Oak Square is a former station on the Green Line A branch . It was closed in 1969 when service on the branch was replaced with buses .
129-562: This article relating to the Massachusetts Bay Transportation Authority is a stub . You can help Misplaced Pages by expanding it . This tram-, streetcar-, or light rail-related article is a stub . You can help Misplaced Pages by expanding it . This article related to a building or structure in Boston is a stub . You can help Misplaced Pages by expanding it . This Massachusetts train station–related article
258-659: A Scottish inventor, built a small-scale prototype of a steam road locomotive in Birmingham . A full-scale rail steam locomotive was proposed by William Reynolds around 1787. An early working model of a steam rail locomotive was designed and constructed by steamboat pioneer John Fitch in the US during 1794. Some sources claim Fitch's model was operable already by the 1780s and that he demonstrated his locomotive to George Washington . His steam locomotive used interior bladed wheels guided by rails or tracks. The model still exists at
387-660: A (newly identified) Killingworth Billy in 1816. He also constructed The Duke in 1817 for the Kilmarnock and Troon Railway , which was the first steam locomotive to work in Scotland. In 1825, Stephenson built Locomotion No. 1 for the Stockton and Darlington Railway , north-east England, which was the first public steam railway in the world. In 1829, his son Robert built in Newcastle The Rocket , which
516-448: A balance has to be struck between obtaining sufficient draught for combustion whilst giving the exhaust gases and particles sufficient time to be consumed. In the past, a strong draught could lift the fire off the grate, or cause the ejection of unburnt particles of fuel, dirt and pollution for which steam locomotives had an unenviable reputation. Moreover, the pumping action of the exhaust has the counter-effect of exerting back pressure on
645-486: A crankpin on the driving wheel ( Main driver in the US) or to a crank on a driving axle. The movement of the valves in the steam chest is controlled through a set of rods and linkages called the valve gear , actuated from the driving axle or from the crankpin; the valve gear includes devices that allow reversing the engine, adjusting valve travel and the timing of the admission and exhaust events. The cut-off point determines
774-794: A dedicated tunnel in South Boston and on the surface, elsewhere including the SL1 route that serves Logan Airport . Washington Street service, a belated replacement for the Washington Street Elevated , began in 2002 and was expanded in 2009. Waterfront service began in 2004, with an expansion to Chelsea opened in 2018. MBTA predecessors formerly operated a large trolleybus network , much of which replaced surface streetcar lines. Four lines based out of Harvard station lasted until 2022, when they were replaced with conventional buses. Three Silver Line routes operated as trolleybuses in
903-423: A few dozen to over 2,500. The larger lots and garages are usually near a major highway exit, and most lots fill up during the morning rush hour . There are some 22,000 spaces on the southern portion of the commuter rail system, 9,400 on the northern portion and 14,600 at subway stations. The parking fee ranges from $ 4 to $ 7 per day, and overnight parking (maximum 7 days) is permitted at some stations. Management for
1032-483: A five-line bus rapid transit system (the Silver Line ); MBTA bus local and express service; the twelve-line MBTA Commuter Rail system, and several ferry routes . In 2023, the system had a ridership of 239,981,700, or about 812,400 per weekday as of the third quarter of 2024, of which the rapid transit lines averaged 267,700 and the light rail lines 102,500, making it the fourth-busiest rapid transit system and
1161-429: A gauge mounted in the cab. Steam pressure can be released manually by the driver or fireman. If the pressure reaches the boiler's design working limit, a safety valve opens automatically to reduce the pressure and avoid a catastrophic accident. The exhaust steam from the engine cylinders shoots out of a nozzle pointing up the chimney in the smokebox. The steam entrains or drags the smokebox gases with it which maintains
1290-488: A lower pressure in the smokebox than that under the firebox grate. This pressure difference causes air to flow up through the coal bed and keeps the fire burning. The search for thermal efficiency greater than that of a typical fire-tube boiler led engineers, such as Nigel Gresley , to consider the water-tube boiler . Although he tested the concept on the LNER Class W1 , the difficulties during development exceeded
1419-433: A lower reciprocating mass than three, four, five or six coupled axles. They were thus able to turn at very high speeds due to the lower reciprocating mass. A trailing axle was able to support a huge firebox, hence most locomotives with the wheel arrangement of 4-4-2 (American Type Atlantic) were called free steamers and were able to maintain steam pressure regardless of throttle setting. The chassis, or locomotive frame ,
SECTION 10
#17327869327671548-639: A number of Swiss steam shunting locomotives were modified to use electrically heated boilers, consuming around 480 kW of power collected from an overhead line with a pantograph . These locomotives were significantly less efficient than electric ones ; they were used because Switzerland was suffering a coal shortage because of the War, but had access to plentiful hydroelectricity . A number of tourist lines and heritage locomotives in Switzerland, Argentina and Australia have used light diesel-type oil. Water
1677-461: A number of important innovations that included using high-pressure steam which reduced the weight of the engine and increased its efficiency. Trevithick visited the Newcastle area in 1804 and had a ready audience of colliery (coal mine) owners and engineers. The visit was so successful that the colliery railways in north-east England became the leading centre for experimentation and development of
1806-506: A number of parking lots owned by the MBTA is handled by a private contractor. The 2012 contract with LAZ Parking (which was not its first ) was terminated in 2017 after employees were discovered "skimming" revenue; the company paid $ 5.5 million to settle the case. A new contract with stronger performance incentives and anti-fraud penalties was then awarded to Republic Parking System of Tennessee. Steam locomotive A steam locomotive
1935-490: A number of stations added and rebuilt, especially on the Fairmount Line. Each commuter rail line has up to eleven fare zones, numbered 1A and 1 through 10. Riders are charged based on the number of zones they travel through. Tickets can be purchased on the train, from ticket counters or machines in some rail stations, or with a mobile app called mTicket. If a local vendor or ticket machine is available, riders will pay
2064-459: A rigid frame with a 30% weight reduction. Generally, the largest locomotives are permanently coupled to a tender that carries the water and fuel. Often, locomotives working shorter distances do not have a tender and carry the fuel in a bunker, with the water carried in tanks placed next to the boiler. The tanks can be in various configurations, including two tanks alongside ( side tanks or pannier tanks ), one on top ( saddle tank ) or one between
