124-455: As of 1910 The Puget Sound Electric Railway was an interurban railway that ran for 38 miles between Tacoma and Seattle , Washington in the first quarter of the 20th century. The railway's reporting mark was "PSE". Portions of the right-of-way still exist as the multi-use Interurban Trail through Fife , Milton , Edgewood , as well as from Pacific to Tukwila, Washington . The PSE began operations on September 25, 1902 with
248-432: A light rail line. Electric railway Railway electrification is the use of electric power for the propulsion of rail transport . Electric railways use either electric locomotives (hauling passengers or freight in separate cars), electric multiple units ( passenger cars with their own motors) or both. Electricity is typically generated in large and relatively efficient generating stations , transmitted to
372-474: A boom in agriculture which lasted through the First World War , but transportation in rural areas was inadequate. Conventional steam railroads made limited stops, mostly in towns. These were supplemented by horse and buggies and steamboats , both of which were slow and the latter of which were restricted to navigable rivers. The increased capacity and profitability of the city street railroads offered
496-531: A few years, interurban railways, including the numerous manufacturers of cars and equipment, were the fifth-largest industry in the country. But due to preference given to automobiles, by 1930, most interurbans in North America had stopped operating. A few survived into the 1950s. Outside of the US, other countries built large networks of high-speed electric tramways that survive today. Notable systems exist in
620-573: A higher total efficiency. Electricity for electric rail systems can also come from renewable energy , nuclear power , or other low-carbon sources, which do not emit pollution or emissions. Electric locomotives may easily be constructed with greater power output than most diesel locomotives. For passenger operation it is possible to provide enough power with diesel engines (see e.g. ' ICE TD ') but, at higher speeds, this proves costly and impractical. Therefore, almost all high speed trains are electric. The high power of electric locomotives also gives them
744-467: A historical concern for double-stack rail transport regarding clearances with overhead lines but it is no longer universally true as of 2022 , with both Indian Railways and China Railway regularly operating electric double-stack cargo trains under overhead lines. Railway electrification has constantly increased in the past decades, and as of 2022, electrified tracks account for nearly one-third of total tracks globally. Railway electrification
868-427: A line that started in downtown Tacoma, ran along Pacific and Puyallup Avenues, followed the course of present-day Pacific Highway through Fife and to Milton , turned southeast towards Puyallup and paralleled the path of today's SR 167 through Pacific , Algona , Auburn , Kent , Orillia and Renton , then into Seattle on its own dedicated right-of-way, via South Park , from there running on surface streets to
992-537: A number of European countries, India, Saudi Arabia, eastern Japan, countries that used to be part of the Soviet Union, on high-speed lines in much of Western Europe (including countries that still run conventional railways under DC but not in countries using 16.7 Hz, see above). Most systems like this operate at 25 kV, although 12.5 kV sections exist in the United States, and 20 kV
1116-457: A power grid that is delivered to a locomotive, and within the locomotive, transformed and rectified to a lower DC voltage in preparation for use by traction motors. These motors may either be DC motors which directly use the DC or they may be three-phase AC motors which require further conversion of the DC to variable frequency three-phase AC (using power electronics). Thus both systems are faced with
1240-566: A progressive loss of their initial passenger service over the years. In 1905, the United States Census Bureau defined an interurban as "a street railway having more than half its trackage outside municipal limits." It drew a distinction between "interurban" and "suburban" railroads. A suburban system was oriented toward a city center in a single urban area and served commuter traffic . A regular railroad moved riders from one city center to another city center and also moved
1364-498: A relative lack of flexibility (since electric trains need third rails or overhead wires), and a vulnerability to power interruptions. Electro-diesel locomotives and electro-diesel multiple units mitigate these problems somewhat as they are capable of running on diesel power during an outage or on non-electrified routes. Different regions may use different supply voltages and frequencies, complicating through service and requiring greater complexity of locomotive power. There used to be
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#17327810406061488-502: A small part of their extensive business empires, which often include real estate, hotels and resorts, and tourist attractions. For example, the Keikyu network has changed unrecognizably from its early days, operating Limited Express services at up to 120 kilometres per hour (75 mph) to compete with JR trains, and inter-operating with subway and Keisei Electric Railway trains on through runs extending up to 200 kilometres (120 mi);
1612-436: A substantial amount of freight. The typical interurban similarly served more than one city, but it served a smaller region and made more frequent stops, and it was oriented to passenger rather than freight service. The development of interurbans in the late nineteenth century resulted from the convergence of two trends: improvements in electric traction, and an untapped demand for transportation in rural areas, particularly in
1736-418: A third rail. The key advantage of the four-rail system is that neither running rail carries any current. This scheme was introduced because of the problems of return currents, intended to be carried by the earthed (grounded) running rail, flowing through the iron tunnel linings instead. This can cause electrolytic damage and even arcing if the tunnel segments are not electrically bonded together. The problem
1860-411: Is derived by using resistors which ensures that stray earth currents are kept to manageable levels. Power-only rails can be mounted on strongly insulating ceramic chairs to minimise current leak, but this is not possible for running rails, which have to be seated on stronger metal chairs to carry the weight of trains. However, elastomeric rubber pads placed between the rails and chairs can now solve part of
