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67-659: The design was based on the prototype U1 tram built in 1965 for the Frankfurt U-Bahn . The U2 was also designed for and used by the Frankfurt U-Bahn. The name is derived from the class identifier given to the cars in the Frankfurt. The U2 was later exported to North America and adapted for use on light rail systems in Edmonton , Calgary , and San Diego , during a period in which few purpose-built LRVs were being manufactured. In

134-537: A DC circuit. However, most such circuits have a DC solution. This solution gives the circuit voltages and currents when the circuit is in DC steady state . Such a circuit is represented by a system of differential equations . The solution to these equations usually contain a time varying or transient part as well as constant or steady state part. It is this steady state part that is the DC solution. There are some circuits that do not have

201-407: A DC solution. Two simple examples are a constant current source connected to a capacitor and a constant voltage source connected to an inductor. In electronics, it is common to refer to a circuit that is powered by a DC voltage source such as a battery or the output of a DC power supply as a DC circuit even though what is meant is that the circuit is DC powered. In a DC circuit, a power source (e.g.

268-450: A battery system to ensure power is maintained for subscriber lines during power interruptions. Other devices may be powered from the telecommunications DC system using a DC-DC converter to provide any convenient voltage. Many telephones connect to a twisted pair of wires, and use a bias tee to internally separate the AC component of the voltage between the two wires (the audio signal) from

335-423: A battery, capacitor, etc.) has a positive and negative terminal, and likewise, the load also has a positive and negative terminal. To complete the circuit, positive charges need to flow from the power source to the load. The charges will then return to the negative terminal of the load, which will then flow back to the negative terminal of the battery, completing the circuit. If either the positive or negative terminal

402-524: A direct current source . The DC solution of an electric circuit is the solution where all voltages and currents are constant. Any stationary voltage or current waveform can be decomposed into a sum of a DC component and a zero-mean time-varying component; the DC component is defined to be the expected value, or the average value of the voltage or current over all time. Although DC stands for "direct current", DC often refers to "constant polarity". Under this definition, DC voltages can vary in time, as seen in

469-660: A folding step previously used. The new car was debuted at the International Transport Exhibition in Munich in 1965 and two vehicles arrived in Frankfurt in May 1966. There was no further production of the U1, and they were only used in regular service for a few years before being retired in 1976 because of their incompatibility with the rest of the fleet. With the experience learned from the two prototypes, several changes were made for

536-548: A maximum speed of 80 km/h (50 mph), or with four AC motors for an output of 544  kW (730  hp ) and speed of 88 km/h (55 mph). As the length of a tram or light-rail train running on shared track is restricted to a maximum of 105 meters (344 ft) in Germany , up to four U2 cars may be used in a single consist on such track. Frankfurt U2 cars use Scheren (diamond) or single-arm (z-shaped) pantographs , while Calgary, Edmonton and San Diego vehicles use

603-516: A regular budget of 733 million DM. Under pressure to stabilize the budget deficit, the 1964–65 municipal assembly reduced long-term investment planning from 2.7 billion DM to 1.7 billion DM and even hinted that for some time that Eschersheimer Landstraße would be "impassable desert" after completion of the tunnelling work. The U-Bahn opened on 4 October 1968, with the first route running from Hauptwache to Nordweststadt (now line U1). This first section ended up costing 344 million DM to construct, of which

670-847: A similar retirement system as they have begun to introduce the Siemens S200 as both a replacement and expansion of the fleet. The city has begun to explore additional disposition options. The U2s in Calgary had been retired in 2016 but there are still 40 in service out of 83 DCs and 2 ACs. Edmonton Transit Service has announced that its 37 U2s will be replaced by 2030, as they intend to procure new LRV's between 2023-2024. They have also stated that they are looking into preserving at least one vehicle for their historical fleet . The U2's dimensions are 24.284 m (79 ft 8 + 1 ⁄ 8  in) by 2.650 m (8 ft 8 + 3 ⁄ 8  in) by 3.66 m (12 ft 1 ⁄ 8  in). In

