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Railroad Yard
A rail yard, railway yard, railroad yard (US) or simply yard, is a series of tracks in a rail network for storing, sorting, or loading and unloading rail vehicles and locomotives. Yards have many tracks in parallel for keeping rolling stock or unused locomotives stored off the main line, so that they do not obstruct the flow of traffic. Cars or wagons are moved around by specially designed yard switchers (US) or shunters, a type of locomotive. Cars or wagons in a yard may be sorted by numerous categories, including railway company, loaded or unloaded, destination, car type, or whether they need repairs. Yards are normally built where there is a need to store rail vehicles while they are not being loaded or unloaded, or are waiting to be assembled into trains. Large yards may have a tower to control operations. Many yards are located at strategic points on a main line. Main-line yards are often composed of an up yard and a down yard, linked to the associated direction of travel. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago (3)
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = List of sovereign states, Country , subdivision_name = United States , subdivision_type1 = U.S. state, State , subdivision_type2 = List of counties in Illinois, Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook County, Illinois, Cook and DuPage County, Illinois, DuPage , established_title = Settled , established_date = , established_title2 = Municipal corporation, Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council government, Mayor–council , governing_body = Chicago City Council , leader_title = Mayor of Chicago, Mayor , leader_name = Lori Lightfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gradient
In vector calculus, the gradient of a scalar-valued differentiable function of several variables is the vector field (or vector-valued function) \nabla f whose value at a point p is the "direction and rate of fastest increase". If the gradient of a function is non-zero at a point , the direction of the gradient is the direction in which the function increases most quickly from , and the magnitude of the gradient is the rate of increase in that direction, the greatest absolute directional derivative. Further, a point where the gradient is the zero vector is known as a stationary point. The gradient thus plays a fundamental role in optimization theory, where it is used to maximize a function by gradient ascent. In coordinate-free terms, the gradient of a function f(\bf) may be defined by: :df=\nabla f \cdot d\bf where ''df'' is the total infinitesimal change in ''f'' for an infinitesimal displacement d\bf, and is seen to be maximal when d\bf is in the direction of the gradi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conway Yard
Conway Yard (also known as Conway Terminal) is a major rail yard located in the boroughs of Conway and Freedom, Pennsylvania, northwest of Pittsburgh, along the Ohio River. It was the largest freight yard in the world from 1956 until 1980.Edwin Kraft, "The Yard: Railroading's Hidden Half.''Trains'' Magazine Vol. 62, No. 6, June 2002. p. 48. It is currently owned by Norfolk Southern (NS) and is one of the largest yards in the United States. History Conway Yard was built in 1884 by the Pittsburgh, Fort Wayne and Chicago Railway, a subsidiary of the Pennsylvania Railroad (PRR). It was expanded in the early 20th century. In 1905, it had a capacity of 8,967 cars and typically processed 2,300 cars per day. The enlargement yard was part of a major PRR expansion that also added the Pennsylvania yards of Altoona Yard, Enola Yard, and Harrisburg Yard. In 1953, the PRR began a $35 million ($ million today) renovation and expansion of the yard. The new eastbound yard opened in 1956, while ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Pacific Railroad
The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Pacific is the second largest railroad in the United States after BNSF, with which it shares a duopoly on transcontinental freight rail lines in the Western, Midwestern and Southern United States. Founded in 1862, the original Union Pacific Rail Road was part of the first transcontinental railroad project, later known as the Overland Route. Over the next century, UP absorbed the Missouri Pacific Railroad, the Chicago and North Western Transportation Company, the Western Pacific Railroad, the Missouri–Kansas–Texas Railroad and the Chicago, Rock Island and Pacific Railroad. In 1996, the Union Pacific merged with Southern Pacific Transportation Company, itself a giant system that was absorbed by the Denver and Rio Grande Western Railroad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Platte, Nebraska
North Platte is a city in and the county seat of Lincoln County, Nebraska, United States. It is located in the west-central part of the state, along Interstate 80, at the confluence of the North and South Platte Rivers forming the Platte River. The population was 23,390 at the 2020 census. North Platte is a railroad town; Union Pacific Railroad's large Bailey Yard is located within the city. Today, North Platte is served only by freight trains, but during World War II the city was known for the North Platte Canteen, a volunteer organization serving food to millions of traveling soldiers. North Platte is the principal city of the North Platte Micropolitan Statistical Area, which includes Lincoln, Logan, and McPherson counties. History North Platte was established in 1866 when the Union Pacific Railroad was extended to that point. It derives its name from the North Platte River. North Platte was the western terminus of the Union Pacific Railway from the summer of 1867 unti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bailey Yard
