Noise levels and social perception on bus rapid transit Mi Macro Calzada in Guadalajara, Jalisco, Mexico

Noise is a significant urban environmental stressor for public health, particularly in areas with heavy traffic. The objective of this study was to assess noise levels along the Mi Macro Calzada Bus Rapid Transit [BRT] corridor and to characterize perceptions of the environmental quality of the surrounding area. Measurements of the equivalent continuous sound level [Leq], minimum sound level [Lmin], and maximum sound level [Lmax] were taken at eight sampling points during three periods in 2019. Additionally, 385 surveys were administered. The results showed an overall average Leq of 72.17 dBA; the recorded levels are high and exceed the reference value recommended by the World Health Organization for vehicular traffic noise. However, only 4% identified noise as one of the main environmental problems. The findings highlight persistent noise exposure and the need to promote more sustainable transportation policies.