1984-451: Is effected by one contact shoe each that slide on top of each one of the running rails . This and all other rubber-tyred metros that have a 1,435 mm ( 4 ft 8 + 1 ⁄ 2 in ) standard gauge track between the roll ways operate in the same manner. Railways and electrical utilities use AC as opposed to DC for the same reason: to use transformers , which require AC, to produce higher voltages. The higher
2108-526: Is electrified, companies often find that they need to continue use of diesel trains even if sections are electrified. The increasing demand for container traffic, which is more efficient when utilizing the double-stack car , also has network effect issues with existing electrifications due to insufficient clearance of overhead electrical lines for these trains, but electrification can be built or modified to have sufficient clearance, at additional cost. A problem specifically related to electrified lines are gaps in
2232-486: Is limited and losses are significantly higher. However, the higher voltages used in many AC electrification systems reduce transmission losses over longer distances, allowing for fewer substations or more powerful locomotives to be used. Also, the energy used to blow air to cool transformers, power electronics (including rectifiers), and other conversion hardware must be accounted for. Standard AC electrification systems use much higher voltages than standard DC systems. One of
2356-480: Is necessarily blurry. Some town streetcar lines evolved into interurban systems by extending streetcar track from town into the countryside to link adjacent towns together and sometimes by the acquisition of a nearby interurban system. Following initial construction, there was a large amount of consolidation of lines. Other interurban lines effectively became light rail systems with no street running whatsoever, or they became primarily freight-hauling railroads because of
2480-730: Is no longer exactly one-third of the grid frequency. This solved overheating problems with the rotary converters used to generate some of this power from the grid supply. In the US , the New York, New Haven, and Hartford Railroad , the Pennsylvania Railroad and the Philadelphia and Reading Railway adopted 11 kV 25 Hz single-phase AC. Parts of the original electrified network still operate at 25 Hz, with voltage boosted to 12 kV, while others were converted to 12.5 or 25 kV 60 Hz. In
2604-638: Is now owned by the state of Indiana and uses mainline-sized electric multiple units . Its last section of street running, in Michigan City, Indiana , was finally closed in 2022 for conversion to a grade-separated double-track line. SEPTA operates two former Philadelphia Suburban lines: the Norristown High Speed Line (Route 100) as an interurban heavy rail line, and the Media–Sharon Hill Line (Routes 101 and 102) as
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#17327810406062728-454: Is slated for construction in 2025. The gaps in the cities of Milton and Edgewood are currently in the design stage, with construction slated to begin in 2026 pending funding. Interurban The interurban (or radial railway in Canada) is a type of electric railway , with tram -like electric self-propelled railcars which run within and between cities or towns. The term "interurban"
2852-447: Is sufficient traffic, the reduced track and especially the lower engine maintenance and running costs exceed the costs of this maintenance significantly. Newly electrified lines often show a "sparks effect", whereby electrification in passenger rail systems leads to significant jumps in patronage / revenue. The reasons may include electric trains being seen as more modern and attractive to ride, faster, quieter and smoother service, and
2976-410: Is that the power-wasting resistors used in DC locomotives for speed control were not needed in an AC locomotive: multiple taps on the transformer can supply a range of voltages. Separate low-voltage transformer windings supply lighting and the motors driving auxiliary machinery. More recently, the development of very high power semiconductors has caused the classic DC motor to be largely replaced with
3100-894: Is the countrywide system. 3 kV DC is used in Belgium, Italy, Spain, Poland, Slovakia, Slovenia, South Africa, Chile, the northern portion of the Czech Republic, the former republics of the Soviet Union , and in the Netherlands on a few kilometers between Maastricht and Belgium. It was formerly used by the Milwaukee Road from Harlowton, Montana , to Seattle, across the Continental Divide and including extensive branch and loop lines in Montana, and by
3224-580: Is the development of powering trains and locomotives using electricity instead of diesel or steam power . The history of railway electrification dates back to the late 19th century when the first electric tramways were introduced in cities like Berlin , London , and New York City . In 1881, the first permanent railway electrification in the world was the Gross-Lichterfelde Tramway in Berlin , Germany. Overhead line electrification
3348-838: Is used on some narrow-gauge lines in Japan. On "French system" HSLs, the overhead line and a "sleeper" feeder line each carry 25 kV in relation to the rails, but in opposite phase so they are at 50 kV from each other; autotransformers equalize the tension at regular intervals. Various railway electrification systems in the late nineteenth and twentieth centuries utilised three-phase , rather than single-phase electric power delivery due to ease of design of both power supply and locomotives. These systems could either use standard network frequency and three power cables, or reduced frequency, which allowed for return-phase line to be third rail, rather than an additional overhead wire. The majority of modern electrification systems take AC energy from
3472-473: Is usually used in North America, with other terms used outside it. They were very prevalent in many parts of the world before the Second World War and were used primarily for passenger travel between cities and their surrounding suburban and rural communities. Interurban as a term encompassed the companies, their infrastructure, their cars that ran on the rails, and their service. In the United States,
3596-652: The Badner Bahn , operates a classic interurban passenger service, in addition to some freight services. Some interurban lines survive today a local railways in Upper Austria are such as the Linzer Lokalbahn , Lokalbahn Vöcklamarkt–Attersee and Lokalbahn Lambach–Vorchdorf-Eggenberg . While others operate as extension of as local city tramways such as the Traunseebahn which is now connected to
3720-656: The Delaware, Lackawanna and Western Railroad (now New Jersey Transit , converted to 25 kV AC) in the United States, and the Kolkata suburban railway (Bardhaman Main Line) in India, before it was converted to 25 kV 50 Hz. DC voltages between 600 V and 750 V are used by most tramways and trolleybus networks, as well as some metro systems as the traction motors accept this voltage without
