The setting of this study is the city of Curitiba, whose Structural Road Systemic ternary, comprising: a central bus lane flanked on each side by a lane for ordinary vehicle traffic. Curitiba's main Structural Sectors (traffic hubs) are: South, East and West (see Fig. 1). The purpose of this study is to evaluate environmental noise on stretches of road in the city's main traffic hubs, basewoman sit measurements and the calculation of acoustic maps. Because the hubs are quite extensive, stretches of road varying from 2.4 to 3.5 km were chosen, which are depicted in Fig. 2.