The New York City Subway is a large fast transit system and has a large fleet of rolling stock.
Video New York City Subway rolling stock
Jumlah armada
Starting November 2016, New York City Subway has 6418 cars on the list. The system has two separate car fleets: one for the IRT route, the other for the BMT/IND route. All BMT/IND equipment is about 10 feet (3.05 m) wide and either 60Ã, feet 6Ã, inch (18.44 m) or 75 feet 6Ã, inches (23.01 m) long while the IRT equipment is about 8 feet 9 inches (2.67 m)) wide and 51 feet (15.54 m) long. Division A and division B train only operate in their own divisions; operating in other divisions is not allowed because the IRT section has a narrower tunnel segment, tighter curves, and a tighter platform spacing than the BMT/IND section. IRT Division Trains will have a huge gap between platform and train if they are allowed in the BMT/IND Division, and BMT/IND trains will not fit in tunnels and IRT stations. The mechanism of trip cock between the divisions is also not appropriate, located on the opposite side of the track and train in each division. The service and maintenance of the train consists of an IRT-sized car. They do not carry passengers and can operate in both divisions because the safety train stops are built on both sides of the truck. However, all rolling stock, either in Division A or B, runs on the same 4.5-foot (435 mm) 4-foot gauge.
There is also a special BMT/IND car fleet, which is used for operations in the Eastern Division of BMT, which is the J, L, M, and Z train. The BMT Eastern Division has a shorter platform, so this train can only use eight cars over 60 feet (18.29 m). In June 2013, the married couple R32 and R42 along with R143 and R160A four sets of cars were assigned to BMT East Division. Cars along 75 feet (22.86 m), such as R44, R46, R68, and R68A are not allowed on BMT Eastern Division tracking due to sharper curves.
The typical revenue train consists of 8 to 10 cars, although the shuttles can be as short as two, G runs 4 car trains, and 7 trains 11 trains. Train lengths range from about 150 to 600 feet (46 to 183 m) in length. As a general rule, railways in the Division A line inherited from the IRT (designated with numbers, plus the 42nd Street Shuttle) are shorter and narrower than those operating on Division B lines inherited from BMT/IND (designated with letters).
When the Brooklyn Rapid Transit Company signed an agreement to operate several new subway lines, they decided to design a new type of car, 10 feet (3.05 m) wide and 67 feet (20.42 m) long. The subject of several patents, a larger car profile similar to a steam train trainer, allows for greater passenger capacity, more comfortable seating, and other benefits. BRT launched its design, established by BMT Standards, to the public in 1913 and received wide acceptance that all future subway lines, whether built for BRT, IRT, or ultimately, IND, were built to handle wider cars.
When R44s and R46s are rebuilt, the rolls on the sides of the car are replaced with electronic LCD signs while the front service sign remains as rollsign. In sharp contrast, R32 and R38 are rebuilt to keep the scrolls on its sides, but the flip-dot screen is placed in front. MTA has incorporated new subway cars into its stocks in the last decade. Since 1999, R142, R142A, R143, R160, and R188 have been added to the service. All cars built since 1992, (including the currently functioning R110A and R110B) are equipped with digital markings on the front, side, and interior (except for R110B, which has a roll on the front).
Old cars, some of the original companies (IRT, BMT and IND), are maintained at the New York Transit Museum, while others are sold to individual individuals and/or other rail/trolley museums.
Between 1984 and 1989 some IRT cars were painted red, giving them the name Redbirds. In September 2010, many older BMT/IND cars (most R32, all R38, all R40, all R40A, almost all R42, and almost all R44) have also retired and replaced with R160.
General Overhaul Program
The General Overhaul (GOH) program is a neglected underground repair program for subway that involves a complete rebuilding of the fleet. Since the completion of the GOH program, the new Scheduled Maintenance (SMS) program has replaced the GOH program by ensuring that trains do not reach the point where they will need such repairs. The types of cars that are part of the MCT program NYCT GOH are IRT Redbirds (R26, R28, R29, R33, R33 WF, R36, R36 WF), as well as IND/BMT cars (R30 GE, R32, R38, R40, R40A, R42, R44 and R46). These cars were rebuilt between 1985 and 1992. Several cars in various classes from R10 to R46 were also given lighter improvements during this period.
"R" -prefixed orders
Cars purchased by New York City since the start of the IND and other divisions beginning in 1948 are identified by the letter "R" followed by the number; for example: R32. This number is the contract number where the car was purchased. Cars with the nearest contract number (eg: R1 via R9, or R21 via R36/WF, or R143 via R160B) may be almost identical, just purchased under different contracts.
The New York City Transportation Council established a documentary system that still exists under the New York City Transit MTA. This includes a letter or mail prefix that indicates the Department that special documentation is followed by a series of long numbers specified by the particular department concerned. For example, the Department of Surface uses the letter "S", while the Quick Transit Department uses the letter "R". A new R number is given for each vehicle purchase that involves the bidding process. Since the 1970s, the system has suffered "R-inflation" only through 46 R-numbers in the first 40 years, but more than 114 in the next 30 years. Possible reasons include an increase in the number of specialized maintenance vehicles previously built at home or downstairs as it requires a formal bidding process to reduce waste and abuse.
Sea disposal
In 2001, the New York City Transit Authority began dumping retired subway cars by throwing them at sea to create artificial reefs, with the aim of promoting marine life. This option is chosen because it is cheaper than removing asbestos from the car; Asbestos is determined not to be a danger in the ocean. Furthermore, artificial reefs will provide environmental and economic benefits, such as providing shelter for marine animals and creating new fishing opportunities. The first reef to be built is the Redbird Reef in Delaware. Finally, some states receive retired subway cars for coral reefs. The program was discontinued in 2010, after more than 2,500 reef cars, as new cars contained more plastics, which were too expensive to dispose economically before they flowed.
Maps New York City Subway rolling stock
Current fleet
Track car geometry
There are four car geometry tracks on the New York City Subway that measure the geometry of the system track to ensure that safe carriage operations are maintained. The cars are numbered TGC1-TGC4. TGC1 was booked under the R59 contract in 1984 for $ 1.4 million. The other three are ordered under the R63 contract and cost $ 2.5 million each. Cars use sensors, measurement systems, and data management systems to get track profiles. The train crew consists of two track equipment managers, one maintenance supervisor, and two to three engineers. Trains usually operate outside office hours during off-hours so they do not interfere with more frequent rush hour services. One car weighs 45 tons. Car size:
- Alignment - "Alignment is the path geometry projection of any rail or centerline path to the horizontal plane," (Definition of FRA). Also known as "straightness" of the track.
- Crosslevel - Variations in the cant track along the specified "chord" length (generally 62 feet or 18.90 meters). On a straight line or tangent, ideally there should be no variation, while on the curve, cant are generally desirable.
- Curvature - The number at which the rail deviates from a straight or a tangent. Car geometry checks the actual curvature (in degree of curvature) curve compared to the curvature of the design.
- Rail gauge - Distance between rails. Over time, the rails may become too wide or too narrow. In North America and most of the world, the standard size is 4 ft 8Ã,½ in (1,435 mm).
- Rail Profile - Looking for rail wear and deviations from a standard profile.
- Warp - Maximum change in cross-level over predefined chord length (generally sixty-two feet).
- Corrosion of the rail surface goes
- Disposal of station and tunnel platforms
- Height of rail and third gauge
- The vertical distance between the third rail and the protective board
The track geometry car usually checks each track span about 6 times a year; cars are operated manually, and there are no plans to automate the track geometry inspection, which is done manually with the help of high-tech equipment over the car.
Future Fleet
Source of the article : Wikipedia
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