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81-560: Drammen ( Norwegian pronunciation: [ˈdrɑ̀mːən] ) is a city and municipality in Buskerud county, Norway . The port and river city of Drammen is centrally located in the south-eastern and most populated part of Norway. Drammen municipality also includes smaller towns and villages such as Konnerud , Svelvik , Mjøndalen and Skoger . Drammen is located west of the Oslofjord inlet, situated approximately 44 km (27 mi) southwest of

162-480: A Dennis Dragon (#701) into a double-decker trolleybus, and it was tested on a 300-metre track in Wong Chuk Hang in that year. Hong Kong decided not to build a trolleybus system, and the testing of this prototype did not lead to any further production of vehicles. There are currently 300 cities or metropolitan areas where trolleybuses are operated, and more than 500 additional trolleybus systems have existed in

243-453: A "straight through" or "turnout" position; it normally remains in the "straight through" position unless it has been triggered, and reverts to it after a few seconds or after the pole shoe passes through and strikes a release lever (in Boston, the resting or "default" position is the "leftmost" position). Triggering is typically accomplished by a pair of contacts, one on each wire close to and before

324-661: A 31-line system operated with a fleet of over 1,250 trolleybuses. Trolleybuses have been long encouraged in North Korea with the newest city to have a network being Manpo in December 2019. Since the year 2022, the city of Prague is constructing a new trolleybus system. Meanwhile, in 2023, plans for a trolleybus line in Berlin were scrapped in favour of a solution with battery-powered vehicles. Modern design vehicles Note: As there are numerous variations of tram and light-rail technology,

405-687: A choice later also made by Lucerne . Outside Europe, 14 vehicles built by, and for, the Shanghai trolleybus system in mid-1999 were the first reported low-floor trolleybuses in Southeast Asia. Wellington, New Zealand , took delivery of its first low-floor trolleybus in March 2003, and by the end of 2009 had renewed its entire fleet with such vehicles. Unlike Europe, where low floor means "100%" low floor from front to back, most "low floor" buses on other continents are actually only low-entry or part-low floor. In

486-547: A few years old and replace them with low-floor trolleybuses. Responses varied, with some systems keeping their high-floor fleets, and others retiring them early but, in many instances, selling them second-hand for continued use in countries where there was a demand for low-cost second-hand trolleybuses, in particular in Romania and Bulgaria. The Lausanne system dealt with this dilemma in the 1990s by purchasing new low-floor passenger trailers to be towed by its high-floor trolleybuses,

567-408: A population of 110.236 inhabitants in 2021. The city is the country's record champion in environment and urban development, 21 prices since 2003 with 16 national and 5 international. After the merger of the municipalities Drammen, Nedre Eiker and Svelvik in 2020, the municipality was then divided into ten municipal regions: Rock carvings at Åskollen and Austad are 6000 to 7000 years old, and are

648-457: A silver-colored key and sword against a blue background. It is based upon the old seal dating from 1723 for Bragernes , one of the central parts of Drammen. The motto for Bragernes (in Latin ) was In Fide Et Justitia Fortitudo (English: in faith and justice is strength ), and the items in the seal are referring to this: key = faith, sword = justice, column on rocks = strength. On January 1, 2020,

729-525: A single city on 19 June 1811. Its geographical location made the city favorable for seafaring, shipbuilding , log driving , timber trade. During the 19th century, paper and pulp industries were developed. Large parts of the city were ruined in the great fire of 12–13 July 1866, which led to the reconstruction of the city centre, including the characteristic town square and Bragernes church. The Drammen Line ( Drammenbanen ) opened in 1872 providing rail service between Drammen and Oslo. In 1909, Drammen got

810-453: A switch while braking or accelerating through a switch without activating it. One variation of the toggle switch will simulate accelerating by causing a larger power draw (through a resistance grid), but will not simulate coasting and prevent activation of the switch by cutting the power. A Selectric switch has a similar design, but the contacts on the wires are skewed, often at a 45-degree angle, rather than being lined up. This skew means that

891-401: A transmitter, often attached to a trolley pole. The receiver is attached to the switch and causes it to trigger if the correct code is received. This has the advantage that the driver does not need to be accelerating the bus (as with a power-on/power-off switch) or trying to make a sharp turn (as with a Selectric switch). Trailing switches (where two sets of wires merge) do not require action by