2193-402: A surcharge for paying with cash on board. Fares range from $ 2.40 to $ 13.25, with multi-ride and monthly passes available, and $ 10 unlimited weekend passes. In 2016, the system averaged 122,600 daily riders, making it the fourth-busiest commuter rail system in the nation. The MBTA boat system comprises several ferry routes via Boston Harbor . One of these is an inner harbor service, linking
2322-401: A tank in the locomotive tender or wrapped around the boiler in the case of a tank locomotive . Periodic stops are required to refill the tanks; an alternative was a scoop installed under the tender that collected water as the train passed over a track pan located between the rails. While the locomotive is producing steam, the amount of water in the boiler is constantly monitored by looking at
2451-405: Is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam . It is fuelled by burning combustible material (usually coal , oil or, rarely, wood ) to heat water in the locomotive's boiler to the point where it becomes gaseous and its volume increases 1,700 times. Functionally, it is a steam engine on wheels. In most locomotives, the steam
2580-743: Is a stub . You can help Misplaced Pages by expanding it . Massachusetts Bay Transportation Authority The Massachusetts Bay Transportation Authority (abbreviated MBTA and known colloquially as " the T ") is the public agency responsible for operating most public transportation services in Greater Boston , Massachusetts. The MBTA transit network includes the MBTA subway with three metro lines (the Blue , Orange , and Red lines), two light rail lines (the Green and Ashmont–Mattapan lines), and
2709-449: Is admitted alternately to each end of its cylinders in which pistons are mechanically connected to the locomotive's main wheels. Fuel and water supplies are usually carried with the locomotive, either on the locomotive itself or in a tender coupled to it. Variations in this general design include electrically powered boilers, turbines in place of pistons, and using steam generated externally. Steam locomotives were first developed in
SECTION 20
#17327869327672838-475: Is crucial to the efficiency of any steam locomotive, and the internal profiles of the chimney (or, strictly speaking, the ejector ) require careful design and adjustment. This has been the object of intensive studies by a number of engineers (and often ignored by others, sometimes with catastrophic consequences). The fact that the draught depends on the exhaust pressure means that power delivery and power generation are automatically self-adjusting. Among other things,
2967-419: Is directed upwards out of the locomotive through the chimney, by way of a nozzle called a blastpipe , creating the familiar "chuffing" sound of the steam locomotive. The blastpipe is placed at a strategic point inside the smokebox that is at the same time traversed by the combustion gases drawn through the boiler and grate by the action of the steam blast. The combining of the two streams, steam and exhaust gases,
3096-519: Is done online, and requires a valid email address and the serial number of the CharlieCard. All bike parking is free of charge. As of 2014 , the MBTA operates park and ride facilities at 103 locations with a total capacity of 55,000 automobiles, and is the owner of the largest number of off-street paid parking spaces in New England. The number of spaces at stations with parking varies from
3225-462: Is provided through contract of the MBTA by Boston Harbor Cruises (BHC). The MBTA contracts out operation of "The Ride", a door to door service for people with disabilities. Paratransit services carry 5,400 passengers on a typical weekday, or 0.47% of the MBTA system ridership. The two private service providers under contractual agreement with the MBTA for The Ride: Veterans Transportation LLC, and National Express Transit (NEXT). In September 2016,
3354-415: Is the principal structure onto which the boiler is mounted and which incorporates the various elements of the running gear. The boiler is rigidly mounted on a "saddle" beneath the smokebox and in front of the boiler barrel, but the firebox at the rear is allowed to slide forward and backwards, to allow for expansion when hot. European locomotives usually use "plate frames", where two vertical flat plates form
3483-624: The Big Dig . However, these projects have strained the MBTA's limited resources, since the Big Dig project did not include funding for these improvements. Since 1988, the MBTA has been the fastest expanding transit system in the country, even as Greater Boston has been one of the slowest growing metropolitan areas in the United States. The MBTA subsequently went into debt, and rates underwent an appreciable hike on January 1, 2007. In 2006,
3612-810: The Boston Elevated Railway in 1947. In the 1950s, the MTA ran new subway extensions, while the last two streetcar lines running into the Pleasant Street Portal of the Tremont Street Subway were substituted with buses in 1953 and 1962. In 1958, the MTA purchased the Highland branch from the Boston and Albany Railroad , reopening it a year later as a rapid transit line (now the Green Line D branch ). While
3741-577: The Boston and Maine Railroad to the north, the New York Central Railroad to the west, and the New York, New Haven and Hartford Railroad to the south. Most branches and one trunk line – the former Old Colony Railroad main – had their passenger services discontinued during the middle of the 20th century. In 1964, the MBTA was formed to fund the failing suburban railroad operations, with an eye towards converting many to extensions of
3870-535: The Central Mass branch (cut back from Hudson to South Sudbury ), West Medway branch (cut back from West Medway to Millis ), Blackstone Line (cut back from Blackstone to Franklin ), and B&M New Hampshire services (cut back from Portsmouth to Newburyport ), these cuts were temporary; however, service on three branch lines (all of them with only one round trip daily: one morning rush-hour trip in to Boston, and one evening rush-hour trip back out to
3999-924: The Drache , was delivered in 1848. The first steam locomotives operating in Italy were the Bayard and the Vesuvio , running on the Napoli-Portici line, in the Kingdom of the Two Sicilies. The first railway line over Swiss territory was the Strasbourg – Basel line opened in 1844. Three years later, in 1847, the first fully Swiss railway line, the Spanisch Brötli Bahn , from Zürich to Baden
Oak Square station - Misplaced Pages Continue
4128-723: The Fairmount Line , the Talbot Avenue station , opened in November 2012. On June 26, 2009, Governor Deval Patrick signed a law to place the MBTA along with other state transportation agencies within the administrative authority of the Massachusetts Department of Transportation (MassDOT), with the MBTA now part of the Mass Transit division (MassTrans). The 2009 transportation law continued
