The implementation of grass tracks is uncommon in Stockholm compared to Central Europe where it is more popularized. As more tram projects are planned in the future such as the Spårväg Syd project, the aim of this study is to explore the role of grass tracks in the public transport sector by theoretically conceptualising grass tracks as a green infrastructure strategy. The research questions were to study how residents perceive the grass track between Sicka Udde and Sickla Station, and how the grass track could contribute to noise concerns, traffic safety, and financial resource in the Spårväg Syd project. Qualitative methods were used in which online surveys were sent out to residents in Hammarby Sjöstad and interviews with the municipality and county workers from Lund, Norrköping and Stockholm were conducted. The result showed that the resident was more positive about the grass track compared to the municipality and county workers which highlighted the additional cost and work effort to provide the public with a well-maintained and visually attractive grass track. The conclusion of this study has covered previous and new discoveries which open discussions for further reflection on what project planners shall consider before deciding to implement grass tracks in future tram projects.

Utbyggnaden av spårvägen Linje 7 i Stockholm som ska utmynna i Spårväg City har tagit sin början. Vilka typer av spårvägskonstruktioner som ska användas på alla de ingående sträckorna är däremot inte bestämt. Grässpår är ett alternativ, men kunskapen om grässpår är inte stor i Stockholmsregionen på grund av att denna spårvägstyp tidigare inte projekterats i regionen. Denna rapport ska underlätta valet genom informationshämtning från intervjuer, möten, mejlkontakt, studiebesök och litteraturstudier. Grässpåret jämförs med gatuspår i asfalt som används i Spårväg City. Ballastspår på egen banvall är den enklaste spårvägskonstruktionen, och används i jämförelserna. Dock kommer den konstruktionen inte att användas på Spårväg City. De olika spårvägskonstruktionerna jämförs utifrån anläggningskostnader samt underhållskostnader för de olika konstruktionstyperna. En grundlig jämförelse har även gjorts byggtekniskt. Vid jämförelsen av de olika konstruktionerna så var gatuspår i asfalt den dyraste att anlägga, cirka 20 000kr/m. Det var mer än 3 gånger så dyrt som grässpåret med en kostnad på cirka 6000kr/m, som i sin tur var marginellt dyrare än ballastspåret på egen banvall med en kostnad på cirka 3000kr/m. Även underhållskostnaden var betydligt högre för gatuspåret i asfalt. Gatuspåret i asfalt var nästan dubbelt så dyrt som grässpåret att underhålla. Grässpåret i sin tur var lite mer än dubbelt så dyrt som ballastspåret på egen banvall att underhålla. Gatuspåret i asfalt fick en underhållskostnad på cirka 160 000 kr/km & år, grässpåret fick en underhållskostnad på cirka 85 000kr/km & år, och för ballastspår på egen banvall cirka 40 000kr/km & år. / The extension of the tramway line 7 in Stockholm, which will culminate in “Spårväg City”, has begun. Which types of tramway constructions to use on all the included distances has not been decided. Grass Track is an option, but there’s a lack of knowledge of the grass track in Stockholm because this type of tramway has not been projected before in the region. This report will simplify the selection, by information extraction from interviews, meetings, e-mail contact, field trips and literature studies.  The grass track will be compared with street track in asphalt which is used in “Spårväg City”. Ballast track on its own embankment is the simplest tramway construction, and is used in the comparisons. However, the design is not to be used on “Spårväg City”. The various tramway constructions are compared by the construction costs and the maintenance costs for the different construction types. A thorough comparison has also been made in the construction technical part.  When comparing the different constructions, it was the street track in asphalt that was the most expensive to construct about 20 000kr/m. It was more than 3 times as expensive as the grass track with a cost of about 6000kr/m, which in turn was marginally more expensive than the ballast track on its own embankment with a cost of about 3000kr/m. Even the maintenance cost was significantly higher for street track in asphalt. The street track in asphalt was almost twice as expensive as the grass track to maintain. The grass track in turn was a little more than twice as expensive as the ballast track on its own embankment to maintain. The street track in asphalt had a cost of about 160 000kr/km & year, the grass track had a cost of about 85 000kr/km & year, and the ballast track on its own embankment had a cost of about 40 000kr/km & year.