737-669: A unified standard height of 80 cm (31 in), modifications were required to the fleet: U2h retained a small step to serve 56 and 80 cm (22 and 31 in) platforms on lines U1 to U3, while U2e lost the step entirely to serve 87 cm (34 in) and later 80 cm (31 in) platforms on lines U4, U6 and U7. San Diego MTS retired their last U2 vehicles in January 2015, coinciding with low floor S70 cars being deployed on its Blue Line, six examples are preserved by various museums and nonprofits. MTS has retained Car 1001 as part of its heritage fleet of light rail vehicles. The car

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804-522: Is also equipped with a dashboard in order to facilitate shunting, as well as sliding doors (for closing up the train during shunting movements), and head/tail lights. A total of 100 P/Pt/Ptb Class vehicles were built by Duewag in three batches from 1972-1978 and used until 2016 on the U-Bahn network. While the first batch of 30 vehicles were fitted with folding steps, to facilitate access from street level in tram service or high platforms at U-Bahn stations,

871-482: Is an AC device which uses a rectifier to produce DC for battery charging. Most highway passenger vehicles use nominally 12  V systems. Many heavy trucks, farm equipment, or earth moving equipment with Diesel engines use 24 volt systems. In some older vehicles, 6 V was used, such as in the original classic Volkswagen Beetle . At one point a 42 V electrical system was considered for automobiles, but this found little use. To save weight and wire, often

938-548: Is an upgraded version of the U2 that shares similar characteristics of the newer SD-100s and SD-160s , yet it still uses the mechanical equipment of the U2. Siemens also developed a U2 running on alternating current motors using inverters (nicknamed the U2-AC). 2 units were purchased by the Government of Alberta in 1988 and operated as demo units for Edmonton and Calgary. Calgary ended up adding

1005-435: Is commonly found in many extra-low voltage applications and some low-voltage applications, especially where these are powered by batteries or solar power systems (since both can produce only DC). Most electronic circuits or devices require a DC power supply . Domestic DC installations usually have different types of sockets , connectors , switches , and fixtures from those suitable for alternating current. This

1072-558: Is developed from the U3 class, but with an appearance similar to the R type trams. Siemens-Duewag built 39 vehicles between 1994 and 1998, numbered 501–539. They were the first U-Bahn vehicles delivered in the current subaru vista blue livery. Originally the U4 vehicles were deployed on A Line services U1, U2 and U3, and later also on lines U8 and U9. An accident involving the two cars 517 and 532 on 28 February 2007 resulted in their early retirement from

1139-427: Is disconnected, the circuit will not be complete and the charges will not flow. In some DC circuit applications, polarity does not matter, which means you can connect positive and negative backwards and the circuit will still be complete and the load will still function normally. However, in most DC applications, polarity does matter, and connecting the circuit backwards will result in the load not working properly. DC

1206-412: Is distributed to a substation, which utilizes a rectifier to convert the power to direct current. The term DC is used to refer to power systems that use only one electrical polarity of voltage or current, and to refer to the constant, zero-frequency, or slowly varying local mean value of a voltage or current. For example, the voltage across a DC voltage source is constant as is the current through

1273-447: Is mostly due to the lower voltages used, resulting in higher currents to produce the same amount of power . It is usually important with a DC appliance to observe polarity, unless the device has a diode bridge to correct for this. Most automotive applications use DC. An automotive battery provides power for engine starting, lighting, the ignition system, the climate controls, and the infotainment system among others. The alternator

1340-588: Is now in the collection of the Frankfurt Transport Museum. The U2 Class were the first production vehicles for the network. Duewag built 104 vehicles of this type in seven batches from 1968 to 1984. The final (seventh) batch of seven units was delivered after a fire at Heddernheim Depot in 1980 destroyed five sets. They were originally painted in a red and white livery, before being repainted in beige, ivory and grey from 1981 and finally from 1996 turquoise (officially known as subaru vista blue ). Unlike

1407-435: Is one-directional flow of electric charge . An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors , insulators , or even through a vacuum as in electron or ion beams . The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current

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1474-422: Is still only partially completed. Central sections of the routes, shared by multiple services, are called "basic route" or "trunk route"; these branch out into several "connecting lines", which are usually used by only one service and are sometimes referred to as "upgraded lines". The terms "basic section" and "connecting section" and their designations are based on the names of the construction sections. Sections of