3844-463: The Gmunden Tramway . Today, two surviving interurban networks descending from the vicinal tramways exist in Belgium. The famous Belgian Coast Tram , built in 1885, traverses the entire Belgian coastline and, at a length of 68 kilometres (42 mi), which is the longest tram line in the world. The Charleroi Metro is a never fully completed pre-metro network upgraded and developed from
Puget Sound Electric Railway - Misplaced Pages Continue
3968-711: The HSL-Zuid and Betuwelijn , and 3,000 V south of Maastricht . In Portugal, it is used in the Cascais Line and in Denmark on the suburban S-train system (1650 V DC). In the United Kingdom, 1,500 V DC was used in 1954 for the Woodhead trans-Pennine route (now closed); the system used regenerative braking , allowing for transfer of energy between climbing and descending trains on
4092-518: The Hardt Railway . Other examples include: Milan operates one remaining interurban tramway to Limbiate with another interurban route to Carate Brianza / Giussano suspended since 2011. These two lines were once part of large network of interurbans surrounding Milan that were gradually closed in the 1970s. In Japan, the vast majority of the major sixteen private railways have roots as interurban electric railway lines that were inspired by
4216-701: The Innovia ART system. While part of the SkyTrain network, the Canada Line does not use this system and instead uses more traditional motors attached to the wheels and third-rail electrification. A few lines of the Paris Métro in France operate on a four-rail power system. The trains move on rubber tyres which roll on a pair of narrow roll ways made of steel and, in some places, of concrete . Since
4340-706: The Japan Railways Group along highly congested corridors is a hallmark of suburban railway operations in Japan. For example, on the Osaka to Kobe corridor, JR West competes intensely with both Hankyu Kobe Line and Hanshin Main Line trains in terms of speed, convenience and comfort. However, a number of urban lines in Japan did close as late as the 2000s, with networks in Kitakyushu and Gifu being shut down. Between Vienna and Baden bei Wien
4464-667: The Japanese National Railways network at the time. The (former JNR) Hanwa Line was a wartime acquisition from Nankai, operating 'Super Express' trains on the line at an average speed of 81.6 kilometres per hour (50.7 mph), a national record at the time. The old Sendai station terminus of the Miyagi Electric Railway (the predecessor of the JR Senseki Line ) was situated in a short single-track underground tunnel built in 1925; this
4588-1023: The Long Beach Line in Long Beach and Los Angeles, California (this was the last remaining part of the Pacific Electric system). The Long Beach Line was cut in 1961, the North Shore Line in 1963; the Philadelphia Suburban's route 103 and the NYS&;W in New Jersey both ended passenger service in 1966. Today, only the South Shore Line, Norristown High Speed Line (SEPTA Route 100), and SEPTA Routes 101/102 remain. Some former interurban lines retained freight service for up to several decades after
4712-533: The Low Countries , Poland and Japan , where populations are densely packed around large conurbations such as the Randstad , Upper Silesia , Greater Tokyo Area and Keihanshin . Switzerland, particularly, has a large network of mountain narrow-gauge interurban lines. In addition, since the early 21st century many tram-train lines are being built, especially in France and Germany but also elsewhere in
4836-841: The Meitetsu opened their first interurban lines in 1912, what today form parts of the Meitetsu Inuyama Line and Tsushima Line . In 1913, the first section of what will become the Keiō Line opened connecting Chōfu to just outside Shinjuku with street running on what is today the Kōshū Kaidō or National Route 20 . Kyushu Electric Railroad, predecessor to Nishitetsu opened its first interurban line in 1914 serving Kitakyushu and surrounding areas, taking heavy inspiration from Hanshin Electric Railway . The fortunes of
4960-552: The Midwestern United States . The 1880s saw the first successful deployments of electric traction in streetcar systems. Most of these built on the pioneering work of Frank J. Sprague , who developed an improved method for mounting an electric traction motor and using a trolley pole for pickup. Sprague's work led to widespread acceptance of electric traction for streetcar operations and end of horse-drawn trams. The late nineteenth-century United States witnessed
5084-573: The Southern Railway serving Coulsdon North and Sutton railway station . The lines were electrified at 6.7 kV 25 Hz. It was announced in 1926 that all lines were to be converted to DC third rail and the last overhead-powered electric service ran in September 1929. AC power is used at 60 Hz in North America (excluding the aforementioned 25 Hz network), western Japan, South Korea and Taiwan; and at 50 Hz in
Puget Sound Electric Railway - Misplaced Pages Continue
5208-461: The United States , the New York, New Haven and Hartford Railroad was one of the first major railways to be electrified. Railway electrification continued to expand throughout the 20th century, with technological improvements and the development of high-speed trains and commuters . Today, many countries have extensive electrified railway networks with 375 000 km of standard lines in
5332-403: The steam railroads , led to reduced ridership in the early 1920s and a decision to shut down operations was made by the operators. Despite protests, the interurban was allowed to suspend operations by a federal judge in a ruling made on October 13, 1928. The final trains ran on December 30, 1928. The rails were not pulled up until 1930. The financial and competitive challenges that ultimately led
5456-589: The 1970s, the remaining interurban tramways have enjoyed somewhat of a renaissance in the form of the Sneltram , a modern light rail system that uses high floor, metro-style vehicles and could interoperate into metro networks. Various other interurbans in Europe were folded into local municipal tramway or light rail systems. Switzerland retained many of its interurban lines which now operate as tramways, local railways, S-Bahn, or tram-trains. Milan's vast interurban network
5580-551: The Netherlands a line from The Hague to Delft. Which opened as horse-tramway in 1866. Nowadays the line operates as Line 1 of The Hague Tramway . Line E, run by Randstadrail , was an interurban line connecting Rotterdam to The Hague and in the past also to Scheveningen. It now interoperates with the Rotterdam Metro . A large interurban network called the Silesian Interurbans still exists today connecting
