Public transport of passengers is one of the development axis of the communities, due to
the positive impact on socio-economic activities and its link between central and peripheral
communities. In the city of Salta this situation also occurs, where public passenger
transport is conceived as a metropolitan service. Such transport meets the population’s
need for mobility and, among its impact, contributes to the generation of greenhouse gases
from combustion engine emissions. This paper presents an estimate of CO2 emissions in
urban passenger transport in Salta, based on the collection of data on fuel consumption and
distances. At the same time, it analyzes the CO2 emissions as a consequence of the
COVID-19 pandemic. The results allow to visualize a trend of this emissions.
