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Washington Metro Signaling And Operation
Signaling and operation on the Washington Metro system involves train control, station identification, train signaling, signage, and train length. As with any working railroad, communication between train operators, dispatchers, station personnel and passengers is critical. Failures will result in delays, accidents, and even fatalities. It is therefore important that a comprehensive signal system operated by a central authority be in place. This gives individual train and station operators the information they need to safely and efficiently perform their tasks. Train control Metro was designed to use an Automatic Train Control (ATC) system, which comprises three sub-systems. Automatic Train Protection (ATP) protects trains by separating them so as to avoid collision. Automatic Train Supervision (ATS) routes trains and assists in maintaining adherence to schedule. Together, these two sub-systems provide input to the train's cab signals and to a third sub-system, Automatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Spring Pocket Track
Silver is a chemical element with the symbol Ag (from the Latin ', derived from the Proto-Indo-European ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity, silver has had an enduring role in most human cultures. Other than in curre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blizzard Of 1996
The North American blizzard of 1996 was a severe nor'easter that paralyzed the United States East Coast with up to of wind-driven snow from January 6 to January 8, 1996. This storm was a classic example of a nor'easter, but the storm would not have been as historically significant without the presence of the arctic high pressure system located to the north of New York. It was followed by another storm, an Alberta Clipper, on January 12, then unusually warm weather and torrential rain which caused rapid melting and river flooding in the Northeast Floods later that month. Along with the March Superstorm of 1993 and the January 2016 United States blizzard, it is one of only three snowstorms to receive the top rating of 5, or "Extreme", on the Northeast Snowfall Impact Scale (NESIS). Impact Virginia Most of Virginia was impacted with the more central and western parts receiving of snow. Roanoke got a record-breaking . The heaviest snow fell in Page County, with around . Snowfa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miami Metrorail
Metrorail is the heavy rail rapid transit system of Miami and Miami-Dade County in the U.S. state of Florida. Metrorail is operated by Miami-Dade Transit (MDT), a departmental agency of Miami-Dade County. Opened in 1984, it is Florida's only rapid transit metro system, and is currently composed of two lines of 23 stations on of standard gauge track. Metrorail serves the urban core of Miami, connecting Miami International Airport, the Health District, Downtown Miami, and Brickell with the northern developed neighborhoods of Hialeah and Medley to the northwest, and to suburban The Roads, Coconut Grove, Coral Gables, and South Miami, ending at urban Dadeland in Kendall. Metrorail connects to the Metromover in Downtown, which provides metro service to the entirety of Downtown and Brickell. Additionally, it connects to South Florida's commuter rail system at Tri-Rail station, as well as Metrobus routes at all stations. In , the system had rides, and about per day in . In 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PATCO Speedline
The PATCO Speedline (signed in Philadelphia as the Lindenwold Line and also known colloquially as the PATCO High Speed Line) is a rapid transit route operated by the Port Authority Transit Corporation (PATCO), which runs between Philadelphia, Pennsylvania and Camden County, New Jersey. The line runs underground in Philadelphia, crosses the Delaware River on the Benjamin Franklin Bridge, runs underground in Camden, then runs above ground to the east end of the line in Lindenwold, New Jersey. The Port Authority Transit Corporation and the Speedline are owned and operated by the Delaware River Port Authority. The line opened between Lindenwold and Camden on January 4, 1969 with the full line to Philadelphia opening a few weeks later on February 15, 1969. The PATCO Speedline operates 24 hours a day, one of only a few U.S. mass transit systems to do so. In , the line saw rides, or about per weekday in . History Philadelphia to Camden The modern-day PATCO Speedline follow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltimore Metro SubwayLink
The Metro SubwayLink is a rapid transit line serving the greater area of Baltimore, Maryland, in the United States, and is operated by the Maryland Transit Administration. The segment in Downtown Baltimore is underground, and most of the line outside the central city is elevated or at surface grade. In , the line had a ridership of , or about per weekday as of . History The origins of the Metro Subway lie in the Baltimore Area Mass Transportation Plan, published in 1965, which envisioned six rapid transit lines radiating out from a central city loop. Planning studies from 1968 proposed a rail transit system long. As the vision was translated into reality, the original concept was trimmed to a system in the Phase 1 plan, published in 1971. This plan involved two of the original six lines: a northwest line from Downtown Baltimore to Owings Mills and a south line to Glen Burnie and the airport. Phase 1 was approved for funding by the Maryland General Assembly in 1972. In respons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Punch Box
Rail terminology is a form of technical terminology. The difference between the American term ''railroad'' and the international term ''railway'' (used by the International Union of Railways and English-speaking countries outside the United States) is the most significant difference in rail terminology. These and other terms have often originated from the parallel development of rail transport systems in different parts of the world. In English-speaking countries outside the United Kingdom, a mixture of US and UK terms may exist. Various global terms are presented here. Where a term has multiple names, this is indicated. The abbreviation "UIC" refers to standard terms adopted by the International Union of Railways in its official publications and thesaurus. 0–9 A B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pocket Track