5704-581: The Netherlands in earnest with the founding of the Tramweg Stichting (Tramway Foundation). Many systems, such as the Hague tramway and the Rotterdam tramway , included long interurban extensions which were operated with larger, higher-speed cars. In close parallel to North America, many systems were abandoned from the 1950s after tram companies switched to buses. Instigated by the oil crisis in
5828-717: The Netherlands, New Zealand ( Wellington ), Singapore (on the North East MRT line ), the United States ( Chicago area on the Metra Electric district and the South Shore Line interurban line and Link light rail in Seattle , Washington). In Slovakia, there are two narrow-gauge lines in the High Tatras (one a cog railway ). In the Netherlands it is used on the main system, alongside 25 kV on
5952-628: The PSE exist today as the multi-use Interurban Trail in Fife , Milton , Edgewood , Pacific , Algona , Auburn , Kent , and Tukwila . It links Pierce County and King County although there are a few remaining gaps in the trail (in Milton, Edgewood, and Sumner ) as of 2024. The gap in Sumner (not originally part of the PSE railway, but part of the modern day Interurban Trail) has been designed and funded and
6076-745: The UK, the London, Brighton and South Coast Railway pioneered overhead electrification of its suburban lines in London, London Bridge to Victoria being opened to traffic on 1 December 1909. Victoria to Crystal Palace via Balham and West Norwood opened in May 1911. Peckham Rye to West Norwood opened in June 1912. Further extensions were not made owing to the First World War. Two lines opened in 1925 under
6200-409: The US during their heyday. While most interurbans in Japan have been upgraded beyond recognition to high-capacity urban railways, a handful have remained relatively untouched, with street running and using 'lighter-rail' stock. To this day they retain a distinct character similar to classic American interurbans. These include: The only surviving interurban line is also the oldest regional tramway in
6324-739: The US. But instead of demolishing their trackage in the 1930s, many Japanese interurbans companies upgraded their networks to heavy rail standards, becoming today's large private railways. To this day, private railway companies in Japan operate as highly influential business empires with diverse business interests, encompassing department stores, property developments and even tourist resorts. Many Japanese private railway companies compete with each other for passengers, operate department stores at their city termini, develop suburban properties adjacent to stations they own, and run special tourist attractions with admission included in package deals with rail tickets; similar to operations of large interurban companies in
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#17327810406066448-454: The United States, particularly in the states of Indiana, Ohio, Pennsylvania, Illinois, Iowa, Utah, and California. In 1900, 2,107 miles (3,391 km) of interurban track existed, but by 1916, this had increased to 15,580 miles (25,070 km), a seven-fold expansion. At one point in time beginning in 1901, it was possible to travel from Elkhart Lake, Wisconsin , to Little Falls, New York , exclusively by interurban. During this expansion, in
6572-494: The ability to pull freight at higher speed over gradients; in mixed traffic conditions this increases capacity when the time between trains can be decreased. The higher power of electric locomotives and an electrification can also be a cheaper alternative to a new and less steep railway if train weights are to be increased on a system. On the other hand, electrification may not be suitable for lines with low frequency of traffic, because lower running cost of trains may be outweighed by
6696-516: The advantages of raising the voltage is that, to transmit certain level of power, lower current is necessary ( P = V × I ). Lowering the current reduces the ohmic losses and allows for less bulky, lighter overhead line equipment and more spacing between traction substations, while maintaining power capacity of the system. On the other hand, the higher voltage requires larger isolation gaps, requiring some elements of infrastructure to be larger. The standard-frequency AC system may introduce imbalance to
6820-634: The area near Pioneer Square . There it terminated at Occidental Way and Yesler Way in front of the Interurban Building , then known as the Pacific Block when the depot was located in the building's corner room from 1902 to 1928. From there it interchanged with other interurbans and street car lines in the area. At its peak the line saw 27 daily departures and arrivals split between the Tacoma and Renton branches with trains running from 7 in
6944-523: The border of the neighbouring City of Mississauga , unlike other Toronto radial lines which were all abandoned outside of the 1960s boundary of the City of Toronto . In Germany various networks have continued to operate. Karlsruhe revitalized the interurban concept into the Karlsruhe model by renovating two local railways Alb Valley Railway , which already had interoperability with local tram trackage, and
7068-519: The country's railway infrastructure and cater to the post-war baby boom. The companies continued their policies of improvement they had followed before the war; lines were reconstructed to allow higher speeds, mainline-sized trains were adopted, street-running sections were rebuilt to elevated or underground rights-of-way, and link lines to growing metro systems were built to allow for through operations. Many of these private railway companies started to adopt standards for full-blown heavy rail lines similar to
7192-629: The dense vicinal tramway network around the city. Similar to the United States, in Canada most passenger interurbans were removed by the 1950s. One example of continuous passenger service still exists today, the Toronto Transit Commission 501 Queen streetcar line. The western segment of the 501 Streetcar operates largely on what was the T&;YRR Port Credit Radial Line, a radial line that remains intact through Etobicoke and up to
7316-412: The discontinuance of passenger service. Most were converted to diesel operation, although the Sacramento Northern Railway retained electric freight until 1965. After World War II , many interurbans in other countries were also cut back. In Belgium, as intercity transport shifted to cars and buses; the large sections of the vicinal tramways were gradually shut down by the 1980s. At their peak in 1945,
7440-410: The distance they could transmit power. However, in the early 20th century, alternating current (AC) power systems were developed, which allowed for more efficient power transmission over longer distances. In the 1920s and 1930s, many countries worldwide began to electrify their railways. In Europe, Switzerland , Sweden , France , and Italy were among the early adopters of railway electrification. In