4257-474: The Massachusetts Department of Transportation (MassDOT) in 2009. Mass transportation in Boston was provided by private companies, often granted charters by the state legislature for limited monopolies , with powers of eminent domain to establish a right-of-way , until the creation of the MTA in 1947. Development of mass transportation both followed and shaped economic and population patterns. Shortly after
4386-853: The Middleborough/Lakeville Line . Amtrak runs regularly scheduled intercity rail service over four lines: the Lake Shore Limited over the Framingham/Worcester Line , Acela Express and Northeast Regional services over the Providence/Stoughton Line , and the Downeaster over sections of the Lowell Line and Haverhill Line . Freight trains run by Pan Am Southern , Pan Am Railways , CSX Transportation ,
4515-591: The Ohio Historical Society Museum in Columbus, US. The authenticity and date of this locomotive is disputed by some experts and a workable steam train would have to await the invention of the high-pressure steam engine by Richard Trevithick , who pioneered the use of steam locomotives. The first full-scale working railway steam locomotive was the 3 ft ( 914 mm ) gauge Coalbrookdale Locomotive built by Trevithick in 1802. It
4644-549: The Pennsylvania Railroad class S1 achieved speeds upwards of 150 mph, though this was never officially proven. In the United States, larger loading gauges allowed the development of very large, heavy locomotives such as the Union Pacific Big Boy , which weighs 540 long tons (550 t ; 600 short tons ) and has a tractive effort of 135,375 pounds-force (602,180 newtons). Beginning in
4773-613: The Providence and Worcester Railroad , and the Fore River Railroad also use parts of the network. The first commuter rail service in the United States was operated over what is now the Framingham/Worcester Line beginning in 1834. Within the next several decades, Boston was the center of a massive rail network, with eight trunk lines and dozens of branches. By 1900, ownership was consolidated under
4902-544: The Red Line was extended both north and south, providing not only additional subway system coverage, but also major parking structures at several of the terminal and intermediate stations. In 1981, seventeen people and one corporation were indicted for their roles in a number of kickback schemes at the MBTA. Massachusetts Secretary of Transportation and MBTA Chairman Barry Locke was convicted of five counts of bribery and sentenced to 7 to 10 years in prison. By 1999,
5031-535: The United Kingdom during the early 19th century and used for railway transport until the middle of the 20th century. Richard Trevithick built the first steam locomotive known to have hauled a load over a distance at Pen-y-darren in 1804, although he produced an earlier locomotive for trial at Coalbrookdale in 1802. Salamanca , built in 1812 by Matthew Murray for the Middleton Railway ,
5160-702: The West End Street Railway in the 1880s and electrified over the next decade. The Boston Elevated Railway (BERy) succeeded the West End in 1897; over the next several decades, the BERy built a partially-publicly owned rapid transit system, beginning with the Tremont Street subway in 1897. The BERy came under the control of public trustees in 1919, and was subsumed into the fully-publicly owned Metropolitan Transit Authority (MTA) in 1947. The MTA
5289-517: The four-track-wide segment of the Green Line tunnel between Park Street and Boylston stations was the first subway in the United States, and has been designated a National Historic Landmark . The downtown portions of what are now the Green, Orange, Blue, and Red line tunnels were all in service by 1912. Additions to the rapid transit network occurred in most decades of the 1900s, and continue in
Oak Square station - Misplaced Pages Continue
5418-572: The steam locomotive became practical for mass transportation, the private Boston and Lowell Railroad was chartered in 1830. The rail, which opened in 1835, connected Boston to Lowell , a major northerly mill town in northeast Massachusetts' Merrimack Valley , via one of the oldest railroads in North America . This marked the beginning of the development of American intercity railroads, which in Massachusetts would later become
5547-515: The subways in 1897 and elevated rail in 1901. The Tremont Street subway was the first rapid transit tunnel in the United States. Grade-separation added capacity and avoided delays caused by cross streets. The first elevated railway and the first rapid transit line in Boston were built three years before the first underground line of the New York City Subway , but 34 years after the first London Underground lines, and long after
5676-457: The third-busiest light rail system in the United States. As of the third quarter of 2024, average weekday ridership of the commuter rail system was 109,300, making it the fifth-busiest commuter rail system in the U.S. The MBTA is the successor of several previous public and private operators. Privately operated transit in Boston began with commuter rail in 1834 and horsecar lines in 1856. The various horsecar companies were consolidated under
5805-564: The 2000s with the addition of Silver Line bus rapid transit and planned Green Line expansion. (See History and Future plans sections.) The MBTA bus system, the nation's sixth largest by ridership , has 152 bus routes . Most routes provide local service in the urban core; smaller local networks are also centered around Waltham , Lynn , and Quincy . The system also includes longer routes serving less-dense suburbs, including several express routes. The buses are colored yellow on maps and in station decor. Most routes are directly operated by
5934-610: The 39 bus. The MBTA purchased bus routes in the outer suburbs to the north and south from the Eastern Massachusetts Street Railway in 1968. As with the commuter rail system, many of the outlying routes were dropped shortly before or after the takeover due to low ridership and high operating costs. In the 1970s, the MBTA received a boost from the Boston Transportation Planning Review area-wide re-evaluation of
6063-475: The Commonwealth of Massachusetts for all costs above revenue collected (net cost of service). "Forward funding" introduced at that time consists of a dedicated revenue stream from assessments on served cities and towns, along with a 20% portion of the 5% state sales tax . The Commonwealth assigned to the MBTA responsibility for increasing public transit to compensate for increased automobile pollution from
6192-772: The Green Line, or the Ashmont–Mattapan High-Speed Line segment of the Red Line. Buses equipped with bike racks at the front (including the Silver Line) may always accommodate bicycles, up to the capacity limit of the racks. The MBTA claims that 95% of its buses are now equipped with bike racks. Due to congestion and tight clearances, bicycles are banned from Park Street, Downtown Crossing, and Government Center stations at all times. However, compact folding bicycles are permitted on all MBTA vehicles at all times, provided that they are kept completely folded for
