Suburbanisation is one of the most significanturban development trends in Europe andeven the world today. It affects not only largecities and metropolises, but also smallerurban areas. Among its many environmentalimpacts, the most notable is the increase intraffic, which not only leads to morecongestion and accidents, but also to asignificant increase in emissions of pollutantsfrom transport in peri-urban areas. It is truethat the scale of suburbanisation in smalleragglomerations is much smaller than inmetropolitan areas, but the populationmoving out of the cities is making greater useof private transport for commuting. UsingCOPERT (COmputer Programme tocalculate Emissions from Road Transport)software developed in collaboration with theEuropean Environment Agency (EEA), theJoint Research Centre (JRC), Aristotle Universityof Thessaloniki and EMISIA SA, theauthors estimated how emissions from a roadconnecting a group of settlements in the Szigetközregion (the Dunaszeg-Győrújfalusection of road 1401) in the vicinity of Győrchanged between 1995 and 2018. Thesesettlements are among the fastest growingsuburban villages in Hungary, and previousempirical studies have shown that theincrease in the number of vehicles can be linkedto the increase in the number of peoplemoving out of the city. As a result, thecomposition and nature of traffic-based airpollution near the city is changing rapidly