Curitiba has been an international reference point for progressive urban planning and bus rapid transit (BRT) since the 1970s. Now, almost 50 years later, and confronted with climate change and a burgeoning urban mobility crisis, Curitiba is seeking to reaffirm its international reputation: the Curitiba Ecoelétrico project seeks to integrate fossil fuel alternatives and technological advancements into Curitiba's urban mobility strategy.