6321-461: The MBTA $ 2.7 billion from the state's five-year transportation bond bill plus more money from the proposed multi-state Transportation and Climate Initiative . A December 2019 report by the MBTA's Fiscal and Management Control Board panel found that "safety is not the priority at the T, but it must be." The report said, "There is a general feeling that fiscal controls over the years may have gone too far, which coupled with staff cutting has resulted in
6450-617: The MBTA Board of Directors safety subcommittee that of 61 recommendations made by the Fiscal and Management Control Board in 2019, two-thirds were complete and one-third were on progress or on hold (including all financial review recommendations). In April 2022, the Federal Transit Administration announced in a letter to MBTA General Manager Steve Poftak that it would assume an increased safety oversight role over
6579-626: The MBTA Commuter Rail system and the Green Line D branch . Starting with the opening of the Cambridge Railroad on March 26, 1856, a profusion of streetcar lines appeared in Boston under chartered companies. Despite the change of companies, Boston is the city with the oldest continuously working streetcar system in the world. Many of these companies consolidated, and animal-drawn vehicles were converted to electric propulsion. Streetcar congestion in downtown Boston led to
SECTION 50
#17327869327676708-743: The MBTA Fiscal and Management Control Board, effective July 17, 2015, with expanded powers to reform the agency during five years. Its term was extended by another year in 2020. Construction of the Green Line Extension , the first expansion to the rail rapid transit system since 1987, began in 2018. In April 2018, the MBTA Silver Line began operating a route from Chelsea to South Station . A June 2019 Red Line derailment resulted in train delays for several months, which brought more attention to capital maintenance problems at
6837-555: The MBTA and would conduct a safety management inspection. As of 2022, the MBTA had reduced its greenhouse gas emissions by 47% from 2009 levels, and now buys or produces 100% renewable electricity. The subway system has three heavy rail rapid transit lines (the Red , Orange and Blue Lines), and two light rail lines (the Green Line and the Ashmont–Mattapan High-Speed Line , the latter designated an extension of
6966-572: The MBTA announced that paratransit users would be able to get rides from Uber and Lyft . Riders would pay $ 2 for a pickup within a few minutes (more for longer trips worth more than $ 15) instead of $ 3.15 for a scheduled pickup the next day. The MBTA would pay $ 13 instead of $ 31 per ride ($ 46 per trip when fixed costs of The Ride are considered). Conventional bicycles are generally allowed on MBTA commuter rail, commuter boat, and rapid transit lines during off-peak hours and all day on weekends and holidays. However, bicycles are not allowed at any time on
7095-557: The MBTA corporate structure and changed the MBTA board membership to the five Governor-appointed members of the Mass DOT Board. In February 2015, there was record breaking snowfall in Boston from the 2014–15 North American winter , which caused lengthy closures of portions of the MBTA subway system, and many long-term operational and financial problems with the entire MBTA system coming under greater public attention, Massachusetts Governor Charlie Baker subsequently announced
7224-401: The MBTA website. The MBTA says that over 95% of its stations are equipped with bike racks, many of them under cover from the weather. In addition, over a dozen stations are equipped with "Pedal & Park" fully enclosed areas protected with video surveillance and controlled door access, for improved security. To obtain access, a personally registered CharlieCard must be used. Registration
7353-404: The MBTA, though several suburban routes are run by private operators under contract to the MBTA. The Silver Line is also operated as part of the MBTA bus system. It is designated as bus rapid transit (BRT), even though it lacks some of the characteristics of bus rapid transit. Two routes run on Washington Street between Nubian station and downtown Boston. Three "waterfront" routes run in
7482-465: The MTC recommended an expansion of the MTA to commuter rail territory. On August 3, 1964, the MBTA succeeded the MTA, with an enlarged service area intended to fund continued commuter rail operations. The original 14-municipality MTA district was expanded to 78 cities and towns. Several lines were briefly cut back while contracts with out-of-district towns were reached, but, except for the outer portions of
7611-512: The Orange and Green Lines (which run approximately parallel in that district) also connect directly at two stations just north of downtown. The Red Line and Blue Line are the only pair of subway lines which do not have a direct transfer connection to each other. Because the various subway lines do not consistently run in any given compass direction , it is customary to refer to line directions as "inbound" or "outbound". Inbound trains travel towards
7740-479: The Red Line). The system operates according to a spoke-hub distribution paradigm , with the lines running radially between central Boston and its environs. It is common usage in Boston to refer to all four of the color-coded rail lines which run underground as "the subway" or "the T", regardless of the actual railcar equipment used. All four subway lines cross downtown, forming a quadrilateral configuration, and
7869-582: The Saar (today part of Völklingen ), but neither could be returned to working order after being dismantled, moved and reassembled. On 7 December 1835, the Adler ran for the first time between Nuremberg and Fürth on the Bavarian Ludwig Railway . It was the 118th engine from the locomotive works of Robert Stephenson and stood under patent protection. In Russia , the first steam locomotive
SECTION 60
#17327869327677998-417: The T. After complaints from many riders and business groups, the governor proposed adding $ 50 million for an independent team to speed up inspections and capital projects, and general efforts to speed up existing capital spending from $ 1 billion to $ 1.5 billion per year. Replacement of the Red Line signal system was accelerated, including equipment that was damaged in the derailment. Baker proposed allocating to
8127-423: The US), or screw-reverser (if so equipped), that controls the cut-off, therefore, performs a similar function to a gearshift in an automobile – maximum cut-off, providing maximum tractive effort at the expense of efficiency, is used to pull away from a standing start, whilst a cut-off as low as 10% is used when cruising, providing reduced tractive effort, and therefore lower fuel/water consumption. Exhaust steam
8256-443: The United States, including John Fitch's miniature prototype. A prominent full sized example was Col. John Steven's "steam wagon" which was demonstrated on a loop of track in Hoboken, New Jersey in 1825. Many of the earliest locomotives for commercial use on American railroads were imported from Great Britain, including first the Stourbridge Lion and later the John Bull . However, a domestic locomotive-manufacturing industry
8385-432: The Waterfront Tunnel using dual-mode buses until these were replaced with hybrid battery buses in 2023. The MBTA Commuter Rail system is a commuter rail network that reaches from Boston into the suburbs of eastern Massachusetts. The system consists of twelve main lines, three of which have two branches. The rail network operates according to a spoke-hub distribution paradigm , with the lines running radially outward from