1541-482: Is the municipal transport company traffiQ. The U-Bahn opened in 1968, and has been expanded several times. It consists of three inner-city tunnels and above-ground lines in the suburbs. About 59% of the track length is underground. The network operates on a variety of right of ways typical of a light rail system, with core sections running underground in the inner city and some above-ground sections operating on street . Like all public transport lines in Frankfurt,

1608-667: The Orange Line received low-floor cars. The remainder were used on its initial operating segment until January 2015. In 2016, two cars were shipped to Texas for use at a dog training facility, The majority of the U2's had left the property by 2018, having been either scrapped or donated to museums, with car 1001 being retained. After 48 years of service, the last Frankfurt examples were retired in April 2016. The Frankfurt cars have been replaced by Bombardier Flexity Swifts , there are three cars left for museum purposes. Calgary Transit has begun

1675-470: The SPD faction requested that the city council might commit to a two-line straddle-beam monorail system designed by Alweg . Lord Mayor Werner Bockelmann , however, advocated from the outset the construction of a U-Bahn, which was however considered the most expensive option. On 7 July 1960, the city council therefore commissioned a city planner with the preparation of a general planning overview in order to compare

1742-485: The "boldly begun subway construction" in 1964 in its dimensions with the medieval cathedral building. After just one year, the ambitious mammoth project threatened to fail due to financing problems. Falling tax revenues and a tax policy geared towards federal and state governments drove the municipalities close to ruin in the mid-1960s. Frankfurt was 1.4 billion DM in debt in 1964, the most heavily indebted city in Germany, with

1809-456: The A Line and U5 vehicles are now deployed on all lines. The design of the U5 class is similar to the older trains. They are 25   m long, two-section, six-axle vehicles, but there are three subtypes. The U5-ZR ( Zweirichtungswagen , bi-directional vehicle) have driving cabs at each end. The U5-ER ( Einrichtungswagen , uni-directional vehicle) have a driving cab at one end and an open gangway at

1876-448: The DC component of the voltage between the two wires (used to power the phone). High-voltage direct current (HVDC) electric power transmission systems use DC for the bulk transmission of electrical power, in contrast with the more common alternating current systems. For long-distance transmission, HVDC systems may be less expensive and suffer lower electrical losses. Applications using fuel cells (mixing hydrogen and oxygen together with

1943-518: The Frankfurt system have also been preserved following retirement in 2016. Other Siemens light rail vehicles for the American market: Frankfurt U-Bahn The Frankfurt U-Bahn is a Stadtbahn ( premetro ) system serving Frankfurt , Germany. Together with the Rhine-Main S-Bahn and the tram network , it forms the backbone of the public transport system in Frankfurt. Its name derives from

2010-536: The German term for underground railway , U ntergrund bahn . Since 1996, the U-Bahn has been owned and operated by Stadtwerke Verkehrsgesellschaft Frankfurt am Main  [ de ] (VGF), the public transport company of Frankfurt, and is part of the Rhein-Main-Verkehrsverbund (RMV) transport association. The licence contract is up to 31 December 2031 and is renewable. The contracting authority of VGF

2077-503: The U7 was extended to Enkheim. In order to accommodate the narrower body of the Pt, the U-Bahn platforms had to be modified and in order to allow mixed operation at the same platforms as the other light rail vehicles, which were 30   cm wider, some Pt vehicles were widened around the door area. The resulting subclass was then named Ptb (b for breit , wide). The aforementioned modifications to

Siemens–Duewag U2 - Misplaced Pages Continue

2144-479: The US and Canada, usually up to five U2 cars are coupled to run as a train. Calgary Transit regularly couples up six U2 cars to shuttle them from Anderson Garage to Haysboro storage. These unique shuttle trains can be commonly seen after the evening rush hour. Each articulated car has a total passenger capacity of 264 passengers. It may be equipped with two DC motors for a total power output of 300  kW (400  hp ) and

2211-416: The above-ground section between Römerstadt and Ginnheim are completely separate from other traffic. Most of the other above-ground sections run on reserved track but have numerous level crossings for road traffic and pedestrians. The section of the U5 between Friedberger Anlage and Marbachweg operates in the largely on street . Tunnels exist at - These are individual routings. As of 2024 extensions of

2278-416: The beginning of the 1950s, the first plans were made to relieve the then already overburdened tram. More than 100,000 motor vehicles were registered in Frankfurt in 1958, and more than 180,000 commuters used the transport infrastructure on a daily basis. Various alternatives to the construction of a modern high-speed traffic system and the separation of above-ground traffic flows were discussed. On 5 April 1960,