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972-432: A trolleybus going straight through will not trigger the switch, but a trolleybus making a turn will have its poles match the contacts in a matching skew (with one pole shoe ahead of the other), which will trigger the switch regardless of power draw (accelerating versus coasting). For a Fahslabend switch, the trolleybus' turn indicator control (or a separate driver-controlled switch) causes a coded radio signal to be sent from

1053-697: A trolleybus to get around a route blockage or can reduce the amount (or complexity) of overhead wiring needed at operating garages (depots). This capability has become increasingly common in newer trolleybuses, particularly in China, North America and Europe, where the vast majority of new trolleybuses delivered since the 1990s are fitted with at least limited off-wire capability. These have gradually replaced older trolleybuses which lacked such capability. In Philadelphia , new trackless trolleys equipped with small hybrid diesel-electric power units for operating short distances off-wire were placed in service by SEPTA in 2008. This

1134-666: Is 13 October (1981–2010 average). The Drammen-Berskog weather station has been operating since 2004. An earlier weather station named Drammen-Marienlyst (3 m) operated from 1966 to 2003. As of 2022, Immigrants and Norwegian-born with immigrant parents in Drammen is 29 per cent, of which 25 per cent are Norwegian-born with immigrant parents. As of 2022, immigrants of non-Western origin and their children enumerated 20,507 and made up an estimated 22% of Drammen's population. Immigrants of Western origin and their children enumerated 9,333 and made up an estimated 9% of Drammen's population. Aass Brewery

1215-592: Is a public swimming and training facility located in Marienlyst, Drammen. It was one of the largest in Norway when it opened 1 September 2008. They have five indoor and four outdoor pools. Bragernes Torg is the largest town square in Norway and one of the longest in the Nordics. Drammen is twinned with: Buskerud The county was named after the old manor Buskerud ( Old Norse : Biskupsruð ) (Biskopsrøysa) located on

1296-608: Is derived from high tech industries located in Kongsberg. Other significant income comes from the cabin areas in northern Buskerud. Buskerud's coat of arms were adopted in April 1966. It features a blue bear whose colours are symbolic of the blue colour works . The silver background of Buskerud's coat of arms represents the silver industry in Kongsberg . Trolleybus A trolleybus (also known as trolley bus , trolley coach , trackless trolley , trackless tram  – in

1377-406: Is in motion under the overhead wires and then allows off-wire travel for significant distances, often in excess of 15 km. Such trolleybuses are called, among others, trolleybuses with In-Motion Charging, hybrid trolleybuses, battery trolleybuses and electric buses with dynamic charging. The main advantages of this technology over conventional battery electric buses are reduced cost and weight of

1458-518: Is installed some distance from the intersection to choose the wires over the left-turn lane, and another switch is mounted closer to or in the intersection to choose between straight through and a right turn (this would be the arrangement in countries such as the United States, where traffic directionality is right-handed; in left-handed traffic countries such as the United Kingdom and New Zealand,

1539-613: Is instead of the trolleys using a conventional diesel drive train or battery-only system for their off-wire movement. King County Metro in Seattle, Washington and the MBTA in Boston 's Silver Line have used dual-mode buses that run on electric power from overhead wires on a fixed right-of-way and on diesel power on city streets. Metro used special-order articulated Breda buses, introduced in 1990, and most were retired in 2005. A limited number of

1620-612: Is most commonly supplied as 600- volt direct current , but there are exceptions. Currently, around 300 trolleybus systems are in operation, in cities and towns in 43 countries. Altogether, more than 800 trolleybus systems have existed, but not more than about 400 concurrently. The trolleybus dates back to 29 April 1882, when Dr. Ernst Werner Siemens demonstrated his " Elektromote " in a Berlin suburb. This experiment continued until 13 June 1882, after which there were few developments in Europe, although separate experiments were conducted in

