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Flat Junction
A level junction (or in the United Kingdom a flat crossing) is a railway junction that has a track configuration in which merging or crossing railroad lines provide track connections with each other that require trains to cross over in front of opposing traffic at grade (i.e. on the level). The cross-over structure is sometimes called a diamond junction or diamond crossing in reference to the diamond-shaped center. The two tracks need not necessarily be of the same gauge. A diamond crossing is also used as a component of a double junction, like the one illustrated on the right. The opposite of a level junction is a flying junction, where individual tracks rise or fall to pass over or under other tracks. Risks Conflicting routes must be controlled by interlocked signals to prevent collisions. Level junctions, particularly those of fine angles or near right angles, create derailment risks and impose speed restrictions. The former can occur as the flanges of the wheels are m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dual Gauge
In railway engineering, "gauge" is the transverse distance between the inner surfaces of the heads of two rails, which for the vast majority of railway lines is the number of rails in place. However, it is sometimes necessary for track to carry railway vehicles with wheels matched to two different gauges. Such track is described as dual gauge – achieved either by addition of a third rail, if it will fit, or by two additional rails. Dual-gauge tracks are more expensive to configure with signals and sidings, and to maintain, than two separate single-gauge tracks. It is therefore usual to build dual-gauge or other multi-gauge tracks only when necessitated by lack of space or when tracks of two different gauges meet in marshalling yards or passenger stations. Dual-gauge tracks are by far the most common configuration, but triple-gauge tracks have been built in some situations. Background The rail gauge is the most fundamental specification of a railway. Rail tracks and whee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BNSF Railway
BNSF Railway is one of the largest freight railroads in North America. One of seven North American Class I railroads, BNSF has 35,000 employees, of track in 28 states, and nearly 8,000 locomotives. It has three transcontinental routes that provide rail connections between the western and eastern United States. BNSF trains traveled over in 2010, more than any other North American railroad. The BNSF Railway Company is the principal operating subsidiary of parent company Burlington Northern Santa Fe, LLC. Headquartered in Fort Worth, Texas, the railroad's parent company is a wholly owned subsidiary of Berkshire Hathaway, Inc., of Omaha, Nebraska. The current CEO is Kathryn Farmer. According to corporate press releases, the BNSF Railway is among the top transporters of intermodal freight in North America. It also hauls bulk cargo, including enough coal to generate around 25% of the electricity produced in the United States. The creation of BNSF started with the formation of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orange Line (Chicago Transit Authority)
The Orange Line is a rapid transit line in Chicago, Illinois, operated by the Chicago Transit Authority as part of the Chicago "L" system. It is approximately long and runs on elevated and at grade tracks and serves the Southwest Side, running from the Loop to Midway International Airport. As of 2021, an average of 11,006 riders board Orange Line trains on weekdays. Route The Orange Line begins in an open cut at a station on the east side of Midway International Airport. From here, the line rises to an elevated viaduct at 55th Street and continues northeast towards the city on railroad right-of-way. Near the intersection of 49th Street and Lawndale Avenue, the line turns east along a CSX right-of-way to a point east of Western Boulevard, then curves north and northwest on embankment structure along CSX right-of-way to Western Boulevard and Pershing Road. From here, the line rises on elevated structure again and makes a curve to cross Archer Avenue, the CSX tracks and Western Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Line (Chicago Transit Authority)
The Green Line is a rapid transit line on the Chicago Transit Authority's "L" system. It is a completely elevated route in the "L" system; all other routes may have various combinations of elevated, subway, street level (at grade), or freeway median sections. The Green Line utilizes the system's oldest segments, dating back to 1892, extending with 30 stops between Oak Park/Forest Park (Harlem/Lake) and Chicago's West Side, to the Loop, and then to the South Side neighborhoods of West Englewood (Ashland/63rd) and Woodlawn (Cottage Grove/63rd). As of 2021, approximately 15,000 passengers board this line each weekday. Route Lake Street Elevated Beginning at the yard and inspection facilities in Forest Park, the Green Line runs east through Oak Park towards the city on an embankment adjacent to Metra's Union Pacific/West Line tracks from the Harlem Avenue terminal, on the border of Oak Park and Forest Park, to a point just west of Laramie Avenue. Here, the Green Line trac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pink Line (Chicago Transit Authority)
The Pink Line is an rapid transit line in Chicago, run by the Chicago Transit Authority (CTA) as part of the Chicago "L" system. It is the CTA's newest rail line and began operation for a 180-day trial period on June 25, 2006, running between 54th/Cermak station in Cicero, Illinois and the Loop in downtown Chicago. The route, as the line is about to enter downtown Chicago, shares tracks with Green Line trains on Lake Street. This connection is handled by the previously non-revenue Paulina Connector set of tracks. In 2021, an average of 7,779 passengers boarded Pink Line trains on weekdays. Operation On the Pink Line, what was once the Blue Line's Cermak branch, begins at 54th Avenue and Cermak Road in Cicero (5400 W. - 2200 S.). The line runs on at-grade tracks parallel to Cermak Road from the terminal to about a quarter-mile (400 m) east of Cicero Avenue, then diagonals northeast until it reaches a corridor parallel and adjacent to 21st Street at Kostner Avenue. It then ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Line (Chicago Transit Authority)
