34c57e0d-1bf8-4c55-ab18-316fe2909e8320210115125255984wseamdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT1790-507910.37394/232015http://wseas.org/wseas/cms.action?id=4031212202021220201610.37394/232015.2020.16http://wseas.org/wseas/cms.action?id=23189Luís A. P. J.GonçalvesDepartment of Civil Engineering, University of Minho, Guimarães, PORTUGALPaulo J. G.RibeiroDepartment of Civil Engineering, University of Minho, Guimarães, PORTUGALThe high traffic volume is the main source of the congestion in cities, which is a big problem on transportation systems. This congestion is the main cause of the increase in the level of noise and air pollution in urban centers what directly affects the quality of life of the population. Also, contributing to the big number of vehicle conflicts that affects the performance of the transportation systems and the quality of life of the population. These problems are the result of the high volumes of the through traffic. 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