1701-687: Is now the standard trolleybus current collection system. In the early days there were many other methods of current collection. The Cédès-Stoll (Mercédès-Électrique-Stoll) system was first operated near Dresden between 1902 and 1904, and 18 systems followed. The Lloyd-Köhler or Bremen system was tried out in Bremen with 5 further installations, and the Cantono Frigerio system was used in Italy. Throughout this period, trackless freight systems and electric canal boats were also built. Leeds and Bradford became

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1782-497: Is operated electrically just as a tramcar without limitation of the range. It concept of trolleybus and ebus with Battery electric bus . IMC500 transfers energy from the infrastructure to the vehicle at a power of up to 500 kW. The e.g. 2 x 160 kW motors are supplied in parallel to the battery charging with e.g. 200 kW. With increasing diesel fuel costs and problems caused by particulate matter and NO x emissions in cities, trolleybuses can be an attractive alternative, either as

1863-825: Is the oldest operating system in the world. With a length of 86 km, route #52 of Crimean Trolleybus is the longest trolleybus line in the world. See also Trolleybus usage by country . Transit authorities in some cities have reduced or discontinued the use of trolleybuses in recent years, while others, wanting to add or expand use of zero-emission vehicles in an urban environment, have opened new systems or are planning new systems. For example, new systems opened in Lecce , Italy, in 2012; in Malatya , Turkey, in 2015; and in Marrakesh , Morocco, in 2017. Beijing and Shanghai have been expanding their respective systems, with Beijing expanding to

1944-432: Is the oldest surviving brewery in Norway, and has won acclaim for both its beer and its well-conserved building. Founded in 1834, the brewery's primary products are soft drinks, beer and aquavit. The Drammen Museum of Art and Cultural History includes Marienlyst, a manor house from ca. 1770, museum building from 1930 with the museum's administration, permanent exhibitions and collections, and Lyche pavilion from 1990 with

2025-753: The Boston system . Subsequently, the Vancouver system and the Philadelphia system have converted entirely to low-floor vehicles, and in 2013 the Seattle and Dayton systems both placed orders for their first low-floor trolleybuses. Outside São Paulo, almost all trolleybuses currently in service in Latin America are high-floor models built before 2000. However, in 2013, the first domestically manufactured low-floor trolleybuses were introduced in both Argentina and Mexico. With regard to non-passenger aspects of vehicle design,

2106-451: The La Spezia (Italy) system being the last one to do so, and several systems in other parts of the world have purchased low-floor vehicles. In the United States, some transit agencies had already begun to accommodate persons in wheelchairs by purchasing buses with wheelchair lifts , and early examples of fleets of lift-equipped trolleybuses included 109 AM General trolleybuses built for

2187-450: The Seattle trolleybus system in 1979 and the retrofitting of lifts in 1983 to 64 Flyer E800s in the Dayton system 's fleet. The Americans with Disabilities Act of 1990 required that all new transit vehicles placed into service after 1 July 1993 be accessible to such passengers. Trolleybuses in other countries also began to introduce better access for the disabled in the 1990s, when

2268-627: The Soviet Union . Generally trolleybuses occupy a position in usage between street railways (trams) and motorbuses. Worldwide, around 300 cities or metropolitan areas on 5 continents are served by trolleybuses (further detail under Use and preservation , below). This mode of transport operates in large cities, such as Belgrade , Lyon , Pyongyang , São Paulo , Seattle , Sofia , St. Petersburg , and Zurich , as well as in smaller ones such as Dayton , Gdynia , Lausanne , Limoges , Modena , and Salzburg . As of 2020, Kyiv has, due to its history in

2349-529: The 1910s and 1920s  – or trolley ) is an electric bus that draws power from dual overhead wires (generally suspended from roadside posts) using spring-loaded trolley poles . Two wires , and two trolley poles, are required to complete the electrical circuit. This differs from a tram or streetcar, which normally uses the track as the return path, needing only one wire and one pole (or pantograph ). They are also distinct from other kinds of electric buses , which usually rely on batteries . Power

2430-638: The 1980s, systems such as Muni in San Francisco, TransLink in Vancouver, and Beijing , among others, have bought trolleybuses equipped with batteries to allow them to operate fairly long distances away from the wires. Supercapacitors can be also used to move buses short distances. Trolleybuses can optionally be equipped either with limited off-wire capability—a small diesel engine or battery pack—for auxiliary or emergency use only, or full dual-mode capability . A simple auxiliary power unit can allow

