switching operations. The task of such personnel is particularly dangerous because not only is there the risk of being run over, but on some railway systems—particularly ones that use buffer-and-chain/screw coupling systems—the shunters have to get between the wagons/carriages in order to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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