2345-474: The charging of batteries to large power supplies for electronic systems, motors, and more. Very large quantities of electrical energy provided via direct-current are used in smelting of aluminum and other electrochemical processes. It is also used for some railways , especially in urban areas . High-voltage direct current is used to transmit large amounts of power from remote generation sites or to interconnect alternating current power grids. Direct current

2412-407: The circuit voltages and currents are independent of time. A particular circuit voltage or current does not depend on the past value of any circuit voltage or current. This implies that the system of equations that represent a DC circuit do not involve integrals or derivatives with respect to time. If a capacitor or inductor is added to a DC circuit, the resulting circuit is not, strictly speaking,

2479-532: The city center (line U9 being the exception). In 2023, the U-Bahn carried 123.6 million passengers, an average of approximately 338,600 passengers per day. The most recent expansion of the network was on 12 December 2010 when two new lines were added, the U8 and the U9 (both part of the long-planned but only partially completed fourth route ), which opened up the university campus area and the new development area at Riedberg . At

2546-528: The costs of the three systems: Alweg straddle-beam monorail, U-Bahn and Stadtbahn (premetro). Responsible for the planning was in October 1961 designated to the head of the Traffic Department Walter Möller . The decision was finally made in late 1961 in favour of a U-Bahn system, which was to be built in several sections initially using existing tram infrastructure. In the first construction phase,

2613-436: The early 1960s, Duewag developed and manufactured a prototype of a new tram for the Frankfurt U-Bahn . The design was largely based on the previously delivered trams, but added electronic controls that allowed several railcars to be coupled together to form trains, and a floor height of 93 cm (37 in) that made it possible to board from platforms with a height of 32 to 56 cm (13 to 22 in) without having to add

2680-417: The federal government contributed 56 million DM and the state of Hesse contributed 129 million DM. The route network consists of the four routes "A", "B", "C" and "D" used by a total of nine different services, U1 to U9. The total operating length of is 64.85 kilometres (40.30 mi). The first three routes ("A", "B" and "C") each have a separate tunnelled section under the city centre. The fourth, D, route

2747-410: The fleet and being scrapped for spare parts. Between 2010 and 2017 all remaining U4 cars were refurbished. They were fitted with new yellow handrails and orange entrance areas to help visually impaired passengers orientate themselves in the train, and an air conditioning system for the driver's cab. The trains were also modified so they could run in multiple with the newer U5 Class. The U5 Class,

Siemens–Duewag U2 - Misplaced Pages Continue

2814-641: The latter style pantograph exclusively. In order to operate safely, the cars require 500 kW (670 hp) to accelerate from a station, and 150 kW (200 hp) to maintain speed. Siemens-Duewag Type U3 is an upgraded version of the U2 with a slightly longer length and cosmetic changes. Introduced in 1977, they entered service in 1980 and will be exported to Monterrey in Mexico, after being retired from service by Germany's Frankfurt U-Bahn . Three examples will be preserved for museum service Siemens-Duewag Type U2a on Sacramento Regional Transit's light rail system

2881-448: The legs were designated by the letter of the route and a Roman numerical suffix - sections of the connecting lines with an Arabic numeral. The designation of the connecting lines "A1", "A2", "A3" and "B1" was also used to designate the lines until 1978. Like all light rail vehicles, trams and subways in Germany, the Frankfurt U-Bahn is subject to the BOStrab tram regulations . The tunnels and

2948-567: The loops of wire each half turn, it caused the flow of electricity to reverse, generating an alternating current . At Ampère's suggestion, Pixii later added a commutator , a type of "switch" where contacts on the shaft work with "brush" contacts to produce direct current. The late 1870s and early 1880s saw electricity starting to be generated at power stations . These were initially set up to power arc lighting (a popular type of street lighting) running on very high voltage (usually higher than 3,000 volts) direct current or alternating current. This

3015-611: The mechanical and electrical systems, the addition of new LED interior and exterior destination signs, additional speakers to improve sound volume, and retrofits for CBTC operation for the Metro Line. Refurbishment was done by Bombardier Transportation in Buffalo, New York . In 2010, the San Diego Metropolitan Transit System sold 35 cars to Mendoza, Argentina, followed by the bulk of its U2 fleet retiring in 2013, when