2511-511: The Americas, the first low-floor trolleybus was a Busscar vehicle supplied to the São Paulo EMTU system in 2001. In North America, wheelchair lifts were again chosen for disabled access in new trolleybuses delivered to San Francisco in 1992–94, to Dayton in 1996–1999, and to Seattle in 2001–2002, but the first low-floor trolleybus was built in 2003, with the first of 28 Neoplan vehicles for

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2592-554: The Breda dual-mode buses had their diesel engines removed, and operated exclusively as trolleybuses until 2016. Since 2004, the MBTA has used dual-mode buses on its Silver Line (Waterfront) route. The last of these were be replaced by diesel hybrid and battery-electric buses in June 2023. IMC (In Motion Charging) trolleybuses are equipped with a light-weight battery, the size of which is adapted to

2673-782: The Italian builders Alfa Romeo (2,044) and Fiat (approx. 1,700). The largest former trolleybus manufacture is Trolza (formerly Uritsky, or ZiU) since 1951, until they declared their bankruptcy in 2017, building over 65000 trolleybuses. Also, Canadian Car and Foundry built 1,114 trolleybuses based on designs by Brill. As of the 2010s, at least 30 trolleybus manufacturers exist. They include companies that have been building trolleybuses for several decades, such as Škoda since 1936 and New Flyer , among others, along with several younger companies. Current trolleybus manufacturers in western and central Europe include Solaris , Van Hool , and Hess , among others. In Russia ZiU/Trolza has historically been

2754-601: The US, some systems subscribed to the all-four concept of using buses, trolleybuses, streetcars ( trams, trolleys) , and rapid transit subway and/or elevated lines (metros), as appropriate, for routes ranging from the lightly used to the heaviest trunk line. Buses and trolleybuses in particular were seen as entry systems that could later be upgraded to rail as appropriate. In a similar fashion, many cities in Britain originally viewed trolleybus routes as extensions to tram (streetcar) routes where

2835-695: The United Kingdom, but there were a few, usually solitary, instances of such trolleybuses being built in other countries, including in Germany by Henschel (for Hamburg); in Italy, by Lancia (for Porto, Portugal); in Russia, by the Yaroslavl motor plant (for Moscow) and in Spain, by Maquitrans (for Barcelona). British manufacturers of double-deck trolleybuses included AEC , BUT , Crossley , Guy , Leyland , Karrier , Sunbeam and others. In 2001, Citybus (Hong Kong) converted

2916-563: The United States (and in Britain, as noted above) came into existence when a trolley or tram route did not have sufficient ridership to warrant track maintenance or reconstruction. In a similar manner, a proposed tram scheme in Leeds, United Kingdom, was changed to a trolleybus scheme to cut costs. Trolleybuses are uncommon today in North America, but their use is widespread in Europe and Russia. They remain common in many countries which were part of

2997-493: The United States. In 1899, another vehicle which could run either on or off rails was demonstrated in Berlin. The next development was when Louis Lombard-Gérin operated an experimental line at the Paris Exhibition of 1900 after four years of trials, with a circular route around Lake Daumesnil that carried passengers. Routes followed in six places including Eberswalde and Fontainebleau. Max Schiemann on 10 July 1901 opened

3078-623: The battery due to its smaller size, no delays for charging at end stops as the vehicle charges while in motion and reduced need for dedicated charging stations that take up public space. This new development allows the extension of trolleybus routes or the electrification of bus routes without the need to build overhead wires along the whole length of the route. Cities that utilize such trolleybuses include Beijing , Ostrava , Shanghai , Mexico City , Saint Petersburg , and Bergen . The new trolleybus systems in Marrakesh , Baoding and Prague are based exclusively on battery trolleybuses. In 2020,

3159-508: The capital city of Oslo. There are more than 100,000 inhabitants in the municipality, though the city is the regional capital of an area with around 82,000 residents. Drammen, and its adjacent communities, are experiencing more socioeconomic and population growth than ever before. The city makes good use of the Drammensfjord , a waterway utilised for recreation, fishing and other activities, as well as waterfront housing. The Old Norse form of