8514-495: The adhesive weight. Equalising beams connecting the ends of leaf springs have often been deemed a complication in Britain, however, locomotives fitted with the beams have usually been less prone to loss of traction due to wheel-slip. Suspension using equalizing levers between driving axles, and between driving axles and trucks, was standard practice on North American locomotives to maintain even wheel loads when operating on uneven track. Locomotives with total adhesion, where all of
8643-402: The boiler materials to the point where it needs to be rebuilt or replaced. Start-up on a large engine may take hours of preliminary heating of the boiler water before sufficient steam is available. Although the boiler is typically placed horizontally, for locomotives designed to work in locations with steep slopes it may be more appropriate to consider a vertical boiler or one mounted such that
8772-404: The boiler remains horizontal but the wheels are inclined to suit the slope of the rails. The steam generated in the boiler fills the space above the water in the partially filled boiler. Its maximum working pressure is limited by spring-loaded safety valves. It is then collected either in a perforated tube fitted above the water level or by a dome that often houses the regulator valve, or throttle,
8901-399: The boiler. Boiler water surrounds the firebox to stop the metal from becoming too hot. This is another area where the gas transfers heat to the water and is called the firebox heating surface. Ash and char collect in the smokebox as the gas gets drawn up the chimney ( stack or smokestack in the US) by the exhaust steam from the cylinders. The pressure in the boiler has to be monitored using
9030-400: The branches of the Green Line from north to south. Shortages of streetcars, among other factors, caused bustitution of rail service on two branches of the Green Line. The A branch ceased operating entirely in 1969 and was replaced by the 57 bus, while the E branch was truncated from Arborway to Heath Street in 1985, with the section between Heath Street and Arborway being replaced by
9159-449: The city of Boston, with a total of 394 miles (634 km) of revenue trackage. Eight of the lines converge at South Station , with four of these passing through Back Bay station. The other four converge at North Station . There is no passenger connection between the two sides; the Grand Junction Railroad is used for non-revenue equipment moves accessing the maintenance facility . The North–South Rail Link has been proposed to connect
9288-707: The creation of the MetroWest Regional Transit Authority saw several towns subtract their MWRTA assessment from their MBTA assessment, though the amount of funding the MBTA received remained the same. The next year, the MBTA started commuter rail service to the Greenbush section of Scituate , the third branch of the Old Colony service . Rhode Island also paid for extensions of the Providence/Stoughton Line to T.F. Green Airport in 2010 and Wickford Junction in 2012. A new station on
9417-464: The district was expanded further to 175 cities and towns, adding most that were served by or adjacent to commuter rail lines, though the MBTA did not assume responsibility for local service in those communities adjacent to or served by commuter rail. In 2016, the Town of Bourne voted to join the MBTA district, bringing the number of MBTA communities to 176. Prior to July 1, 2000, the MBTA was reimbursed by
9546-689: The dominant fuel worldwide in steam locomotives. Railways serving sugar cane farming operations burned bagasse , a byproduct of sugar refining. In the US, the ready availability and low price of oil made it a popular steam locomotive fuel after 1900 for the southwestern railroads, particularly the Southern Pacific. In the Australian state of Victoria, many steam locomotives were converted to heavy oil firing after World War II. German, Russian, Australian and British railways experimented with using coal dust to fire locomotives. During World War 2,
9675-557: The downtown waterfront with the Boston Navy Yard in Charlestown . The other routes are commuter routes, linking downtown to Hingham , Hull , and Salem . Some commuter services operate via Logan International Airport . All boat services are operated by private sector companies under contract to the MBTA. In FY2005, the MBTA boat system carried 4,650 passengers (0.41% of total MBTA passengers) per weekday. The service
9804-471: The duration of the trip, including passage through faregates. Gasoline -powered vehicles, bike trailers , and Segways are prohibited. No special permit is required to take a bicycle onto an MBTA vehicle, but bicyclists are expected to follow the rules and hours of operation. Cyclists under 16 years old are supposed to be accompanied by a parent or legal guardian. Detailed rules, and an explanation of how to use front-of-bus bike racks and bike parking are on
9933-440: The early 1900s, steam locomotives were gradually superseded by electric and diesel locomotives , with railways fully converting to electric and diesel power beginning in the late 1930s. The majority of steam locomotives were retired from regular service by the 1980s, although several continue to run on tourist and heritage lines. The earliest railways employed horses to draw carts along rail tracks . In 1784, William Murdoch ,
10062-601: The elevated section was cut back slightly and connected to a northwards viaduct extension as part of the Green Line Extension . The old elevated railways proved to be an eyesore and required several sharp curves in Boston's twisty streets. The Atlantic Avenue Elevated was closed in 1938 amidst declining ridership and was demolished in 1942. As rail passenger service became increasingly unprofitable, largely due to rising automobile ownership, government takeover prevented abandonment and dismantlement. The MTA purchased and took over subway, elevated, streetcar, and bus operations from
10191-632: The entire Old Colony Railroad system serving the southeastern part of the state was abandoned by the New Haven Railroad in 1959, triggering calls for state intervention. Between January 1963 and March 1964, the Mass Transportation Commission tested different fare and service levels on the B&;M and New Haven systems. Determining that commuter rail operations were important but could not be financially self-sustaining,
10320-431: The exhaust gas volume was vented through a cooling tower, allowing the steam exhaust to draw more air past the radiator. Running gear includes the brake gear, wheel sets , axleboxes , springing and the motion that includes connecting rods and valve gear. The transmission of the power from the pistons to the rails and the behaviour of the locomotive as a vehicle, being able to negotiate curves, points and irregularities in