7564-418: The early 1900s interurban was a valuable economic institution, when most roads between towns, many town streets were unpaved, and transportation and haulage was by horse-drawn carriages and carts. The interurban provided reliable transportation, particularly in winter weather, between towns and countryside. In 1915, 15,500 miles (24,900 km) of interurban railways were operating in the United States and, for
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#17327810406067688-426: The early 1900s with some assistance from Thomas Edison . By the 1930s a vast network of interurbans, the Società Trazione Elettrica Lombarda , connected Milan with surrounding towns. In the first half of the 20th century, an extensive tramway network covered Northern England , centered on South Lancashire and West Yorkshire . At that time, it was possible to travel entirely by tram from Liverpool Pier Head to
7812-419: The east at 339 miles (546 km) and had provided Pittsburgh-area coal country towns with hourly transportation since 1888. By the 1960s only five remaining interurban lines served commuters in three major metropolitan areas: the North Shore Line and the South Shore Line in Chicago, the Philadelphia Suburban Transportation Company, the New York, Susquehanna and Western Railway in northern New Jersey, and
7936-448: The electrification. Electric vehicles, especially locomotives, lose power when traversing gaps in the supply, such as phase change gaps in overhead systems, and gaps over points in third rail systems. These become a nuisance if the locomotive stops with its collector on a dead gap, in which case there is no power to restart. This is less of a problem in trains consisting of two or more multiple units coupled together, since in that case if
8060-404: The end of funding. Most electrification systems use overhead wires, but third rail is an option up to 1,500 V. Third rail systems almost exclusively use DC distribution. The use of AC is usually not feasible due to the dimensions of a third rail being physically very large compared with the skin depth that AC penetrates to 0.3 millimetres or 0.012 inches in a steel rail. This effect makes
8184-440: The experiment was curtailed. In 1970 the Ural Electromechanical Institute of Railway Engineers carried out calculations for railway electrification at 12 kV DC , showing that the equivalent loss levels for a 25 kV AC system could be achieved with DC voltage between 11 and 16 kV. In the 1980s and 1990s 12 kV DC was being tested on the October Railway near Leningrad (now Petersburg ). The experiments ended in 1995 due to
8308-500: The fact that electrification often goes hand in hand with a general infrastructure and rolling stock overhaul / replacement, which leads to better service quality (in a way that theoretically could also be achieved by doing similar upgrades yet without electrification). Whatever the causes of the sparks effect, it is well established for numerous routes that have electrified over decades. This also applies when bus routes with diesel buses are replaced by trolleybuses. The overhead wires make
8432-1012: The general power grid. This is especially useful in mountainous areas where heavily loaded trains must descend long grades. Central station electricity can often be generated with higher efficiency than a mobile engine/generator. While the efficiency of power plant generation and diesel locomotive generation are roughly the same in the nominal regime, diesel motors decrease in efficiency in non-nominal regimes at low power while if an electric power plant needs to generate less power it will shut down its least efficient generators, thereby increasing efficiency. The electric train can save energy (as compared to diesel) by regenerative braking and by not needing to consume energy by idling as diesel locomotives do when stopped or coasting. However, electric rolling stock may run cooling blowers when stopped or coasting, thus consuming energy. Large fossil fuel power stations operate at high efficiency, and can be used for district heating or to produce district cooling , leading to
8556-411: The high cost of the electrification infrastructure. Therefore, most long-distance lines in developing or sparsely populated countries are not electrified due to relatively low frequency of trains. Network effects are a large factor with electrification. When converting lines to electric, the connections with other lines must be considered. Some electrifications have subsequently been removed because of
8680-408: The industry in the US and Canada declined during World War I , particularly into the early 1920s. In 1919 President Woodrow Wilson created the Federal Electric Railways Commission to investigate the financial problems of the industry. The commission submitted its final report to the President in 1920. The commission's report focused on financial management problems and external economic pressures on
8804-522: The industry, and recommended against introducing public financing for the interurban industry. One of the commission's consultants, however, published an independent report stating that private ownership of electric railways had been a failure, and only public ownership would keep the interurbans in business. Many interurbans had been hastily constructed without realistic projections of income and expenses. They were initially financed by issuing stock and selling bonds. The sale of these financial instruments
8928-656: The interurban whose private tax paying tracks could never compete with the highways that a generous government provided for the motorist." William D. Middleton , in the opening of his 1961 book The Interurban Era , wrote: "Evolved from the urban streetcar, the Interurban appeared shortly before the dawn of the 20th century, grew to a vast network of over 18,000 miles in two decades of excellent growth, and then all but vanished after barely three decades of usefulness." Interurban business increased during World War II due to fuel oil rationing and large wartime employment. When
9052-497: The interurbans were the fifth-largest industry in the United States. In Belgium , a sprawling, nation-wide system of narrow-gauge vicinal tramways have been built by the NMVB / SNCV to provide transport to smaller towns across the country; the first section opened in 1885. These lines were either electrically operated or run with diesel tramcars, included numerous street-running sections, and inter-operated with local tram networks in
9176-448: The larger cities. Similar to Belgium, Netherlands constructed a large network of interurbans in the early 1900s called streektramlijnen . In Silesia, today Poland, an extensive interurban system was constructed, starting in 1894 with a narrow-gauge line connecting Gliwice with Piekary Śląskie through Zabrze , Chebzie , Chorzów and Bytom , another connected Katowice and Siemianowice . After four years, in 1898, Kramer & Co.
