The electric train was a main campaign promise for Alvarado, who was elected as president of Costa Rica in 2018.
Costa Rica on Monday introduced the new self-propelled diesel train carriages on passenger routes across the Greater Metropolitan Area.
The cashless system will make Costa Rica public transit more efficient, as well as improving sanitary conditions.
The Costa Rican Railway Institute (INCOFER) is testing the eight self-propelled train carriages
Costa Rica this year added 727 new electric vehicles for a total of 3,106 registered in the country.
Costa Rica's decarbonization plan, which seeks to transform the economy through low-emission transport and production systems, will provide the country with net economic benefits of $41 billion over 30 years.
The electric train would transport 200,000 people each day throughout the Greater Metropolitan Area, linking the cities of Cartago, San José, Heredia and Alajuela.
The Central Bank of Costa Rica projected a 3.6% drop in GDP this year, instead of the 2.5% growth originally anticipated, as a consequence of the pandemic.