3240-456: The city centre has seen the introduction of new housing, shopping facilities, restaurants, cafes and bars, as well as a public pathway along the Drammenselva river. In 2011, Drammen observed its 200th anniversary with many citywide jubilee celebrations. Drammen's district heating system was upgraded to use water-sourced heat pumps , drawing on local fjord water, to support population growth in

3321-492: The city of Berlin , Germany announced plans to build a new trolleybus system with 15 routes and 190 battery trolleybuses. However, in early 2023 it was announced that the planned lines would use battery powered electric buses instead. Introducing new flexible, high-capacity public transport of in motion charging (IMC) trolleybuses are electric buses that can charge dynamically via an overhead contact network and can run on batteries for up to half of their route. Because an IMC bus

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3402-402: The city's name was Drafn , and this was originally the name of the inner part of Drammensfjord . The fjord is, however, probably named after the river Drammenselva (Norse Drǫfn ), and this again is derived from drǫfn f ' wave '. The coat-of-arms is from modern times. They were granted on 17 November 1960. The arms has a silver-colored column on top a silver-colored bedrock crossed with

3483-550: The city. Drammen is one of the larger cities in Norway, and lies about 40 kilometres (25 mi) from the capital of Norway, Oslo . The city centre lies at the end of a valley , on both sides of the Drammenselva river, and where the river meets the Drammensfjord . The Holmen island in Drammen is also the main harbor for car and fruit import in Norway. The Drammen region is part of the metropolitan region around Oslo and

3564-490: The cost of constructing or restoring track could not be justified at the time, though this attitude changed markedly (to viewing them as outright replacements for tram routes) in the years after 1918. Trackless trolleys were the dominant form of new post-World War I electric traction , with extensive systems in among others, Los Angeles, Chicago , Boston , Rhode Island , and Atlanta ; San Francisco and Philadelphia still maintain an "all-four" fleet. Some trolleybus lines in

3645-532: The countries where they have operated. The United Kingdom has the largest number of preserved trolleybuses with more than 110, while the United States has around 70. Most preserved vehicles are on static display only, but a few museums are equipped with a trolleybus line, allowing trolleybuses to operate for visitors. Museums with operational trolleybus routes include three in the UK – the Trolleybus Museum at Sandtoft ,

3726-418: The country's fifth largest urban area, it extends far beyond the municipal boundaries; into the municipalities of Lier , Asker , Øvre Eiker and Holmestrand . The total population of the settlement is 110,236 inhabitants as of 1 January 2021. In 2008 Drammen won the prestigious prize for the best city development in Europe. Drammen has a humid continental climate (Dfb). Located at a sheltered location at

3807-415: The disadvantages listed may be applicable only with a specific technology or design. With the re-introduction of hybrid designs, trolleybuses are no longer tied to overhead wires. The Public Service Company of New Jersey , with Yellow Coach , developed "All Service Vehicles"; trackless trolleys capable of operating as gas-electric buses when off wire, and used them successfully between 1935 and 1948. Since

3888-926: The farm became property of the Crown at which time the farm then served as the residence of the king's bailiffs until 1668. Buskerud extended from Hurum at the Oslofjord to the Halling mountains and Hardanger . The county was conventionally divided into traditional districts. These were Hallingdal , Numedal , Ringerike , Lower Buskerud, which was originally part of Vestfold , and Western Vingulmark . Hallingdal consisted of Flå , Nes , Gol , Hemsedal , Ål and Hol . Numedal consisted of Flesberg , Rollag and Nore og Uvdal . Ringerike consisted of Hole , Krødsherad , Modum , Ringerike and Sigdal . Western Vingulmark consisted of Hurum and Røyken . Lower Buskerud consisted of Drammen , Hurum , Kongsberg , Lier , Nedre Eiker , Røyken and Øvre Eiker . The district

3969-576: The first trolleybus system in Scandinavia , the Drammen trolleybus . The lines ran until 1967. For many years the centre of Drammen suffered from heavy traffic. In 1970, Drammen Bridge with two lanes on European route E18 was built (expanded to four lanes in 2006) and in 1999 the opening of the Bragernes tunnel ( Bragernestunnelen ) diverted additional traffic away from the centre of the city. In recent years,