9300-608: The line was legally defined as a tramway and included street running at the two ends, but was based on American interurbans and operated with large tramcars on mostly private right-of-way. In the same year, the Keihin Express Railway , or Keikyu, completed a section of what is today part of the Keikyū Main Line between Shinagawa , Tokyo and Kanagawa , Yokohama . This line competes with mainline Japanese National Railways on this busy corridor. Predecessors of
9424-648: The long Cincinnati & Lake Erie Railroad (C&LE), and in Indiana with the very widespread Indiana Railroad . Both had limited success up to 1937–1938 and primarily earned growing revenues from freight rather than passengers. The 130-mile (210 km) long Sacramento Northern Railway stopped carrying passengers in 1940 but continued hauling freight into the 1960s by using heavy electric locomotives. Oliver Jensen, author of American Heritage History of Railroads in America , commented that "...the automobile doomed
9548-497: The losses (saving 2 GWh per year per 100 route-km; equalling about €150,000 p.a.). The line chosen is one of the lines, totalling 6000 km, that are in need of renewal. In the 1960s the Soviets experimented with boosting the overhead voltage from 3 to 6 kV. DC rolling stock was equipped with ignitron -based converters to lower the supply voltage to 3 kV. The converters turned out to be unreliable and
9672-422: The maximum power that can be transmitted, also can be responsible for electrochemical corrosion due to stray DC currents. Electric trains need not carry the weight of prime movers , transmission and fuel. This is partly offset by the weight of electrical equipment. Regenerative braking returns power to the electrification system so that it may be used elsewhere, by other trains on the same system or returned to
9796-532: The mileage of vicinal tramways reached 4,811 kilometres (2,989 mi) and exceeded the length of the national railway network. Sprawling tram networks in the Netherlands extended to neighbouring cities. The vast majority of these lines were not electrified and operated with steam and sometimes petrol or diesel tramcars. Many did not survive the 1920s and 30s for the same reasons American interurbans went bust, but those that did were put back into service during
9920-462: The morning to midnight. Power was supplied via overhead wire in urban areas, and third rail in rural areas. The third rail was the cause of several accidents throughout the PSE's operations which involved livestock or people being electrocuted, and in some cases dead cows caused accidents involving the trolleys themselves. The railroad ran for 26 years, until competition from trucks, buses, and automobiles on an ever-expanding road network, as well as
10044-607: The mountain spa resort of Hakone. Many private lines were nationalised during the Second World War. The handful that remained in the hands of JNR after the end of the war – including the Hanwa Line, Senseki Line and the Iida Line – remain outliers on the national JR network, with short station distances, (in the case of the Iida Line) lower-grade infrastructure, and independent termini (such as Aobadori Station and
10168-574: The national rail network, and, like JR commuter routes, are operated as 'metro-style' commuter railways with mainline-sized vehicles and metro-like frequencies of very few minutes. In 1957, the Odakyu Electric Railway introduced the Odakyu 3000 series SE , the first in a line of luxurious tourist Limited Express trains named ' Romancecars '. These units set a narrow-gauge speed record of 145 kilometres per hour (90 mph) on its runs to
10292-402: The need for overhead wires between those stations. Maintenance costs of the lines may be increased by electrification, but many systems claim lower costs due to reduced wear-and-tear on the track from lighter rolling stock. There are some additional maintenance costs associated with the electrical equipment around the track, such as power sub-stations and the catenary wire itself, but, if there
10416-545: The original narrow gauge network was converted to standard, which allowed a connection with the new system in Sosnowiec. By 1931, 47,5% of the narrow-gauge network was reconstructed, with 20 kilometres (12 mi) of new standard-gauge track built. A large network of interurbans started developing around Milan in the late 1800s; they were originally drawn by horses and later powered as steam trams. These initial interurban lines were gradually upgraded with electric traction in
10540-505: The phase separation between the electrified sections powered from different phases, whereas high voltage would make the transmission more efficient. UIC conducted a case study for the conversion of the Bordeaux-Hendaye railway line (France), currently electrified at 1.5 kV DC, to 9 kV DC and found that the conversion would allow to use less bulky overhead wires (saving €20 million per 100 route-km) and lower
10664-614: The possibility of extending them into the countryside to reach new markets, even linking to other towns. The first interurban to emerge in the United States was the Newark and Granville Street Railway in Ohio, which opened in 1889. It was not a major success, but others followed. The development of the automobile was then in its infancy, and to many investors interurbans appeared to be the future of local transportation. From 1900 to 1916, large networks of interurban lines were constructed across
10788-508: The problem by insulating the running rails from the current return should there be a leakage through the running rails. The Expo and Millennium Line of the Vancouver SkyTrain use side-contact fourth-rail systems for their 650 V DC supply. Both are located to the side of the train, as the space between the running rails is occupied by an aluminum plate, as part of stator of the linear induction propulsion system used on
10912-521: The rail business altogether ran afoul of state commissions which required that trains remain running "for the public good", even at a loss. Many financially weak interurbans did not survive the prosperous 1920s, and most others went bankrupt during the Great Depression . A few struggling lines tried combining to form much larger systems in an attempt to gain operating efficiency and a broader customer base. This occurred in Ohio in year 1930 with
11036-541: The railroad to cease operation came from a variety of factors: not only the increasing availability of cars, but also the existence of ferry services, bus services, and streetcar services along its route. Its fares were also constrained by the regulations of the Railroad Commission of Washington , which explicitly sought to limit its profits. It was headquartered in Kent , Washington. As of 1910. Portions of
11160-477: The railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines , but most purchase power from an electric utility . The railway usually provides its own distribution lines, switches, and transformers . Power is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of two forms: an overhead line , suspended from poles or towers along
11284-423: The regions where they operated, particularly in Ohio and Indiana, "...they almost destroyed the local passenger service of the steam railroad." To show how exceptionally busy the interurbans radiating from Indianapolis were in 1926, the immense Indianapolis Traction Terminal (nine roof covered tracks and loading platforms) scheduled 500 trains in and out daily and moved 7 million passengers that year. At their peak
