In this paper we will present the development of road noise map in the downtown of Medellin City through the implementation of predictive software. For the construction of noise mapping, the results obtained using the calculation’s French method (NMPB) and German method (RLS 90) were compared. The prediction process was carried out using two different softwares (SOUNDPLAN and CADNAA) for the purpose of analyzing the differences in the programs and the resulting levels. Finally, noise measurements were made in order to validate the prediction.