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Does the noise grow with the city?

Does the noise grow with the city?

Bangkok City Plan Revision is underway.

The Thai  Department of City Planning and Urban Development has announced a plan to review and revise the city plan of Bangkok to be in line with the changing conditions and environment of urban development. It was present in the last year of 2023 when new metro and sky train lines were started to be used, giving citizens not only in central Bangkok to access public transport and travel across the city. The new Bangkok city mentioned an opportunity to change the restrictions of land use for some areas. Not only expanding the density of residential zones but also allowing some new areas to be developed e.g. for commercial, while still maintaining the conservation zone for agricultural zones as well as Thai art and cultural zones. While the city seems to be growing, what else may arise along with it behind the scenes?

                News and articles are reporting cases where citizens are disturbed or annoyed by noise (Noise pollution destroying condo life). Statistics also show a trend of increasing numbers of noise complaints and becoming the first-place compliant source in 2023 (Report of complaints of the 3rd quarter, year 2023, Office of the Prime Minister). Noise pollution can be caused by many events and sources, for example, road traffic noise may be one of the major causes in a dense city like Bangkok with a population of more than 5 million people. Imagine the road keeps developing and the population grows denser, more people may be affected by noise pollution without a city noise study to plan a noise control strategy.

                City noise mapping has become a well-known tool used to study the noise exposure of the residents across the city and help governments plan new strategies for noise control, land use planning, or develop new building and housing laws. It is presented that there are noise monitoring stations located in various areas of Bangkok, some station shows that the level does exceed the recommended noise level (Online noise monitoring system from the Pollution Control Department). The monthly noise level report is also available on the PCD website (Noise Monitoring Report from the Pollution Control Department).

Sound planning and noise mapping tools nowadays can connect to the GIS database. Since the Bangkok GIS database is available, the city of Bangkok can be imported directly into the noise mapping software using modelling software such as SoundPLAN. The model can be verified to the real data from the PCD noise monitoring system across Bangkok. The software can also calculate the noise level without conducting an onsite measurement. For example, to calculate road traffic noise, the software can do the calculation using the rate of cars per hour, the mean speed, and the road surface type. Online Bangkok Risk Map (Online Bangkok Risk Map, BMA) is also a great example of using GIS and presenting various data on the Bangkok city map, allowing citizens to observe the situation in their area. It is possible to create a city noise map using a similar method to these maps.

                As it is announced that the current stage of Bangkok City Plan Revision is already underway in phase 1 of surveying and analyzing relevant data, the online website is still open for public opinion until 29 February 2024 (PLAN FOR BANGKOK). As an acoustic consultant, we hope to see people express their thoughts on noise and wish that it will be recognized as one of the topics that should be concerned for citizens’ health and well-being alongside other pollution.

References:
PLAN FOR BANGKOK:
https://plan4bangkok.com/

Report of the results of complaints/opinions for the 3rd quarter of year 2023, Office of the Prime Minister:
https://www.opm.go.th/opmportal/index.asp?parent=1232&pageid=1557&directory=13100&pagename=content1

Noise pollution destroying condo life:
https://www.bangkokpost.com/opinion/opinion/2701841/noise-pollution-destroying-condo-life

Online noise monitoring system from the Pollution Control Department:
http://noisemonitor.net/web/index.php

Noise Monitoring Report from the Pollution Control Department: http://noisemonitor.net/web/download_monthly.php

Online Bangkok Risk Map – Department of City Planning and Urban Development, BMA:
https://cpudapp.bangkok.go.th/riskbkk/index.html

by Ms. Punyakorn Sourachai