3082-512: The metal frame of the vehicle is connected to one pole of the battery and used as the return conductor in a circuit. Often the negative pole is the chassis "ground" connection, but positive ground may be used in some wheeled or marine vehicles. In a battery electric vehicle , there are usually two separate DC systems. The "low voltage" DC system typically operates at 12V, and serves the same purpose as in an internal combustion engine vehicle. The "high voltage" system operates at 300-400V (depending on

3149-485: The newest of the U-Bahn fleet, has been produced by Bombardier Transportation (now Alstom ) in Bautzen , and is part of the manufacturer's Flexity Swift range. The first order of 146 vehicles was placed in 2006, another order for 78 vehicles came in 2011. and 22 further vehicles were ordered in 2018, with a 23rd vehicle to be delivered to compensate for delivery delays. The first vehicles were delivered in 2008, for use on

3216-581: The other. Two of these can be connected to form a 50   m long train, called U5-50, in a concept similar to the TW2500 on the Hanover Stadtbahn . The third type are designated U5-MW , ( Mittelwagen , intermediate vehicle). They have no cab and both ends of the unit are outfitted with gangways. One or two of these can be coupled between two U5-ER sets to form a continually walk-through train of either 75 metres (U5-75) or 100 metres (U5-100). Each cabless end

3283-543: The platforms were reversed as well. Even after no other lines required the folding steps, the Ptb remained indispensable on the U5 service where on certain sections the stations did not have high platforms until 2016. Some Ptb class cars had their widened steps restored to regular width and were repurposed for a time on tram lines 15, 17 and 20 due to a tram stock shortage. [REDACTED] Direct current Direct current ( DC )

3350-470: The production series of cars. The vehicles were built by consortium of Siemens , Duewag and Wegmann & Co . Duewag was the primary developer and manufacturer, Siemens provided the electrical equipment, and Wegmann did some assembly under contract. The U2 vehicle was originally developed for the light rail system in Frankfurt . Its design was later used for systems in Edmonton and Calgary . The model

3417-476: The prototype vehicles the U2 Class did not have folding steps. Instead there were fixed steps inside the doors, level with the underground station platforms but a step up from the lower platforms at above-ground stations. The U2 cars were all used on the A Line until 1998 when 32 vehicles were transferred to the C Line . This had slightly higher platforms (87   cm) and these vehicles were rebuilt as U2e with

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3484-428: The raw output of a rectifier or the fluctuating voice signal on a telephone line. Some forms of DC (such as that produced by a voltage regulator ) have almost no variations in voltage , but may still have variations in output power and current. A direct current circuit is an electrical circuit that consists of any combination of constant voltage sources, constant current sources, and resistors . In this case,

3551-430: The second and third batches had fixed steps and thus was initially incompatible with the platforms on the U-Bahn lines. To differentiate the two subclasses, the batch with folding steps was designated Pt (t for tunnelgängig , operable in tunnels). Between 1984 and 1986 the third batch was rebuilt with folding steps in order to be operated on the C Line , and the second batch were also rebuilt as Pt Class in 1992 when

3618-492: The steps in the door areas removed. The vehicles remaining on the A Line were also rebuilt from 1999, with the steps raised but not removed, becoming U2h . The last U2 car was withdrawn after a farewell trip on 3 April 2016. Three examples have been preserved. Siemens adapted the U2 design for the North American light rail market and similar vehicles were supplied to Edmonton , Calgary and San Diego . The U3 Class

3685-642: The system has been integrated in the Rhein-Main Verkehrsverbund (RMV) since 1995. From 1974 until the founding of the RMV, the Stadtwerke were shareholders in the predecessor group, the Frankfurter Verkehrsverbund (FVV; Frankfurt Transport Association). The network consists of 84 stations on nine lines, with a total length of 64.85 kilometres (40.30 mi). Eight of the nine lines travel through

3752-608: The system in planning or under construction include: There are two depots for U-Bahn trains: The U1 Class consists of two six-axle, two-section prototype vehicles built by Duewag in 1965, derived from the manufacturer's previous tramcars. The original designation was U6 ( U -Bahn vehicle with 6 axles), but this was changed to U1 when the U2 Class were delivered. The first prototype was delivered in cream livery but both were painted red and white from 1968. The U1 Class were removed from service in 1976 because they were incompatible with newer vehicle types. One non-operational U1 Class