The Brown Line (or the Ravenswood Line) of the Chicago "L" system, is an route with 27 stations between Chicago's Albany Park neighborhood and downtown Chicago. It runs completely above ground and is almost entirely grade-separated. It is the third-busiest 'L' route, with an average of 19,255 passengers boarding each weekday in 2021. Before CTA lines were color-coded in 1993, the Brown Line was known as the Ravenswood Route; specifically, the series of stations from Belmont to Kimball were called the Ravenswood branch. Accordingly, the Kimball-Belmont shuttle service was called the Ravenswood Shuttle. Route The Brown Line begins on the northwest side of Chicago, at the Kimball terminal in Albany Park, where there is a storage yard and servicing shop for the trains to the east of the passenger station. From there, trains operate over street level tracks between Leland and Eastwood Avenues to , then ramp up to the elevated structure for the rest of the trip. The trains on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purple Line (Chicago Transit Authority)
The Purple Line of the Chicago "L" is a route on the northernmost section of the system. Normally, it extends south from in Wilmette, passing through Evanston to , on Chicago's North Side. In 2021, the average weekday boardings on the Purple Line was 3,382. It is the shortest route in the CTA rail system except during weekday peaks and rush hours. During weekday rush hours, the Purple Line extends another south from Howard to downtown Chicago running express from Howard to , with a single stop at , and then making all local stops to the Loop. The express service is known as the Purple Line Express (or the Evanston Express). Prior to the color-coding of CTA rail lines in 1993, the Purple Line was known as the Evanston Line, Evanston Service or Evanston Shuttle, and the Purple Line Express was called the Evanston Express. The Purple Line is useful for reaching Northwestern University ( and stops in Evanston), including the sports facilities Ryan Field, Rocky Miller Park, Wel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago "L"
The Chicago "L" (short for "elevated") is the rapid transit system serving the city of Chicago and some of its surrounding suburbs in the U.S. state of Illinois. Operated by the Chicago Transit Authority (CTA), it is the fourth-largest rapid transit system in the United States in terms of total route length, at long as of 2014, and the second-busiest rail mass transit system in the United States, after the New York City Subway. In 2016, the "L" had 1,492 rail cars, eight different routes, and 145 train stations. In , the system had rides, or about per weekday in . The "L" provides 24-hour service on the Red and Blue Lines and is one of only five rapid transit systems in the United States to do so.The four other rapid transit systems in the U.S. that provide 24-hour service in at least some parts of their systems are the New York City Subway, Staten Island Railway, PATH, and PATCO Speedline. The oldest sections of the "L" started operations in 1892, making it the second-olde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signal Tower
On a rail transport system, signalling control is the process by which control is exercised over train movements by way of railway signals and block systems to ensure that trains operate safely, over the correct route and to the proper timetable. Signalling control was originally exercised via a decentralised network of control points that were known by a variety of names including signal box (International and British), interlocking tower (North America) and signal cabin (some railways e.g., GCR). Currently these decentralised systems are being consolidated into wide scale signalling centres or dispatch offices. Whatever the form, signalling control provides an interface between the human signal operator and the lineside signalling equipment. The technical apparatus used to control switches (points), signals and block systems is called interlocking. History Originally, all signaling was done by mechanical means. Points and signals were operated locally from individual le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Transit Authority
The Chicago Transit Authority (CTA) is the operator of mass transit in Chicago, Illinois, United States, and some of its surrounding suburbs, including the trains of the Chicago 'L' and CTA bus service. In , the system had a ridership of , or about per weekday as of . The CTA is an Illinois independent governmental agency that started operations on October 1, 1947, upon the purchase and combination of the transportation assets of the Chicago Rapid Transit Company and the Chicago Surface Lines streetcar system. In 1952, CTA purchased the assets of the Chicago Motor Coach Company, which was under the control of Yellow Cab Company founder John D. Hertz, resulting in a fully unified system. Today, the CTA is one of the three service boards financially supported by the Regional Transportation Authority and CTA service connects with the commuter rail Metra, and suburban bus and paratransit service, Pace. Operations The Chicago Transit Authority provides service in Chicago a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nottingham To Lincoln Line
Nottingham ( , locally ) is a city and unitary authority area in Nottinghamshire, East Midlands, England. It is located north-west of London, south-east of Sheffield and north-east of Birmingham. Nottingham has links to the legend of Robin Hood and to the lace-making, bicycle and tobacco industries. The city is also the county town of Nottinghamshire and the settlement was granted its city charter in 1897, as part of Queen Victoria's Diamond Jubilee celebrations. Nottingham is a tourist destination; in 2018, the city received the second-highest number of overnight visitors in the Midlands and the highest number in the East Midlands. In 2020, Nottingham had an estimated population of 330,000. The wider conurbation, which includes many of the city's suburbs, has a population of 768,638. It is the largest urban area in the East Midlands and the second-largest in the Midlands. Its Functional Urban Area, the largest in the East Midlands, has a population of 919,484. The populatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Coast Main Line
The East Coast Main Line (ECML) is a electrified railway between London and Edinburgh via Peterborough, Doncaster, York, Darlington, Durham and Newcastle. The line is a key transport artery on the eastern side of Great Britain running broadly parallel to the A1 road. The line was built during the 1840s by three railway companies, the North British Railway, the North Eastern Railway, and the Great Northern Railway. In 1923, the Railway Act of 1921 led to their amalgamation to form the London and North Eastern Railway (LNER) and the line became its primary route. The LNER competed with the London, Midland and Scottish Railway (LMS) for long-distance passenger traffic between London and Scotland. The LNER's chief engineer Sir Nigel Gresley designed iconic Pacific steam locomotives, including '' Flying Scotsman'' and '' Mallard'' which achieved a world record speed for a steam locomotive, on the Grantham-to-Peterborough section. In 1948, the railways were nationalise ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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