Abstract:
:This study aimed to assess cyclists' exposure to noise in a medium-sized Brazilian city. Mobile sensors were used to conduct noise measurements in streets with and without dedicated cycling infrastructures. The method can be summarized in the following procedures: i) characterization of the study area; ii) data collection and validation; iii) calculation of exposure indicators; and iv) comparison and representation of the results on maps. Two strategies were adopted for the analysis, namely, spatial data aggregation and temporal data aggregation. Thus, measurements were initially organized in 1,200 nodes distributed along the paths. The results indicate that bicycle riders in São Carlos may be exposed, in some routes, to a high proportion of high noise-level segments. In the two routes selected for this study, the cyclist was exposed to noise levels above the adopted threshold (> 75dBA) in 33.2% and 18.9% of the nodes. Also, the possibility of simultaneously working with two related indicators has broadened the classification criteria of the route segments regarding noise exposure. :O objetivo deste estudo foi avaliar a exposição dos ciclistas ao ruído em uma cidade média brasileira. Um sensor móvel foi utilizado para as medições de ruído em ruas com e sem infraestruturas cicloviárias segregadas. O método proposto contempla as seguintes etapas: i) caracterização da área de estudo; ii) coleta e validação de dados; iii) cálculo dos indicadores de exposição; e iv) comparação e representação de resultados em mapas. Dois tipos de análises foram realizadas, por agregação espacial e por agregação temporal. Para isto, as medições foram inicialmente organizadas em 1.200 nós distribuídos nos percursos considerados. Os resultados apontam que os ciclistas que percorrem alguns trechos na cidade de São Carlos podem estar expostos a uma proporção considerável de ambientes com altos níveis de ruído. Nos dois trechos selecionados para este estudo, o ciclista esteve exposto à níveis acima do valor adotado (> 75dBA) em 33,2% e 18,9% dos nós. Além disso, observou-se que a possibilidade de trabalhar concomitantemente dois indicadores relacionados amplia os critérios de classificação dos trechos quanto à exposição do ruído.
journal_name
Cien Saude Coletjournal_title
Ciencia & saude coletivaauthors
Ramos TDC,Silva ANRD,Souza LCL,Dekoninck L,Botteldooren D,Teixeira IPdoi
10.1590/1413-81232020257.157522018subject
Has Abstractpub_date
2020-07-08 00:00:00pages
2891-2902issue
7eissn
1413-8123issn
1678-4561pii
S1413-81232020000702891journal_volume
25pub_type
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