4050-627: The first cities to put trolleybuses into service in Great Britain, on 20 June 1911. Supposedly, though it was opened on 20 June, the public was not admitted to the Bradford route until the 24th. Bradford was also the last city to operate trolleybuses in the UK; the system closed on 26 March 1972. The last rear-entrance trolleybus in service in Britain was also in Bradford and is now owned by the Bradford Trolleybus Association . Birmingham

4131-407: The first signs of human activity in the area. The largest rock carving at Åskollen depicts a moose . Drammen originally consisted of three small seaports : Bragernes (on the northern side of the Drammenselva river) and Strømsø and Tangen (both on the southern side of the river). For trade purposes, small seaports were placed under market towns. Despite their geographical proximity, Bragernes

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4212-401: The first switch (before the intersection) would be used to access the right-turn lanes, and the second switch (usually in the intersection) would be for the left-turn). Three common types of switches exist: power-on/power-off (the picture of a switch above is of this type), Selectric, and Fahslabend. A power-on/power-off switch is triggered if the trolleybus is drawing considerable power from

4293-688: The first two low-floor trolleybus models were introduced in Europe, both built in 1991, a "Swisstrolley" demonstrator built by Switzerland's NAW / Hess and an N6020 demonstrator built by Neoplan . The first production-series low-floor trolleybuses were built in 1992: 13 by NAW for the Geneva system and 10 Gräf & Stift for the Innsbruck system  [ de ] . By 1995, such vehicles were also being made by several other European manufacturers, including Skoda , Breda , Ikarus , and Van Hool . The first Solaris "Trollino" made its debut in early 2001. In

4374-499: The former Soviet Union countries, Belarus' Belkommunmash built its first low-floor trolleybus (model AKSM-333) in 1999, and other manufacturers in the former Soviet countries joined the trend in the early 2000s. However, because the lifespan of a trolleybus is typically longer than that of a motorbus, the budget allocation and purchase typically factored in the longevity; the introduction of low-floor vehicles applied pressures on operators to retire high-floor trolleybuses that were only

4455-465: The former Soviet Union, the largest trolleybus system in the world in terms of route length while another formerly Soviet city, Minsk , has the largest system in terms of number of routes (which also date back to the Soviet era). Landskrona has the smallest system in terms of route length, while Mariánské Lázně is the smallest city to be served by trolleybuses. Opened in 1914, Shanghai's trolleybus system

4536-483: The gallery, temporary exhibitions and museum café, Halling yard, with 5 old buildings, the oldest from 1760s. The museum also includes the two largest preserved like farms in Drammen, Gulskogen Manor and Austad farm . The Drammen Spiral is a road tunnel that allows access to the Skansen Ridge , 180 m (591 ft) above the town. It opened in 1961 on the site of a former quarry. Drammen Theater in Bragernes

4617-473: The head of a narrow fjord branch of innermost Oslofjord, Drammen is one of the warmest cities in Scandinavia in summer. The warmest month on record was July 2018 with mean 22.3 °C (72.1 °F), average daily high 29.3 °C (84.7 °F) and 11 days with highs at or above 30 °C (86 °F). The all-time high 35 °C (95 °F) was recorded August 3, 1982, and is a tie with the national high for

4698-466: The largest producers in North America and Western Europe – ones whose production totalled more than 1,000 units each – included the U.S. companies Brill (approx. 3,250 total), Pullman-Standard (2,007), and Marmon-Herrington (1,624); the English companies AEC (approx. 1,750), British United Traction (BUT) (1,573), Leyland (1,420) and Sunbeam (1,379); France's Vétra (more than 1,750); and

4779-404: The line profile used. This battery allows them not to depend on overhead lines. They can thus operate with a mix of electric wire and batteries (60% of the time on the wire and 40% on the battery). With the development of battery technology in recent years, trolleybuses with extended off-wire capability through on-board batteries are becoming popular. The on-board battery is charged while the vehicle

4860-454: The month. The September record high is the national record. The all-time low −28 °C (−18 °F) was recorded in January 1987, which is the coldest month on record with mean −13.8 °C (7.2 °F) and average daily low −17.1 °C (1.2 °F). In more recent years, December 2010 was almost as cold. The average date for first overnight freeze (low below 0 °C (32 °F)) in autumn