Bailey Yard is the world’s largest railroad classification yard. Employees sort, service and repair locomotives and cars headed all across North America. Owned and operated by the Union Pacific Railroad (UP), Bailey Yard is located in North Platte, Nebraska. The yard is named after former Union Pacific president Edd H. Bailey. Facilities Bailey Yard is halfway between Denver and Omaha. It covers a total expanse of and is over in length and wide at its widest point; the facility is about wide on average. Bailey Yard has 200 separate tracks totaling of track, 985 switches, 766 turnouts, and 17 receiving and 16 departure tracks. Union Pacific employs more than 2,600 people in North Platte, most of whom are responsible for the day-to-day operations of Bailey Yard. An average of 139 trains and over 14,000 railroad cars pass through Bailey Yard every day. The yard sorts approximately 3,000 cars daily using the yard’s two humps. The eastbound hump is a tall mound, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unit Train
A unit train, also called a block train or a trainload service, is a train in which all cars (wagons) carry the same commodity and are shipped from the same origin to the same destination, without being split up or stored en route. They are distinct from wagonload trains, which comprise differing numbers of cars for various customers. Unit trains enable railways to compete more effectively with road and internal waterway transport systems. Time and money is saved by avoiding the complexities and delays that would otherwise be involved with assembling and disassembling trains at rail yards near the origin and destination. Unit trains are particularly efficient and economical for high-volume commodities. Since they often carry only one commodity, cars are of all the same type; often the cars are identical. Use Unit trains are typically used for the transportation of bulk goods. These can be solid substances such as: * Track ballast or gravel * Iron ore from mines to ports or ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unit Train
A unit train, also called a block train or a trainload service, is a train in which all cars (wagons) carry the same commodity and are shipped from the same origin to the same destination, without being split up or stored en route. They are distinct from wagonload trains, which comprise differing numbers of cars for various customers. Unit trains enable railways to compete more effectively with road and internal waterway transport systems. Time and money is saved by avoiding the complexities and delays that would otherwise be involved with assembling and disassembling trains at rail yards near the origin and destination. Unit trains are particularly efficient and economical for high-volume commodities. Since they often carry only one commodity, cars are of all the same type; often the cars are identical. Use Unit trains are typically used for the transportation of bulk goods. These can be solid substances such as: * Track ballast or gravel * Iron ore from mines to ports or ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Roundhouse
A railway roundhouse is a building with a circular or semicircular shape used by railways for servicing and storing locomotives. Traditionally, though not always the case today, these buildings surrounded or were adjacent to a turntable. Overview Early steam locomotives normally traveled forwards only. Although reverse operations capabilities were soon built into locomotive mechanisms, the controls were normally optimized for forward travel, and the locomotives often could not operate as well in reverse. Some passenger cars, such as observation cars, were also designed as late as the 1960s for operations in a particular direction. Turntables allowed locomotives or other rolling stock to be turned around for the return journey, and roundhouses, designed to radiate around the turntables, were built to service and store these locomotives. Most modern diesel and electric locomotives can run equally well in either direction, and many are push-pull trains with control cabs at ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Pacific Railway
The Canadian Pacific Railway (french: Chemin de fer Canadien Pacifique) , also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), is a Canadian Class I railway incorporated in 1881. The railway is owned by Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001. Headquartered in Calgary, Alberta, the railway owns approximately of track in seven provinces of Canada and into the United States, stretching from Montreal to Vancouver, and as far north as Edmonton. Its rail network also serves Minneapolis–St. Paul, Milwaukee, Detroit, Chicago, and Albany, New York, in the United States. The railway was first built between eastern Canada and British Columbia between 1881 and 1885 (connecting with Ottawa Valley and Georgian Bay area lines built earlier), fulfilling a commitment extended to British Columbia when it entered Confederation in 1871; the CPR was Canada's first transcontinental railway. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian National Railway
The Canadian National Railway Company (french: Compagnie des chemins de fer nationaux du Canada) is a Canadian Class I freight railway headquartered in Montreal, Quebec, which serves Canada and the Midwestern and Southern United States. CN is Canada's largest railway, in terms of both revenue and the physical size of its rail network, spanning Canada from the Atlantic coast in Nova Scotia to the Pacific coast in British Columbia across approximately of track. In the late 20th century, CN gained extensive capacity in the United States by taking over such railroads as the Illinois Central. CN is a public company with 22,600 employees, and it has a market cap of approximately CA$90 billion. CN was government-owned, having been a Canadian Crown corporation from its founding in 1919 until being privatized in 1995. , Bill Gates is the largest single shareholder of CN stock, owning a 14.2% interest through Cascade Investment and his own Bill and Melinda Gates Foundation. Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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