10449-476: The existing rapid transit system. The first unified branding of the system was applied on October 8, 1974, with "MBTA Commuter Rail" naming and purple coloration analogous to the four subway lines. The system continued to shrink – mostly with the loss of marginal lines with one daily round trip – until 1981. The system has been expanded since, with four lines restored ( Fairmount Line in 1979, Old Colony Lines in 1997, and Greenbush Line in 2007), six extended, and
10578-679: The extremities of the Orange Line: its northern end was relocated in 1975 from Everett to Malden, Massachusetts , and its southern end was relocated into the Southwest Corridor in 1987. However, the Green Line's Causeway Street Elevated remained in service until 2004, when it was relocated into a tunnel with an incline to reconnect to the Lechmere Viaduct . The Lechmere Viaduct and a short section of steel-framed elevated at its northern end remain in service, though
10707-448: The firebox becomes exposed. Without water on top of the sheet to transfer away the heat of combustion , it softens and fails, letting high-pressure steam into the firebox and the cab. The development of the fusible plug , a temperature-sensitive device, ensured a controlled venting of steam into the firebox to warn the fireman to add water. Scale builds up in the boiler and prevents adequate heat transfer, and corrosion eventually degrades
10836-528: The first elevated railway in New York City; its Ninth Avenue El started operations on July 1, 1868, in Manhattan as an elevated cable car line. Various extensions and branches were added at both ends, bypassing more surface tracks. As grade-separated lines were extended, street-running lines were cut back for faster downtown service. The last elevated heavy rail or "El" segments in Boston were at
10965-632: The formation of a special advisory panel to diagnose the MBTA's problems and write a report recommending proposals to address them. The special advisory panel formed the previous February released its report in April 2015. On March 19, 2015, using a grassroots tool, GovOnTheT, Steve Kropper, and Michele Rapp enlisted 65 Massachusetts General Court legislators to ride the T to the State House, pairing them with 85 TV, radio, electronic, and print reporters. The event responded to widespread anger directed at
11094-602: The former "Orange Street" also was the street that joined the city to the mainland through Boston Neck in colonial times; the Green Line because it runs adjacent to parts of the Emerald Necklace park system; the Blue Line because it runs under Boston Harbor ; and the Red Line because its northernmost station was, at that time, at Harvard University , whose school color is crimson . Opened in September 1897,
11223-449: The four downtown transfer stations , and outbound trains travel away from these hub stations. The Green Line has four branches in the west: B ( Boston College ), C ( Cleveland Circle ), D ( Riverside ), and E ( Heath Street ). The A branch formerly went to Watertown , filling in the north-to-south letter assignment pattern, and the E branch formerly continued beyond Heath Street to Arborway . The Red Line has two branches in
11352-512: The frames ( well tank ). The fuel used depended on what was economically available to the railway. In the UK and other parts of Europe, plentiful supplies of coal made this the obvious choice from the earliest days of the steam engine. Until 1870, the majority of locomotives in the United States burned wood, but as the Eastern forests were cleared, coal gradually became more widely used until it became
11481-444: The governor, state legislators, and MBTA management. The pairings helped to raise awareness of the problems with the T and contributed to its restructuring and refinancing. The next month, Baker appointed a new MassDOT Board of Directors and proposed a five-year winter resiliency plan with $ 83 million being spent to update infrastructure, purchase new equipment, and improve operations during severe weather. A new state law established
11610-418: The grate into an ashpan. If oil is used as the fuel, a door is needed for adjusting the air flow, maintaining the firebox, and cleaning the oil jets. The fire-tube boiler has internal tubes connecting the firebox to the smokebox through which the combustion gases flow transferring heat to the water. All the tubes together provide a large contact area, called the tube heating surface, between the gas and water in
11739-582: The highly mineralised water was available, and locomotive boilers were lasting less than a quarter of the time normally expected. In the days of steam locomotion, about half the total train load was water for the engine. The line's operator, Commonwealth Railways , was an early adopter of the diesel-electric locomotive . The fire-tube boiler was standard practice for steam locomotive. Although other types of boiler were evaluated they were not widely used, except for some 1,000 locomotives in Hungary which used
11868-451: The inability to accomplish required maintenance and inspections, or has hampered work keeping legacy system assets fully functional." In June 2021, the Fiscal and Management Control Board was dissolved, and the following month, Baker signed into law a supplemental budget bill that included a provision creating a permanent MBTA Board of Directors, and Baker appointed the new board the following October. In February 2022, MBTA staff reported to
11997-681: The locomotive ran on a circular track in the factory yard. It was the first locomotive to be built on the European mainland and the first steam-powered passenger service; curious onlookers could ride in the attached coaches for a fee. It is portrayed on a New Year's badge for the Royal Foundry dated 1816. Another locomotive was built using the same system in 1817. They were to be used on pit railways in Königshütte and in Luisenthal on
12126-403: The main chassis, with a variety of spacers and a buffer beam at each end to form a rigid structure. When inside cylinders are mounted between the frames, the plate frames are a single large casting that forms a major support element. The axleboxes slide up and down to give some sprung suspension, against thickened webs attached to the frame, called "hornblocks". American practice for many years
12255-509: The mainframes. Locomotives with multiple coupled-wheels on a rigid chassis would have unacceptable flange forces on tight curves giving excessive flange and rail wear, track spreading and wheel climb derailments. One solution was to remove or thin the flanges on an axle. More common was to give axles end-play and use lateral motion control with spring or inclined-plane gravity devices. Railroads generally preferred locomotives with fewer axles, to reduce maintenance costs. The number of axles required
12384-470: The moment when the valve blocks a steam port, "cutting off" admission steam and thus determining the proportion of the stroke during which steam is admitted into the cylinder; for example a 50% cut-off admits steam for half the stroke of the piston. The remainder of the stroke is driven by the expansive force of the steam. Careful use of cut-off provides economical use of steam and in turn, reduces fuel and water consumption. The reversing lever ( Johnson bar in