4941-463: The municipalities of Svelvik, Nedre Eiker and Drammen merged to form «The New Drammen Municipality». The new municipality, which is now called Drammen, is Norway's seventh largest with over 100,000 residents. The main seat of the Greater Municipality is located in the city of Drammen. Drammen city had a population of 82.875 inhabitants in 2021, but serves as a regional centre for an area that had

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5022-445: The operator. The frog runners are pushed into the desired position by the trolley shoe, or the frog is shaped so the shoe is guided onto the exit wire without any moving parts. Well over 200 different trolleybus makers have existed – mostly commercial manufacturers, but in some cases (particularly in communist countries ), built by the publicly owned operating companies or authorities. Of the defunct or former trolleybus manufacturers,

5103-522: The overhead wires, usually by accelerating, at the moment the poles pass over the contacts (the contacts are lined up on the wires in this case). If the trolleybus "coasts" through the switch, the switch will not activate. Some trolleybuses, such as those in Philadelphia and Vancouver, have a manual "power-coast" toggle switch that turns the power on or off. This allows a switch to be triggered in situations that would otherwise be impossible, such as activating

5184-621: The past. For an overview, by country, see Trolleybus usage by country , and for complete lists of trolleybus systems by location, with dates of opening and (where applicable) closure, see List of trolleybus systems and the related lists indexed there. Of the systems existing as of 2012, the majority are located in Europe and Asia, including 85 in Russia and 43 in Ukraine. However, there are eight systems existing in North America and nine in South America. Trolleybuses have been preserved in most of

5265-452: The primary transit mode or as a supplement to rapid transit and commuter rail networks. Trolleybuses are quieter than internal combustion engine vehicles. Mainly a benefit, it also provides much less warning of a trolleybus's approach. A speaker attached to the front of the vehicle can raise the noise to a desired "safe" level. This noise can be directed to pedestrians in front of the vehicle, as opposed to motor noise which typically comes from

5346-445: The rear of a bus and is more noticeable to bystanders than to pedestrians. Trolleybuses can share overhead wires and other electrical infrastructure (such as substations ) with tramways. This can result in cost savings when trolleybuses are added to a transport system that already has trams, though this refers only to potential savings over the cost of installing and operating trolleybuses alone. The wires are attached to poles next to

5427-460: The sea, while river Begna sweeps into lake Sperillen . Buskerud was separated from Akershus as an amt of its own in 1685, but the amt was smaller than today. It then consisted of the present districts Eiker , Hallingdal , and Ringerike . The area of the present municipalities of Flesberg , Hurum , Kongsberg , Lier , Nore og Uvdal , Rollag and Røyken were transferred from Akershus amt to Buskerud amt in 1760. The name Buskeruds amt

5508-455: The street and carefully stretched and mounted so that they are the same width apart and same height over the road (usually about 18 to 20 feet (~5.7m)). The pair of wires is insulated from the poles and provides about 500 to 600 volts to the bus below. Trolleybus wire switches (called "frogs" in the UK) are used where a trolleybus line branches into two or where two lines join. A switch may be either in

5589-479: The switch assembly, which power a pair of electromagnets , one in each frog with diverging wires ("frog" generally refers to one fitting that guides one trolley wheel / shoe onto a desired wire or across one wire. Occasionally, "frog" has been used to refer to the entire switch assembly). Multiple branches may be handled by installing more than one switch assembly. For example, to provide straight-through, left-turn or right-turn branches at an intersection, one switch

5670-425: The town's major employers. At Modum there was also Blaafarveværket , a cobalt pigment production works ( Blue Colour Works ). Today, agriculture, lumber, wood-pulp mills and other related industries are the county's main economic activities; ample hydroelectric power is produced by the rivers Begna ( Begnaelva ) and Rands ( Randselva ) . Buskerud has also a large forested area. Substantial income

5751-467: The transition from high-floor to low-floor has meant that some equipment previously placed under the floor has been moved to the roof. Some transit operators have needed to modify their maintenance facilities to accommodate this change, a one-time expense. Since the end of 1997, no double-decker trolleybuses have been in service anywhere in the world, but, in the past, several manufacturers made such vehicles. Most builders of double-deck trolleybuses were in

