Does the community response to noise change? A follow-up investigation on the impact of aircraft noise around Tan Son Nhat Airport after 11 years

A representative exposure-response relationship for aircraft noise annoyance in Vietnam was established partly based on data obtained from a social survey on community response to aircraft noise carried out around Tan Son Nhat International Airport (TIA), Vietnam's largest airport, in 2008. The question is whether the response to noise changes throughout the time and if the established relationship is suitable for the present consideration for future aircraft noise regulations. This study provided a comparison between the previous survey in 2008 and the recent investigation on noise impact conducted at the same residential areas near TIA in 2019. The average flight number increased from 200 in 2008 to more than 720 in 2019. Accordingly, the day-evening-night noise level (Lden) ranged from 53 to 71 dB and from 63 to 81 in 2008 and 2019, respectively. The percentage of highly annoyed respondents in an area of above 70 dB (Lden) was 52% in the 2008 survey, while this number only 12 percent in the 2019 survey. The residents living in the noisier environment seem to be more tolerant of noise.