Editing Stockholm (section)

=== Public transportation ===
[[File:SL C20 Gamla Stan, Stockholm.jpg|thumb|left|A southbound full-length (3 car) [[Bombardier C20|C20 metrotrain]] departing from the [[Gamla stan metro station|Gamla Stan station]]]]
Stockholm has an extensive [[public transport]] system. It consists of the [[Stockholm Metro]] ({{langx|sv|Tunnelbanan}}), which consist of three colour-coded main systems (green, red and blue) with seven lines (10, 11, 13, 14, 17, 18, 19); the [[Stockholm commuter rail]] ({{langx|sv|Pendeltåget}}) which runs on the state-owned railroads on six lines (40, 41, 42, 43, 44, 48); four [[Trams in Stockholm|light rail/tramway lines]] ([[Spårväg City|7]], [[Nockebybanan|12]], [[Lidingöbanan|21]], and [[Tvärbanan|22]]); the [[Swedish three foot gauge railways|891 mm]] [[narrow-gauge railway]] [[Roslagsbanan]], on three lines (27, 28, 29) in the northeastern part; the local railway [[Saltsjöbanan]], on two lines (25, 26) in the southeastern part; a large number of bus lines, and the inner-city [[Djurgården ferry]]. The overwhelming majority of the land-based public transport in Stockholm County (save for the airport buses/[[Arlanda Express|airport express trains]] and other few commercially viable bus lines) is organized under the common umbrella of [[Storstockholms Lokaltrafik]] (SL), an {{Lang|sv|[[aktiebolag]]}} wholly owned by [[Stockholm County Council]]. Since the 1990s, the operation and maintenance of the SL public transport services are contracted out to independent companies bidding for contracts, such as [[MTR Corporation|MTR]], which operate the Metro. The archipelago boat traffic is handled by [[Waxholmsbolaget]], which is also wholly owned by the County Council.

[[File:Number 7 tram bound for Sergels Torg in Stockholm Sweden.png|thumb|right|An [[Bombardier Flexity Classic|A34 tram]] on [[Spårväg City|line 7]] at [[Djurgårdsbron]]]]
SL has a common ticket system in the entire Stockholm County, which allows for easy travel between different modes of transport. The tickets are of two main types, single ticket and [[travel card]]s, both allowing for unlimited travel with SL in the entire Stockholm County for the duration of the ticket validity. On 1 April 2007, a zone system (A, B, C) and price system was introduced. Single tickets were available in forms of cash ticket, individual unit pre-paid tickets, pre-paid ticket slips of 8, SMS-ticket and machine ticket. Cash tickets bought at the point of travel were the most expensive and pre-paid tickets slips of 8 are the cheapest. A single ticket costs SEK&nbsp;32 with the card and SEK&nbsp;45 without and is valid for 75 minutes. The duration of the travel card validity depended on the exact type; they were available from 24 hours up to a year. As of 2018, a 30-day card costs SEK&nbsp;860. Tickets of all these types were available with reduced prices for students and persons under 20 and over 65 years of age. On 9 January 2017, the zone system was removed, and the cost of the tickets was increased.<ref>{{Cite web |title=Nya priser 2017 - SL |url=http://sl.se/sv/info/nyheter/nya-priser-2017/?date=true |url-status=dead |archive-url=https://web.archive.org/web/20170319115629/http://sl.se/sv/info/nyheter/nya-priser-2017/?date=true |archive-date=19 March 2017 |access-date=19 March 2017 }}</ref>

==== The City Line Project ====
{{Main|Stockholm City Line}}
With an estimated cost of SEK&nbsp;16.8&nbsp;billion (January 2007 price level), which equals 2.44&nbsp;billion US dollars, the [[Stockholm City Line|City Line]], an environmentally certified project, comprises a {{convert|6|km|abbr=on}}-long commuter train tunnel (in rock and water) beneath Stockholm, with two new stations (Stockholm City and Stockholm Odenplan), and a {{convert|1.4|km|abbr=on}}-long railway bridge at [[Enskede-Årsta|Årsta]]. The City Line was built by the Swedish Transport Administration in co-operation with the City of Stockholm, Stockholm County Council, and Stockholm Transport, SL. As [[Stockholm Central Station]] is overloaded, the purpose of this project was to double the city's track capacity and improve service efficiency. Operations began in July 2017.<ref name="trafikverket1">{{Cite web |title=The Stockholm City Line |url=http://www.trafikverket.se/en/startpage/projects/Railway-construction-projects/The-Stockholm-City-Line/ |access-date=28 July 2017 |publisher=[[Swedish Transport Administration]]  |archive-date=30 July 2017 |archive-url=https://web.archive.org/web/20170730015258/http://www.trafikverket.se/en/startpage/projects/Railway-construction-projects/The-Stockholm-City-Line |url-status=live }}</ref><ref>{{Cite magazine |last=Barrow |first=Keith |date=10 July 2017 |title=Stockholm City Line opens |url=http://www.railjournal.com/index.php/commuter-rail/stockholm-city-line-opens.html |magazine=[[International Railway Journal]] |access-date=28 July 2017 |archive-date=28 July 2017 |archive-url=https://web.archive.org/web/20170728213510/http://www.railjournal.com/index.php/commuter-rail/stockholm-city-line-opens.html |url-status=live }}</ref>

Between [[Riddarholmen]] and Söder Mälarstrand, the City Line runs through a submerged concrete tunnel.<ref name="trafikverket1" /> As a green project, the City Line includes the purification of waste water; noise reduction through sound-attenuating tracks; the use of synthetic diesel, which provides users with clean air; and the recycling of excavated rocks.<ref name="trafikverket1" />