SL79

This is a good article. Click here for more information.
Source: Wikipedia, the free encyclopedia.

SL79
In service1982–present
Manufacturer
Built at
Replaced
standard gauge

SL79 is a class of 40

standard gauge
.

They were built in two series, the first of 25 units delivered in 1982–84, and the second of 15 units delivered in 1989–90. The first 10 units were built by Duewag, while the last 30 were built in Norway by Strømmen. They were numbered 101 through 140. The two series vary slightly in specifications. The trams were ordered in 1979 after the 1977 decision to not close the tramway, after the SM53 were finished delivered in 1958. The SL79 mainly serves on lines 11, 12 and 19. However, during rush hour, SL79 trams supplement SL95s on line 13. Except those with an advertising livery, the trams are painted a light blue.

The SL79 trams, along with the flawed SL95 trams is currently being replaced by SL18 trams between 2020 and 2024.[3][4]

History

A light-blue tram
No. 103 upon delivery in 1982

In 1960, the Oslo City Council decided to gradually close the tramway. New trams had been delivered in 1958, and it was decided that lines would only be closed as trams were naturally retired. At the time Oslo Sporveier had 421 vehicles. By 1974, the company had 163 vehicles, of which 100 were powered trams, 43 were trailers and 20 were working trailers. Following the

Gothenburg Tramway.[5]

In the 1950s, Duewag started to develop an articulated variation of its four-axle Großraumwagen, based on articulation technology used by trams in Rome. This design was delivered to many tramways, particularly in Germany. In 1977 and 1978, Oslo Sporveier tested a Duewag GT8S (3052) tram from

Helsinki, Finland, and Hanover, Germany.[5]

The first Norwegian-built tram was delivered on 16 February 1983 and put into service on 9 March. The last unit was put into service on 10 January 1984. The Strømmen trams were numbered 111 through 125. There were few problems in the start, although the

Class E. The remaining trams of the first series were put into service on Line 1, on the Sinsen Line and the Briskeby Line, as well as Line 7, on the Ullevål Hageby Line and the Sinsen Line. On Line 9, that included both the tramway's light rail sections, only SL79-trams were used, while lines 1 and 7 used a mix of SL79 and SM53-trams.[5]

Holtet on the Ekeberg Line
—one of two tramways remaining as suburban light rails.

Fifteen additional trams were built by Strømmen as series two. The first vehicle was delivered on 4 August 1989 and was taken into service on 11 October, while the last was put into service on 27 August 1990. These were numbered 126 through 140. From 7 September 1990 to 1 February 1991, tram 140 was used on the tramway in

Djurgården Line of the heritage tramway in Stockholm, Sweden.[5] Due to a labor dispute about privatizing the operation of the tramway and the Oslo Metro, the ownership of all trams and metro trains, including the SL95, were transferred to the municipally owned limited company Oslo Vognselskap in 2007.[6]

Suggestions have been made to extend the trams with another center section, adding another axle and articulation, but these plans have been rejected by the company. Such a center section would be low-floor and give much easier access for strollers and wheelchairs, and allow the whole tram network to have step-free access. As of 2008, it was estimated that the SL79-series has about ten more years of service before it needs to be replaced.[5]

In February 2017, the unit no. 108 reached its mileage of two million kilometres (1.2 million miles), which is equivalent to 50 times around the Earth, or "50,000 times" around the tram network, after its 34 years of service.[7][8]

Sporveien and the Oslo City Council have decided in 2018 to purchase 87 tramcars from

SL18, which will replace both the SL79 and the SL95 units.[3][4]

The first deliveries of SL18 were made in September 2020.[9] The first SL79 unit was scrapped on 17 January 2023,[1] with the remaining units expected to be replaced by 2024.[10]

Operations

Majorstuen
.

The SL79 make up 40 of the 72 trams in the system, supplementing the newer

Rikshospitalet, the tramway received its first terminus without a balloon loop, making it necessary for lines 17 and 18 to be served only by SL95 units. These also serve line 13, since it is a continuation of the service along the Sinsen Line from Majorstuen.[11][12] The SL79 operate on the Briskeby, Ekeberg, Frogner, Gamleby, Grünerløkka–Torshov, Kjelsås and Vika Lines. Each service has a ten-minute headway, giving a five-minute interval on section that are served by two lines.[13]

Specifications

The SL79 is an articulated tram built exclusively for the

Asea Brown Boveri at their Norwegian subsidiary NEBB. The trams have a steel frame and are 22,180 millimeters (873 in) long and 2,500 millimeters (98 in) wide. Without payload the trams weigh 32,800 kilograms (72,300 lb).[14]

A row of seats facing forwards in a tram, with a door hidden to the right
Interior view of a SL79/II.

