The main objective of this work was to evaluate the effect of BC emissions from mobile sources over snow albedo in Chilean Andes under real conditions, that´s why selected study location was Portillo, Los Andes, Chile, site located Central Andes Mountains, at the side of the most important border crossing road between Chile and Argentina (Route 60), presenting very high traffic density, with a large number of passenger cars and trucks travelling in both directions (4,884 average per day). This road is the only BC source of the site, making it ideal to study the effect of mobile sources BC emissions over snow under real field conditions. Using NUNATAK Refugee Laboratory it was possible to measure snow deposited BC, atmospheric particulate matter, albedo, atmospheric BC concentration, and meteorological parameters. Thanks to NUNATAK refuge laboratory design, it was allowed achieving the successful monitoring of the studied pollutants in an extreme climate zone such as the Andes Mountain for a long time in a permanent monitoring term Results obtained indicate that Portillo was an ideal location for the study because it is an isolated, yet heavily transited area, where vehicular emissions are very likely the only direct source of atmospheric BC, with a mean daily vehicles flux of 4,884. Vehicles flux was shown a strong correlation with atmospheric BC concentration (Pearson product-moment correlation coefficient (PPMCC) 0.4 with a p-value 0.001) which mean concentration was 0.5 µg m-3 for winter 2017. Vehicular traffic volume and albedo shown inverted correlated in the study period, meaning that as traffic volume increased, albedo decreased. Finally, there was a strong correlation between mean daily BC concentration and albedo, meaning as BC atmospheric concentration increase, albedo decrease. Obtained results indicate that there is a direct relation between traffic BC emissions and changes in local snow albedo. The near-immediate effect of atmospheric BC deposition on snow albedo highlights the importance of reducing BC emissions in the deceleration of global warming, thermal expansion, and glacier retrieve.