• Buenos Aires, Argentina

City Summary

Buenos Aires is the capital and the largest city of Argentina. It is also the second-largest metropolitan area in South America. Every month, between 195 and 200 million passengers use the various modes of urban and suburban transport in the city. The transport sector currently accounts for 35% of the total CO2 emissions in Buenos Aires and 90% of these are from private motorized vehicles.

Main challenges the city faces include traffic congestion, the lack of pedestrian dedicated areas, and an inefficient public transport infrastructure. These issues led to the Sustainable Mobility Plan (2009) that focused on creating a safer city with a reliable, connected and accessible public transport system. Among the successes driven by the plan is the extension of the cycling network, creation of a public rental system and design of pedestrian improvements. The project “Legible City” addresses the accessibility issue by providing information through a clear and coherent way-finding system.

Buenos Aires has been designing urban development centered on mobility, sustainability and quality of life for its residents. Buenos Aires is now leading the way as a model city for ecomobility within Argentina and among city leaders around the world. Acknowledgement of their efforts has come from the International Transport Forum’s Transport Achievement Award 2017 presented to the city for its new Metrobus corridor.

Targets/ Vision

Through Buenos Aires’ Sustainable Mobility Plan (2009), the city prioritizes public transportation and promotes active mobility, such as cycling and walking, so that everyone can enjoy commuting in the city. The main pillars of the mobility plan are:

  • Public transport priority: Encourage the use of public transport which carries 40-50 people in the same space occupied by two cars carrying 3-4 people per car.
  • Healthy mobility: Promote healthy mobility in bicycle paths and pedestrian infrastructure in the whole city of Buenos Aires.
  • Traffic ordinance and road safety: Reduce and prevent road accidents through awareness and enforcement.
  • Intelligent Traffic System (ITS: include new tools such as smart signaling, electronic ticketing, integrated timetables and fares, for the management of traffic that facilitate movement within the city of Buenos Aires.

Achieved results


  • 100 blocks of low-speed local traffic of 10 km per hour
  • Wrote a Street Design Manual for Buenos Aires
  • Created a 100 city block Pedestrianisation and Improvement Scheme


  • Added 192 km of bike paths and lanes
  • Ecobici bike sharing system since 2010 with 200 stations, 2,500 bicycles, and more than 5 million trips.

Public Transport:

  • The new bus system transports over 4 million people every day and decreases their travel time by around 50%. As a result, car traffic has dropped in the city center by 85% and annual CO2 emissions are down by 5.612 tons.
  • There are 8 corridors that make up the BRT system: Metrobus Juan B. Justo, 9 de Julio, Sur, Norte I, AU 25 de Mayo, San Martín, Norte II and Del Bajo.

City Statistics

Population (2010)
Area (in sq. kms)

Modal split

  • Walking 24.9%
  • Cycling 1.2%
  • Public transport 48.2%
  • Shared mobility 5.4%
  • Motorcycle 0.6%
  • Personal Car 19.5%


Reduce 30% of GHG emissions by 2030 according to the 2015 baseline scenario (BAU)

City News

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