Abstract
This paper presents the methods and results of a simplified traffic noise survey for the city of Porto Alegre, the southmost capital city in Brazil. Noise measurement data and hourly vehicle flow data were used. Both were obtained at 6 p.m. Values from 560 sites were considered, making possible the construction of a simplified traffic noise map, built upon Leq values. The work, which tries to identify, for the stated time, the impact of noise on the population, in terms of the magnitude of the population exposed to different noise levels, has shown that 90% of the population included in the sample is exposed to A-weighted noise levels exceeding 65 dB.
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