12513-551: The operations of the MTA were relatively stable by the early 1960s, the privately operated commuter rail lines were in freefall. The New Haven Railroad , New York Central Railroad , and Boston and Maine Railroad were all financially struggling; deferred maintenance was hurting the mainlines while most branch lines had been discontinued. The 1945 Coolidge Commission plan assumed that most of the commuter rail lines would be replaced by shorter rapid transit extensions, or simply feed into them at reduced service levels. Passenger service on
12642-861: The original John Bull was on static display in the National Museum of American History in Washington, D.C. The replica is preserved at the Railroad Museum of Pennsylvania . The first railway service outside the United Kingdom and North America was opened in 1829 in France between Saint-Etienne and Lyon ; it was initially limited to animal traction and converted to steam traction early 1831, using Seguin locomotives . The first steam locomotive in service in Europe outside of France
12771-468: The piston in turn. In a two-cylinder locomotive, one cylinder is located on each side of the vehicle. The cranks are set 90° out of phase. During a full rotation of the driving wheel, steam provides four power strokes; each cylinder receives two injections of steam per revolution. The first stroke is to the front of the piston and the second stroke to the rear of the piston; hence two working strokes. Consequently, two deliveries of steam onto each piston face in
12900-411: The purpose of which is to control the amount of steam leaving the boiler. The steam then either travels directly along and down a steam pipe to the engine unit or may first pass into the wet header of a superheater , the role of the latter being to improve thermal efficiency and eliminate water droplets suspended in the "saturated steam", the state in which it leaves the boiler. On leaving the superheater,
13029-553: The role of mass transit relative to highways. Producing a moratorium on highway construction inside Route 128 , numerous mass transit lines were planned for expansion by the Voorhees-Skidmore, Owings and Merrill-ESL consulting team. The removal of elevated lines continued, and the closure of the Washington Street Elevated in 1987 brought the end of rapid transit service to the Roxbury neighborhood. Between 1971 and 1985,
13158-418: The side of the piston receiving steam, thus slightly reducing cylinder power. Designing the exhaust ejector became a specific science, with engineers such as Chapelon , Giesl and Porta making large improvements in thermal efficiency and a significant reduction in maintenance time and pollution. A similar system was used by some early gasoline/kerosene tractor manufacturers ( Advance-Rumely / Hart-Parr ) –
13287-421: The south, Ashmont and Braintree , named after their terminal stations . The colors were assigned on August 26, 1965, in conjunction with design standards developed by Cambridge Seven Associates , and have served as the primary identifier for the lines since the 1964 reorganization of the MTA into the MBTA. The Orange Line is so named because it used to run along Orange Street (now lower Washington Street), as
13416-504: The steam exits the dry header of the superheater and passes down a steam pipe, entering the steam chests adjacent to the cylinders of a reciprocating engine. Inside each steam chest is a sliding valve that distributes the steam via ports that connect the steam chest to the ends of the cylinder space. The role of the valves is twofold: admission of each fresh dose of steam, and exhaust of the used steam once it has done its work. The cylinders are double-acting, with steam admitted to each side of
13545-477: The steam locomotive. Trevithick continued his own steam propulsion experiments through another trio of locomotives, concluding with the Catch Me Who Can in 1808, first in the world to haul fare-paying passengers. In 1812, Matthew Murray 's successful twin-cylinder rack locomotive Salamanca first ran on the edge-railed rack-and-pinion Middleton Railway . Another well-known early locomotive
13674-733: The suburbs) was dropped permanently between 1965 and 1976 (the Millis (the new name of the truncated West Medway branch) and Dedham Branches were discontinued in 1967, while the Central Mass branch was abandoned in 1971). The MBTA bought the Penn Central (New York Central and New Haven) commuter rail lines in January 1973, Penn Central equipment in April 1976, and all B&M commuter assets in December 1976; these purchases served to make
13803-544: The success of Rocket at the 1829 Rainhill Trials had proved that steam locomotives could perform such duties. Robert Stephenson and Company was the pre-eminent builder of steam locomotives in the first decades of steam for railways in the United Kingdom, the United States, and much of Europe. Towards the end of the steam era, a longstanding British emphasis on speed culminated in a record, still unbroken, of 126 miles per hour (203 kilometres per hour) by LNER Class A4 4468 Mallard , however there are long-standing claims that
13932-524: The system state-owned with the private railroads retained solely as operators. Only two branch lines were abandoned after 1976: service on the Lexington branch (also with only one round trip daily) was discontinued in January 1977 after a snowstorm blocked the line, while the Lowell Line 's full-service Woburn branch was eliminated in January 1981 due to poor track conditions. The MBTA assigned colors to its four rapid transit lines in 1965, and lettered
14061-434: The track, is of paramount importance. Because reciprocating power has to be directly applied to the rail from 0 rpm upwards, this creates the problem of adhesion of the driving wheels to the smooth rail surface. Adhesive weight is the portion of the locomotive's weight bearing on the driving wheels. This is made more effective if a pair of driving wheels is able to make the most of its axle load, i.e. its individual share of
14190-433: The two cylinders generates a full revolution of the driving wheel. Each piston is attached to the driving axle on each side by a connecting rod, and the driving wheels are connected together by coupling rods to transmit power from the main driver to the other wheels. Note that at the two " dead centres ", when the connecting rod is on the same axis as the crankpin on the driving wheel, the connecting rod applies no torque to
14319-545: The two halves of the system; it would be constructed under the Central Artery tunnel of the Big Dig . Special MBTA trains are run over the Franklin/Foxboro Line and the Providence/Stoughton Line to Foxborough station for New England Patriots home games and other events at Gillette Stadium . The CapeFLYER intercity service, operated on summer weekends, uses MBTA equipment and operates over
14448-419: The water level in a transparent tube, or sight glass. Efficient and safe operation of the boiler requires keeping the level in between lines marked on the sight glass. If the water level is too high, steam production falls, efficiency is lost and water is carried out with the steam into the cylinders, possibly causing mechanical damage. More seriously, if the water level gets too low, the crown sheet (top sheet) of
