The Metro de Medellin Master plan focuses on an extensive reform on the transportation systems of the city in order to reduce the overall vehicular emissions, and thus put the city on the path to greatly improved air quality by 2040.

This plan is created by the local government of the Aburra Valley of Medellin. The plan was introduced as a result of the worsening air pollution crisis in Medellin as a means to reduce the overall transportation related emissions to improve the air quality between now and 2040. Based on studies of the area by researchers, the overall level of transportation emissions has increased by 9.5% between 2005 and 2012 (13.5% to 23%).

The overarching goal of the Master Plan was to reduce transportation emissions, improve energy efficiency, and to keep it accessible to low-income citizens by keeping them cheap to utilize. Additionally, the government understood that the backbone of the transportation system of the city was built on the metro, which is made up of buses, trams, gondolas, and other transports, and the best way to reduce emissions would be to create an intricate and convenient transportation system that could accommodate the entire population.