11408-562: The repair costs. The rise of private automobile traffic in the middle 1920s aggravated such trends. As the interurban companies struggled financially, they faced rising competition from cars and trucks on newly paved streets and highways, while municipalities sought to alleviate traffic congestion by removing interurbans from city streets. Some companies exited the passenger business altogether to focus on freight, while others sought to buttress their finances by selling surplus electricity in local communities. Several interurbans that attempted to exit
11532-465: The resistance per unit length unacceptably high compared with the use of DC. Third rail is more compact than overhead wires and can be used in smaller-diameter tunnels, an important factor for subway systems. The London Underground in England is one of few networks that uses a four-rail system. The additional rail carries the electrical return that, on third-rail and overhead networks, is provided by
11656-570: The revenue obtained for freight and passenger traffic. Different systems are used for urban and intercity areas; some electric locomotives can switch to different supply voltages to allow flexibility in operation. Six of the most commonly used voltages have been selected for European and international standardisation. Some of these are independent of the contact system used, so that, for example, 750 V DC may be used with either third rail or overhead lines. There are many other voltage systems used for railway electrification systems around
11780-498: The running rails. On the London Underground, a top-contact third rail is beside the track, energized at +420 V DC , and a top-contact fourth rail is located centrally between the running rails at −210 V DC , which combine to provide a traction voltage of 630 V DC . The same system was used for Milan 's earliest underground line, Milan Metro 's line 1 , whose more recent lines use an overhead catenary or
11904-467: The same task: converting and transporting high-voltage AC from the power grid to low-voltage DC in the locomotive. The difference between AC and DC electrification systems lies in where the AC is converted to DC: at the substation or on the train. Energy efficiency and infrastructure costs determine which of these is used on a network, although this is often fixed due to pre-existing electrification systems. Both
12028-569: The steep approaches to the tunnel. The system was also used for suburban electrification in East London and Manchester , now converted to 25 kV AC. It is now only used for the Tyne and Wear Metro . In India, 1,500 V DC was the first electrification system launched in 1925 in Mumbai area. Between 2012 and 2016, the electrification was converted to 25 kV 50 Hz, which
12152-443: The supply grid, requiring careful planning and design (as at each substation power is drawn from two out of three phases). The low-frequency AC system may be powered by separate generation and distribution network or a network of converter substations, adding the expense, also low-frequency transformers, used both at the substations and on the rolling stock, are particularly bulky and heavy. The DC system, apart from being limited as to
12276-694: The three-phase induction motor fed by a variable frequency drive , a special inverter that varies both frequency and voltage to control motor speed. These drives can run equally well on DC or AC of any frequency, and many modern electric locomotives are designed to handle different supply voltages and frequencies to simplify cross-border operation. Five European countries – Germany, Austria, Switzerland, Norway and Sweden – have standardized on 15 kV 16 + 2 ⁄ 3 Hz (the 50 Hz mains frequency divided by three) single-phase AC. On 16 October 1995, Germany, Austria and Switzerland changed from 16 + 2 ⁄ 3 Hz to 16.7 Hz which
12400-575: The through traffic to non-electrified lines. If through traffic is to have any benefit, time-consuming engine switches must occur to make such connections or expensive dual mode engines must be used. This is mostly an issue for long-distance trips, but many lines come to be dominated by through traffic from long-haul freight trains (usually running coal, ore, or containers to or from ports). In theory, these trains could enjoy dramatic savings through electrification, but it can be too costly to extend electrification to isolated areas, and unless an entire network
12524-599: The town was launched. After World War I and the Silesian Uprisings, in 1922 the region (and the tram network) was divided between newly independent Poland and Germany, and international services appeared (the last one ran until 1937). In 1928 further standard gauge systems were established in Sosnowiec, Będzin and Dąbrowa Górnicza (the so-called Dabrowa Coal Basin - a region adjoining the Upper Silesian Coal Basin). Between 1928 and 1936 most of
12648-732: The track or from structure or tunnel ceilings, or a third rail mounted at track level and contacted by a sliding " pickup shoe ". Both overhead wire and third-rail systems usually use the running rails as the return conductor, but some systems use a separate fourth rail for this purpose. In comparison to the principal alternative, the diesel engine , electric railways offer substantially better energy efficiency , lower emissions , and lower operating costs. Electric locomotives are also usually quieter, more powerful, and more responsive and reliable than diesel. They have no local emissions, an important advantage in tunnels and urban areas. Some electric traction systems provide regenerative braking that turns
12772-466: The train stops with one collector in a dead gap, another multiple unit can push or pull the disconnected unit until it can again draw power. The same applies to the kind of push-pull trains which have a locomotive at each end. Power gaps can be overcome in single-collector trains by on-board batteries or motor-flywheel-generator systems. In 2014, progress is being made in the use of large capacitors to power electric vehicles between stations, and so avoid
12896-713: The train's kinetic energy back into electricity and returns it to the supply system to be used by other trains or the general utility grid. While diesel locomotives burn petroleum products, electricity can be generated from diverse sources, including renewable energy . Historically, concerns of resource independence have played a role in the decision to electrify railway lines. The landlocked Swiss confederation which almost completely lacks oil or coal deposits but has plentiful hydropower electrified its network in part in reaction to supply issues during both World Wars. Disadvantages of electric traction include: high capital costs that may be uneconomic on lightly trafficked routes,
13020-461: The trains retain a red livery based on the Pacific Electric's 'Red Cars', true to the company's interurban roots. The Keiō Line did not fully remove the street running section on the Kōshū Kaidō outside of Shinjuku Station until the 1960s, replacing it with an underground section. Similar to passenger railway conditions in early 1900s America, intense competition still exists today between private railways and mainline railways operated by
13144-413: The transmission and conversion of electric energy involve losses: ohmic losses in wires and power electronics, magnetic field losses in transformers and smoothing reactors (inductors). Power conversion for a DC system takes place mainly in a railway substation where large, heavy, and more efficient hardware can be used as compared to an AC system where conversion takes place aboard the locomotive where space
13268-470: The tyres do not conduct the return current, the two guide bars provided outside the running ' roll ways ' become, in a sense, a third and fourth rail which each provide 750 V DC , so at least electrically it is a four-rail system. Each wheel set of a powered bogie carries one traction motor . A side sliding (side running) contact shoe picks up the current from the vertical face of each guide bar. The return of each traction motor, as well as each wagon ,