14577-401: The water-tube Brotan boiler . A boiler consists of a firebox where the fuel is burned, a barrel where water is turned into steam, and a smokebox which is kept at a slightly lower pressure than outside the firebox. Solid fuel, such as wood, coal or coke, is thrown into the firebox through a door by a fireman , onto a set of grates which hold the fuel in a bed as it burns. Ash falls through
14706-408: The wheel. Therefore, if both cranksets could be at "dead centre" at the same time, and the wheels should happen to stop in this position, the locomotive could not start moving. Therefore, the crankpins are attached to the wheels at a 90° angle to each other, so only one side can be at dead centre at a time. Each piston transmits power through a crosshead , connecting rod ( Main rod in the US) and
14835-411: The wheels are coupled together, generally lack stability at speed. To counter this, locomotives often fit unpowered carrying wheels mounted on two-wheeled trucks or four-wheeled bogies centred by springs/inverted rockers/geared rollers that help to guide the locomotive through curves. These usually take on weight – of the cylinders at the front or the firebox at the rear – when the width exceeds that of
14964-406: The will to increase efficiency by that route. The steam generated in the boiler not only moves the locomotive, but is also used to operate other devices such as the whistle, the air compressor for the brakes, the pump for replenishing the water in the boiler and the passenger car heating system. The constant demand for steam requires a periodic replacement of water in the boiler. The water is kept in
15093-878: The world also runs in Austria: the GKB 671 built in 1860, has never been taken out of service, and is still used for special excursions. In 1838, the third steam locomotive to be built in Germany, the Saxonia , was manufactured by the Maschinenbaufirma Übigau near Dresden , built by Prof. Johann Andreas Schubert . The first independently designed locomotive in Germany was the Beuth , built by August Borsig in 1841. The first locomotive produced by Henschel-Werke in Kassel ,
15222-562: Was Puffing Billy , built 1813–14 by engineer William Hedley . It was intended to work on the Wylam Colliery near Newcastle upon Tyne. This locomotive is the oldest preserved, and is on static display at the Science Museum, London . George Stephenson , a former miner working as an engine-wright at Killingworth Colliery , developed up to sixteen Killingworth locomotives , including Blücher in 1814, another in 1815, and
15351-644: Was built in 1834 by Cherepanovs , however, it suffered from the lack of coal in the area and was replaced with horse traction after all the woods nearby had been cut down. The first Russian Tsarskoye Selo steam railway started in 1837 with locomotives purchased from Robert Stephenson and Company . In 1837, the first steam railway started in Austria on the Emperor Ferdinand Northern Railway between Vienna-Floridsdorf and Deutsch-Wagram . The oldest continually working steam engine in
15480-760: Was constructed for the Coalbrookdale ironworks in Shropshire in the United Kingdom though no record of it working there has survived. On 21 February 1804, the first recorded steam-hauled railway journey took place as another of Trevithick's locomotives hauled a train along the 4 ft 4 in ( 1,321 mm )-wide tramway from the Pen-y-darren ironworks, near Merthyr Tydfil , to Abercynon in South Wales. Accompanied by Andrew Vivian , it ran with mixed success. The design incorporated
15609-411: Was dictated by the maximum axle loading of the railroad in question. A builder would typically add axles until the maximum weight on any one axle was acceptable to the railroad's maximum axle loading. A locomotive with a wheel arrangement of two lead axles, two drive axles, and one trailing axle was a high-speed machine. Two lead axles were necessary to have good tracking at high speeds. Two drive axles had
15738-487: Was entered in and won the Rainhill Trials . This success led to the company emerging as the pre-eminent builder of steam locomotives used on railways in the UK, US and much of Europe. The Liverpool and Manchester Railway opened a year later making exclusive use of steam power for passenger and goods trains . Before the arrival of British imports, some domestic steam locomotive prototypes were built and tested in
15867-399: Was in turn succeeded in 1964 by the MBTA, with an expanded funding district to fund declining suburban commuter rail service. In its first two decades, the MBTA took over the commuter rail system from the private operators and continued expansion of the rapid transit system. Originally established as an individual department within the Commonwealth of Massachusetts, the MBTA became a division of
15996-709: Was named The Elephant , which on 5 May 1835 hauled a train on the first line in Belgium, linking Mechelen and Brussels. In Germany, the first working steam locomotive was a rack-and-pinion engine, similar to the Salamanca , designed by the British locomotive pioneer John Blenkinsop . Built in June 1816 by Johann Friedrich Krigar in the Royal Berlin Iron Foundry ( Königliche Eisengießerei zu Berlin),
16125-534: Was opened. The arid nature of south Australia posed distinctive challenges to their early steam locomotion network. The high concentration of magnesium chloride in the well water ( bore water ) used in locomotive boilers on the Trans-Australian Railway caused serious and expensive maintenance problems. At no point along its route does the line cross a permanent freshwater watercourse, so bore water had to be relied on. No inexpensive treatment for
16254-577: Was soon established. In 1830, the Baltimore and Ohio Railroad 's Tom Thumb , designed by Peter Cooper , was the first commercial US-built locomotive to run in America; it was intended as a demonstration of the potential of steam traction rather than as a revenue-earning locomotive. The DeWitt Clinton , built in 1831 for the Mohawk and Hudson Railroad , was a notable early locomotive. As of 2021 ,
16383-403: Was supplied at stopping places and locomotive depots from a dedicated water tower connected to water cranes or gantries. In the UK, the US and France, water troughs ( track pans in the US) were provided on some main lines to allow locomotives to replenish their water supply without stopping, from rainwater or snowmelt that filled the trough due to inclement weather. This was achieved by using
16512-488: Was the first commercially successful steam locomotive. Locomotion No. 1 , built by George Stephenson and his son Robert's company Robert Stephenson and Company , was the first steam locomotive to haul passengers on a public railway, the Stockton and Darlington Railway , in 1825. Rapid development ensued; in 1830 George Stephenson opened the first public inter-city railway, the Liverpool and Manchester Railway , after
16641-404: Was to use built-up bar frames, with the smokebox saddle/cylinder structure and drag beam integrated therein. In the 1920s, with the introduction of "superpower", the cast-steel locomotive bed became the norm, incorporating frames, spring hangers, motion brackets, smokebox saddle and cylinder blocks into a single complex, sturdy but heavy casting. A SNCF design study using welded tubular frames gave
#766233