Overview
- The regional government published the alternatives on its transparency portal, launching the formal public consultation period.
- The study flags a preferred plan to extend Line 1 north from Chamartín while reassigning the Pinar de Chamartín–Bambú–Chamartín segment to Line 4.
- Four other options propose an independent line tied to Line 10 with east and west variants toward Las Tablas or Montecarmelo at different depths.
- All scenarios include three provisional stations—Centro de Negocios, Fuencarral Sur and Fuencarral Norte—with officials estimating benefits for over 175,000 people.
- Authorities will assess submissions and formal reports before sending a recommendation to the Council of Government, with timelines unstated and any 2030 service indications described as tentative.