sentences:  In 2019, all municipalities the rail line would pass through have approved a cooperation agreement on zoning related to the project except Hafnarfjörður, with "Morgunblaðið" reporting that a meeting with the mayor of Hafnarfjörður has been scheduled.Once fully agreed, construction work could begin as early as 2022.There have also been serious proposals for a light rail system for the Capital Region (Reykjavík, Kópavogur, Hafnafjörður).