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On urban noise
We open February with an article share. The article is about noise in urban areas. Not surprisingly, most noise comes from transportation and the solutions mentioned in the article not only addresses transportation noise but at the same time addresses other concerns about transportation, including safety.
Durand-Wood, E. (January 25, 2024) “Why Are Cities So Noisy? And Can We Do Anything About It?“ Strong Towns, https://www.strongtowns.org/journal/2024/1/25/why-are-cities-so-noisy-and-can-we-do-anything-about-it [Last accessed: 2/2/2024]
To quote from the article:
“In 2011, the WHO set recommendations for daytime and nighttime environmental noise levels, and found the maximum safe noise level for daytime is 55db (somewhere between moderate rain and normal conversation) and at night, 40db (about the level of a quiet library). Beyond these levels, prolonged exposure to environmental noise has been shown to cause health problems, and not just hearing-related ones.”In 2011, the WHO set recommendations for daytime and nighttime environmental noise levels, and found the maximum safe noise level for daytime is 55db (somewhere between moderate rain and normal conversation) and at night, 40db (about the level of a quiet library). Beyond these levels, prolonged exposure to environmental noise has been shown to cause health problems, and not just hearing-related ones.
Until recently, most analysis related to urban noise has focused on noise as an annoyance or disruptor to humans. But with these new guidelines, there was an acknowledgement that too much environmental noise can actually have grave health consequences, noting that “at least one million healthy life years are lost every year from traffic-related noise in the western part of Europe.”
We now know that higher levels of environmental noise raise heart rate and blood pressure, cause harmful sleep interruptions, and are linked to cardiovascular disease, dementia, and cognitive impairment in children, among others. And as with environmental pollution, there are racial and socioeconomic disparities with noise pollution.
In a 2022 report, the United Nations identified urban noise pollution as a top environmental risk.”
Have you noticed how noisy it is in our cities? Many actually choose to live in the suburbs as the perception is its quieter especially during the night. The health risks due to noise are well-established as presented also in the article. However, there are ways to address this and reduce the noise, particularly the type attributed to transportation and traffic.
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On one’s exposure to noise
Here is another article on noise, relating about how it affects our health (e.g., “noise can damage your heart as well as your hearing”). The article also includes reference to an app developed by the US National Institute for Occupational Safety and Health (NIOSH) – a sound level meter iOS app that utilizes sound energy, and has its accuracy verified in an acoustics lab.
To quote from the article something related to transport and traffic:
“As a general rule of thumb, the World Health Organization considers average road traffic noise levels above 53 decibels and average aircraft noise levels above 45 dB to be associated with adverse health outcomes, though their metrics are weighted slightly differently than the average on your screen.
Nighttime noise is considered particularly harmful because it can fragment your sleep and prompt a stress response, even if you don’t remember waking up. The W.H.O. has long recommended less than 30 dB of nighttime noise inside your bedroom for high-quality sleep.”
We tend to dismiss or take for granted the noise from transport and traffic. While it seems that it does not have an effect on our health and well-being, it will eventually catch up with us and cost us health-wise. I have downloaded and installed the NIOSH app on my phone and occasionally monitor the noise around me whether I am at home or at the office. It can get pretty loud during my commutes and I drive so am curious how loud it can be for those taking public transportation. I have experienced riding in jeepneys blaring loud music. A daily dose of that for long periods each way of the commute will surely affect one’s hearing and overall health. Exposure, after all, isn’t just about the intensity of the noise but how long you experience or endure it.
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On noise and how it affects your health
I am sharing this article on noise that was recently published in The New York Times:
Baumgaertner, E., et al (June 9, 2023) “Noise Could Take Years Off Your Life. Here’s How,” The New York Times, https://www.nytimes.com/interactive/2023/06/09/health/noise-exposure-health-impacts.html?smid=url-share [Last accessed: 6/13/2023]
To quote from the article:
“European countries have far outpaced the rest of the world in regulating noise. The European Union requires member nations to monitor and assess sound levels across regions and to produce new action plans every five years to address communities at greatest risk. The E.U. now mandates quiet brake locks on rail freight fleets and noise labels on outdoor power equipment; it also requires noise reduction in car manufacturing and mitigation efforts at airports.
Individual cities and countries have taken additional measures. Paris has installed noise cameras that measure the sound level of vehicles and fine drivers who exceed them. Berlin has used new bike lanes to reduce the flow of engine-powered vehicles and move the source of the noise to the center of the road, away from houses. Switzerland has introduced national “quiet hours” — overnight, one midday hour on weekdays, and all day on Sundays.
While scientists say it’s too soon to make a prediction about the effects of these policies on cardiovascular health, several European countries have reported tens of thousands fewer residents exposed to major sources of noise.
Like many health issues, protection against noise would be economically advantageous. Economists who analyzed health care spending and productivity loss because of heart disease and hypertension have argued that a 5 dB reduction in U.S. noise could result in an annual benefit of $3.9 billion.”
Not everyone is aware of how noise may affect our health. Most of us are exposed to noise of different levels and lengths of time (i.e., duration). We probably take for granted, for example, the noises we hear during our commutes or perhaps the noises in our workplaces. These actually take a toll not just on our hearing (e.g., long time factory workers likely have hearing problems after they retire) but other aspects of our health as well. Long commutes inside jeepneys blaring music can do damage to your health. Noise from busy streets will cause damage to the health of those residing along these streets. Are we doing anything to mitigate such noise in the Philippines?
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Noise, air pollution and your health
Here is another quick share of an article relating transportation and health:
Hunter, M. (March 27, 2023) “Road Noise Might Be One Reason Why Your Blood Pressure is High,” Medium.com, https://medium.com/beingwell/road-noise-might-be-one-reason-your-blood-pressure-is-high-5f6c7bd69ad8 [Last accessed: 3/29/2023]
To quote from the article:
“After a median of 8.1 years, the researchers discovered a dose-response relationship: The higher the noise exposure, the greater the risk of having a diagnosis of hypertension.
For every 10 decibel increase (in average 24-hour road traffic noise level), there was a 1.07 times rise in the chances of having high blood pressure. The researchers adjusted the data for fine particles (PM2.5) and nitrogen dioxide (NO2) exposure.
Exposure to air pollution and traffic noise exposure led to the highest high blood pressure risk.”
Both air pollution and noise are mentioned as issues to be addressed by implementing programs for sustainable transport. Sustainable transport includes low carbon transport as well as the reduction of noise generated by traffic.
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Caught (up) in traffic 