3819-423: The tunnels of the inner city were to be built for the time being, which were to be connected via provisional ramps to the adjacent tram routes. It was not until the second construction phase that the tunnels were to be extended beyond the inner city and connected to suitable upgraded above-ground routes in the suburbs. In the third construction phase, the change from Stadtbahn to U-Bahn would have been completed, which

3886-521: The two units to their main fleet until 2015, when both were retired due to part issues. One of the units is still active as a track inspection vehicle, while the other was scrapped for spare parts. Two variants, designated U2h and U2e, were locally created during the early 2000s in Frankfurt to serve different platform heights on the network. Originally the trains were designed to serve platforms of 32 and 56 cm (13 and 22 in) height, with one large step at each door. As platforms were rebuilt to create

3953-464: The vehicle), and provides the power for the traction motors . Increasing the voltage for the traction motors reduces the current flowing through them, increasing efficiency. Telephone exchange communication equipment uses standard −48 V DC power supply. The negative polarity is achieved by grounding the positive terminal of power supply system and the battery bank. This is done to prevent electrolysis depositions. Telephone installations have

4020-515: Was galvanic current . The abbreviations AC and DC are often used to mean simply alternating and direct , as when they modify current or voltage . Direct current may be converted from an alternating current supply by use of a rectifier , which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter . Direct current has many uses, from

4087-566: Was based on the U2, but slightly longer (24.49   m), with a body made entirely of steel, and without any steps for access from low platforms. Duewag built 27 vehicles in 1979 and 1980, which were originally deployed on the U4 and transferred to the U6 in 2015. In 2017 the last type U3 train was retired from service. After their withdrawal in Frankfurt 24 trains were refurbished and transferred to Monterrey Metro in Mexico. The other three have remained in Frankfurt as museum vehicles. The U4 class

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4154-762: Was chosen for operations in San Diego in 1979, however, the planned platform level was lower than their counterpart system, so a street-level version was developed, and 71 vehicles were eventually delivered in stages. San Diego Metropolitan Transit System exported 11 cars to the Metrotranvia Mendoza system in Argentina in early 2010. These cars entered service in 2012 with a further 24 for expansion and parts donors following later that year. Edmonton Transit Service refurbished all 37 of its U2s to extend their operational life by another 10 years. Upgrades included overhauls to

4221-406: Was followed by the widespread use of low voltage direct current for indoor electric lighting in business and homes after inventor Thomas Edison launched his incandescent bulb based electric " utility " in 1882. Because of the significant advantages of alternating current over direct current in using transformers to raise and lower voltages to allow much longer transmission distances, direct current

4288-407: Was produced in 1800 by Italian physicist Alessandro Volta 's battery, his Voltaic pile . The nature of how current flowed was not yet understood. French physicist André-Marie Ampère conjectured that current travelled in one direction from positive to negative. When French instrument maker Hippolyte Pixii built the first dynamo electric generator in 1832, he found that as the magnet used passed

4355-477: Was replaced over the next few decades by alternating current in power delivery. In the mid-1950s, high-voltage direct current transmission was developed, and is now an option instead of long-distance high voltage alternating current systems. For long distance undersea cables (e.g. between countries, such as NorNed ), this DC option is the only technically feasible option. For applications requiring direct current, such as third rail power systems, alternating current

4422-498: Was to operate completely independently of traffic in tunnels, cuts and dams. On 28 June 1963 the first pile of rubble for the construction of the 3.2-kilometre (2.0 mi)-long tunnel under the Eschersheimer Landstraße. For the first stage of development until 1975 - approximately corresponding to today's main lines A and B - construction costs of 565 million DM were expected. The new Lord Mayor Willi Brundert compared

4489-462: Was unveiled as part of a celebration at 12th & Imperial on July 11, 2019, and re-entered service two days later. The car operates on the Silver Line, alongside San Diego PCC cars 529 and 530. The City of Edmonton has stated that at least one U2 will be preserved and operational for their historical fleet. The City of Calgary is currently looking into putting one on static display. Cars 303-305 of

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