Metro
The Metro is the rapid transit system serving Madrid as well as some suburbs. Founded in 1919, it underwent extensive enlargement in the second half of the 20th century.
It is the second longest metro system in Europe (after London’s) at 294 km. As of 2019, it has 302 stations. Only the Métro of Paris has more stations.
Cercanías
Cercanías Madrid is the commuter rail service used for longer distances from the suburbs and beyond into Madrid, consisting of nine lines totalling 578 km and more than 90 stations. With fewer stops inside the centre of the city they are faster than the Metro, but run less frequently. This system is connected with Metro (presently 22 stations) and Light Metro.
Buses
There is a dense network of bus routes, run by the municipal company Empresa Municipal de Transportes (or EMT Madrid), which operates 24 hours a day; special services called “N lines” are run during nighttime. The special Airport Express Shuttle line connecting the airport with the city centre features distinctively yellow buses. In addition to the urban lines operated by the EMT, the green buses (interurbanos) connect the city with the suburbs. The later lines, while also regulated by the CRTM, are often run by private operators.
Almost half of all journeys in the metropolitan area are made on public transport, a very high proportion compared with most European cities.
Taxi
The taxicabs are regulated by a specific sub-division of taxi service, a body dependent of the Madrid City Council. The authorisation entails a badge for the vehicle and a license for the driver, who has to be older than 18.
Airport
Madrid is also home to the Madrid-Barajas Airport, the sixth-largest airport in Europe, handling over 60 million passengers annually, of whom 70% are international travellers, in addition to the majority of Spain’s air freight movements.
Barajas is a major European hub, yet a largely westward facing one, specialized in the Americas, with a comparatively lighter connectivity to Asia. Madrid’s location at the centre of the Iberian Peninsula makes it a major logistics base.
The smaller (and older) Cuatro Vientos Airport has a dual military-civilian use and hosts several aviation schools. The Torrejón Air Base, located in the neighbouring municipality of Torrejón de Ardoz, also has a secondary civilian use aside from the military purpose.