13392-407: The upper level of Tennōji Station ). Today, trackage of the major sixteen private railways , in many places originally designed as American-style interurban railways, has been upgraded beyond recognition into high capacity urban heavy railways. Private railway companies that started out as interurbans such as Tokyu , Seibu , Odakyu , Hankyu and Tobu ; rail transportation now tends to form only
13516-478: The urban areas of the Upper Silesia . It is one of the largest interurban networks in Europe. In Łódź region, an interurban tram system connects Łódź, Pabianice, Zgierz and Konstantynów Łódzki, and formerly also Ozorków, Lutomiersk, Aleksandrów Łódzki, Rzgów and Tuszyn. Only three continuously operating passenger interurbans in the US remain with most being abandoned by the 1950s. The South Shore Line
13640-605: The village of Summit, outside Rochdale , a distance of 52 miles (84 km), and with a short 7 miles (11 km) bus journey across the Pennines, to connect to another tram network that linked Huddersfield, Halifax and Leeds. The first interurban railway in Japan is the Hanshin Electric Railway , built to compete with mainline steam trains on the Osaka to Kobe corridor and completed in 1905. As laws of that time did not allow parallel railways to be built,
13764-432: The voltage, the lower the current for the same power (because power is current multiplied by voltage), and power loss is proportional to the current squared. The lower current reduces line loss, thus allowing higher power to be delivered. As alternating current is used with high voltages. Inside the locomotive, a transformer steps the voltage down for use by the traction motors and auxiliary loads. An early advantage of AC
13888-537: The war ended in 1945, riders went back to their automobiles, and most of these lines were finally abandoned. Several systems struggled into the 1950s, including the Baltimore and Annapolis Railroad (passenger service ended 1950), Lehigh Valley Transit Company (1951), West Penn Railways (1952), and the Illinois Terminal Railroad (1958). The West Penn was the largest interurban to operate in
14012-628: The war years, or at least the remaining parts not yet demolished. One of the largest systems, nicknamed the Blue Tram , was run by the Noord-Zuid-Hollandsche Stoomtramweg-Maatschappij and survived until 1961. Another, the RTM ( Rotterdamse Tramweg Maatschappij ), which ran in the river delta south-west of Rotterdam , survived until early January 1966. Its demise sparked the rail-related heritage movement in
14136-405: The weight of an on-board transformer. Increasing availability of high-voltage semiconductors may allow the use of higher and more efficient DC voltages that heretofore have only been practical with AC. The use of medium-voltage DC electrification (MVDC) would solve some of the issues associated with standard-frequency AC electrification systems, especially possible supply grid load imbalance and
14260-532: The world, and the list of railway electrification systems covers both standard voltage and non-standard voltage systems. The permissible range of voltages allowed for the standardised voltages is as stated in standards BS EN 50163 and IEC 60850. These take into account the number of trains drawing current and their distance from the substation. 1,500 V DC is used in Japan, Indonesia, Hong Kong (parts), Ireland, Australia (parts), France (also using 25 kV 50 Hz AC ) ,
14384-534: The world, including China , India , Japan , France , Germany , and the United Kingdom . Electrification is seen as a more sustainable and environmentally friendly alternative to diesel or steam power and is an important part of many countries' transportation infrastructure. Electrification systems are classified by three main parameters: Selection of an electrification system is based on economics of energy supply, maintenance, and capital cost compared to
14508-576: The world. These can be regarded as interurbans since they run on the streets, like trams, when in cities, while out of them they either share existing railway lines or use lines that were abandoned by the railway companies. The term "interurban" was coined by Charles L. Henry , a state senator in Indiana. The Latin, inter urbes , means "between cities". The interurban fit on a continuum between urban street railways and full-fledged railroads. George W. Hilton and John F. Due identified four characteristics of an interurban: The definition of "interurban"
14632-461: Was chosen to start electrification on Katowice Rynek (Kattowitz, Ring) - Zawodzie line, after which Schikora & Wolff completed electrification of four additional lines. In 1912, the first short 4 ft 8 + 1 ⁄ 2 in ( 1,435 mm ) standard gauge line was built in Katowice . In 1913, a separate standard gauge system connecting Bytom with suburbs and villages west of
14756-487: Was common. Receivership was a common fate when the interurban company could not pay its payroll and other debts, so state courts took over and allowed continued operation while suspending the company's obligation to pay interest on its bonds. In addition, the interurban honeymoon period with the municipalities of 1895–1910 was over. The large and heavy interurbans, some weighing as much as 65 tons, caused damage to city streets which led to endless disputes over who should bear
14880-437: Was exacerbated because the return current also had a tendency to flow through nearby iron pipes forming the water and gas mains. Some of these, particularly Victorian mains that predated London's underground railways, were not constructed to carry currents and had no adequate electrical bonding between pipe segments. The four-rail system solves the problem. Although the supply has an artificially created earth point, this connection
15004-553: Was first applied successfully by Frank Sprague in Richmond, Virginia in 1887-1888, and led to the electrification of hundreds of additional street railway systems by the early 1890s. The first electrification of a mainline railway was the Baltimore and Ohio Railroad's Baltimore Belt Line in the United States in 1895–96. The early electrification of railways used direct current (DC) power systems, which were limited in terms of
15128-425: Was often local with salesmen going door to door aggressively pushing this new and exciting "it can't fail" form of transportation. But many of those interurbans did fail, and often quickly. They had poor cash flow from the outset and struggled to raise essential further capital. Interurbans were very vulnerable to acts of nature damaging track and bridges, particularly in the Midwestern United States where flooding
15252-648: Was progressively closed in the 1970s but parts of it were reused as the outer parts of the Milan Metro . Development of Japanese interurbans strayed from their American counterparts from the 1920s. The second boom of interurbans occurred as late as the 1920s and 1930s in Japan, with predecessors of the extensive Kintetsu Railway , Hankyu , Nankai Electric Railway and Odakyu Electric Railway networks starting life during this period. These interurbans, built with straighter tracks, electrified at 1500V and operated using larger cars, were built to even higher standards than
15376-621: Was the first stretch of underground railway in all of Asia, predating the Tokyo Metro Ginza Line by two years. Meanwhile, existing interurbans like the Hanshin Electric Railway started to rebuild their street-running lines into grade-separated exclusive rights-of-way. After the war, interurbans and other private railway companies received large investments and were allowed to compete not only with mainline trains but also with each other, in order to rejuvenate
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