5832-620: The west side of the Drammen River in Åmot , Modum municipality. The first element is the genitive case of biskup , 'bishop' (referring to the Bishop of Hamar ), the last element is ruð n 'clearing, farm'. The farm was one of the largest in Buskerud, and the original name of the farm (before it became a benefice) was probably Modum . At the time of the Reformation ( c.  1536–39 )

5913-500: The world's fourth passenger-carrying trolleybus system, which operated at Bielatal (Biela Valley, near Dresden ), Germany. Schiemann built and operated the Bielatal system , and is credited with developing the under-running trolley current collection system, with two horizontally parallel overhead wires and rigid trolleypoles spring-loaded to hold them up to the wires. Although this system operated only until 1904, Schiemann had developed what

5994-575: The world's largest trolleybus manufacturer, producing over 65,000 since 1951, mostly for Russia/CIS countries, but after its bankruptcy, its facilities were partially loaned out to PC Transport Systems . Škoda is Western and Central Europe's largest and the second largest in the world, having produced over 14,000 trolleybuses since 1936, mostly for export, and it also supplies trolleybus electrical equipment for other bus builders such as Solaris, SOR and Breda. In Mexico, trolleybus production ended when MASA , which had built more than 860 trolleybuses since 1979,

6075-574: Was acquired in 1998 by Volvo. However, Dina , which is now that country's largest bus and truck manufacturer, began building trolleybuses in 2013. A significant change to trolleybus designs starting in the early 1990s was the introduction of low-floor models, which began only a few years after the first such models were introduced for motorbuses . These have gradually replaced high-floor designs, and by 2012, every existing trolleybus system in Western Europe had purchased low-floor trolleybuses, with

6156-416: Was built in 1869 and was designed by architect Emil Victor Langlet . The theater was the first modern theater in the country. It was designed in a complex Renaissance style with symmetrical facades and round arched windows. After Drammen Theater suffered total destruction by fire in December 1993, a new theater was rebuilt on the model of the original house. It was finished during February 1997. Drammensbadet

6237-629: Was changed to Buskerud fylke in 1919. The municipality of Skoger was transferred from Vestfold to Buskerud in 1964. The area Ringerike may once have been a small kingdom. During the 10th century, Norway's kings Olaf Tryggvason and Olaf Haraldsson grew up at Bønsnes in Ringerike. In the valley of Numedal , silver was mined in Kongsberg from the 17th century until discontinued in 1957. Weapons industry had been developed in Kongsberg from 1814, and various high tech industry companies now represent

6318-473: Was merged from parts that belonged to Vestfold and Vingulmark . Buskerud's western part was a mountainous plateau with forested valleys and high, grassy pastures; its eastern part contains a lowland basin with many lakes and streams. Tyrifjorden and Krøderen were the biggest lakes. Numedalslågen , the third longest river in Norway, starting in Hordaland , ran through Buskerud unto Vestfold where it reached

6399-411: Was placed under Christiania and Strømsø under Tønsberg . For this reason, cooperation between the adjacent seaport towns was almost impossible. In 1662, a merger was proposed to unite Strømsø and Bragernes to form a market town with the name Frederiksstrøm. The proposal was rejected by King Frederick III . Bragernes received limited market town rights in 1715, and merged with Strømsø to gain status as

6480-539: Was the first UK city to replace a tram route with trolleybuses, while Wolverhampton , under the direction of Charles Owen Silvers, became world-famous for its trolleybus designs. There were 50 trolleybus systems in the UK, London's being the largest. By the time trolleybuses arrived in Britain in 1911, the Schiemann system was well established and was the most common, although the Cédès-Stoll (Mercédès-Électrique-Stoll) system

6561-549: Was tried in West Ham (in 1912) and in Keighley (in 1913). Smaller trackless trolley systems were built in the US early as well. The first non-experimental system was a seasonal municipal line installed near Nantasket Beach in 1904; the first year-round commercial line was built to open a hilly property to development just outside Los Angeles in 1910. The trackless trolley was often seen as an interim step, leading to streetcars . In

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