Each tram has a total capacity of 162 riders, of which 71 can be seated. Seating is at three or four abreast. Series two was delivered with vandal-proof seats that proved uncomfortable and were replaced. The floor is 880 millimeters (35 in) above the tracks. The trams have four doors on the right side. The first series also have a single door on the left side, and the back right door was made single to match this. On series two, there are four double doors on the right side and none on the left side. SL79 was the first tram to be delivered with color-coded destination signs. By 2007, all the trams had had their rolling signs replaced by LED-type signs.[14]

The trams have three

dynamic brake, that is capable of 1.3 m/s2 (4.3 ft/s2) retardation with regeneration, allowing the braking power to be fed back to the overhead wires. In addition, there are disc brakes capable of 3.0 m/s2 (9.8 ft/s2).[14]

Except those with an advertising livery, the trams are painted a light blue. The first series was delivered with a deeper blue color than has been tradition with Oslo Sporveier trams, but all have since been repainted to match the standard livery. Prior to the delivery of the second series, a single tram was painted deep red to match the buses and the

T1000 trains used on the Oslo Metro. Due to negative feedback from the riders, the historic color was kept.[5]

References

Wikimedia Commons has media related to SL-79.
  1. ^ a b "Oslo-trikken får sin siste hvile. Nå skal den varme hjem og hytter i hele Norge". www.aftenposten.no (in Norwegian Bokmål). 17 January 2023. Retrieved 17 January 2023.
  2. ^ "Norge -> Sporvogner -> Oslo: SL79/I | Jernbane.net". Archived from the original on 2021-04-19. Retrieved 2021-11-07.
  3. ^ a b "Oslos nye trikker: Si hei til SL18! (Oslo's new trams: say hello to SL18!)". Fremtidens Byreise (in Norwegian). Archived from the original on 12 June 2018. Retrieved 11 June 2018.
  4. ^ a b Eggesvik, Olav; Mellingsæter, Hanne. "Oslo skal kjøpe 87 Spania-trikker til mer enn fire milliarder (Oslo will purchase 87 Spanish trams for more than 4 billion NOK)". Aftenposten (in Norwegian). Archived from the original on 11 June 2018. Retrieved 11 June 2018.
  5. ^ a b c d e f Andersen, Bjørn (2008). "Oslos leddvogner 25 år". Lokaltrafikk (in Norwegian). 67: 4–8.
  6. Norwegian Broadcasting Corporation (in Norwegian). Archived from the original
    on 22 May 2010. Retrieved 28 March 2009.
  7. ^ "Sporveien hedrer trofast sliter". Sporveien (in Norwegian). Archived from the original on 24 February 2017. Retrieved 27 November 2020.
  8. ^ Kjelstrup, Karl Andreas (20 February 2017). "Denne trikken har kjørt 50 ganger rundt jorda". Nordre Aker Budstikke (in Norwegian). Archived from the original on 27 September 2020. Retrieved 27 November 2020.
  9. ^ "Hurra, trikken er i Oslo!". Fremtidens bereise (in Norwegian Bokmål). Retrieved 17 January 2023.
  10. ^ "Første Oslo-trikk kjørt til hugging". NRK (in Norwegian Bokmål). 17 January 2023. Retrieved 17 January 2023.
  11. ^ Andersen, Bjørn (2000). "SL 95". Lokaltrafikk (in Norwegian). 43: 4–11.
  12. ^ Andersen, Bjørn (2000). "SL95, en presentasjon". Lokaltrafikk (in Norwegian). 43: 4–10.
  13. ^ Ruter (2009). "Rutehefte Trikk" (PDF). Archived from the original (PDF) on 8 April 2010. Retrieved 25 August 2009.
  14. ^ a b c Duewag (1982). Bybanevogn S79 (in Norwegian).
Retrieved from "https://en.wikipedia.org/w/index.php?title=SL79&oldid=1205808654"
This page is based on the copyrighted Wikipedia article: SL79. Articles is available under the CC BY-SA 3.0 license; additional terms may apply.Privacy Policy