A pocket track, tail track, or reversing siding (UK: centre siding , turnback siding) is a rail track layout which allows trains to park off the main line. This type of track layout differs from a passing loop in that the pocket track is usually located between two main lines, rather than off to the side. Pocket tracks also allow for the short-turning of trains, truncating services at an intermediate station to control train frequency. They are also used at terminal station A train station, railway station, railroad station or depot is a railway facility where trains stop to load or unload passengers, freight or both. It generally consists of at least one platform, one track and a station building providing such ...s to allow for the construction of future extension of a rail track without disrupting existing service. References {{rail-stub Railway sidings ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WMATA D Route Pocket Track
The Washington Metropolitan Area Transit Authority (WMATA ), commonly referred to as Metro, is a tri-jurisdictional government agency that operates transit service in the Washington metropolitan area. WMATA was created by the United States Congress as an interstate compact between Washington, D.C., the State of Maryland, and the Commonwealth of Virginia. WMATA provides rapid transit service under the Metrorail name, fixed-route bus service under the Metrobus brand, and paratransit service under the MetroAccess brand. In , the system had a ridership of , or about per weekday as of . The authority is also part of a public–private partnership that operates the DC Circulator bus system. WMATA has its own police force, the Metro Transit Police Department. The authority's board of directors consists of two voting representatives each from the District of Columbia, Maryland, Virginia, and the U.S. federal government. Each jurisdiction also appoints two alternate representatives. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincolnia, Virginia
Lincolnia is a census-designated place (CDP) in Fairfax County, Virginia, United States. The population was 22,828 at the 2010 census, an increase of over 44% from 2000. Geography Lincolnia is located in eastern Fairfax County at (38.8184, -77.1433). It is bordered to the east by the city of Alexandria, to the south by Franconia, to the southwest by Springfield, to the west by Annandale, to the northwest by Lake Barcroft, and to the northeast by Bailey's Crossroads. Interstate 395 passes through the southern part of the CDP, with access from Exit 2 (Edsall Road), and Virginia State Route 236 (Little River Turnpike) passes through the center of the CDP. I-395 leads northeast into the District of Columbia, while VA 236 leads east to Old Town Alexandria and west to Fairfax. The CDP border follows Columbia Pike and Holmes Run to the north, its border with the city of Alexandria to the east, Interstate 395, Interstate 495, and the VRE Fredericksburg Line to the south, and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
14th Street Bridge (Potomac River)
The 14th Street bridges refers to the three bridges near each other that cross the Potomac River, connecting Arlington, Virginia and Washington, D.C. Sometimes the two nearby rail bridges are included as part of the 14th Street bridge complex. A major gateway for automotive, bicycle and rail traffic, the bridge complex is named for 14th Street ( U.S. Route 1), which feeds automotive traffic into it on the D.C. end. The complex contains three four-lane automobile bridges — including, from west to east, one southbound, one bi-directional, and one northbound — that carry Interstate 395 (I-395) and U.S. Route 1 (US 1) traffic, as well as a bicycle and pedestrian lane on the southbound bridge. In addition, the complex contains two rail bridges, one of which carries the Yellow Line of the Washington Metro; the other of which, the only mainline rail crossing of the Potomac River to Virginia, carries a CSX Transportation rail line. The five bridges, from west ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alstom 6038 At West Falls Church On Center Track
Alstom SA is a French multinational rolling stock manufacturer operating worldwide in rail transport markets, active in the fields of passenger transportation, signalling, and locomotives, with products including the AGV, TGV, Eurostar, Avelia and New Pendolino high-speed trains, in addition to suburban, regional and metro trains, and Citadis trams. Alsthom (originally Als-Thom) was formed by a merger between Compagnie Française Thomson-Houston and the electric engineering division of Société Alsacienne de Constructions Mécaniques in 1928. Significant later acquisitions included the Constructions Electriques de France (1932), shipbuilder Chantiers de l'Atlantique (1976), and parts of ACEC (Belgium, late-1980s). A merger with parts of the General Electric Company (UK) formed GEC Alsthom in 1989. Throughout the 1990s, the company expanded its holdings in the rail sector, via the acquisition of German rolling stock manufacturer Linke-Hofmann-Busch and Italian rail signa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-revenue Track
Non-revenue track (or trackage), or a non-revenue route, is a section of track or transport route that is not used to carry revenue-earning freight or goods nor for scheduled passenger services. The term is used to refer mainly to sections of track or routes in public transport systems, such as rapid transit and tramway networks, but non-revenue track or routes can also be found in other transport systems. Non-revenue tracks may be used for revenue service during temporary reroutings. See also *Dead mileage *Network length (transport) In transport terminology, network length (or, less often, system length) refers to the total length of a transport network, and commonly also refers to the length of any fixed infrastructure associated with the network. A measurement can be made ... References {{transport-stub Public transport ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
