Noise intrusion is likely to increase in line with population density, and yet Ireland lacks a formal national policy on noise
“The levels we are talking about when we look at noise and health are much lower than occupational noise levels and lower than levels that give effects on hearing,” says Anna Hansell, professor of environmental epidemiology at the University of Leicester.
That means moving from low-frequency broadband noise – from internal combustion engines – towards more high-pitched sounds from EVs, even where speed limits are very low, and may result in “more annoyance scenarios”. People in their 20s are far more tolerant. “Annoyance tends to peak in your 40s as you come into middle age, and as you get older and perhaps happier and more relaxed with the world, you are less concerned with noise,” she says.
Dublin Airport is probably the single most significant flashpoint, especially since the opening of its north runway last year. Excluding reports from a serial complainant, the number received from other members of the public still more than doubled from 1,296 in 2021 to 2,765 last year. But, unlike the UK, Ireland has no formal national policy on noise, says Keaney. “The Republic is crying out for a national noise policy statement. From that, we must develop guidance documents for road, rail, aircraft, entertainment, renewable energy and industry.”
Reducing noise at the source is best, rather than just muffling it, he says. “So while there are proven health impacts associated with long-term noise exposure, we must be careful how we determine that. While noise maps are a practical broad-brush approach to deciding where noise levels are likely to be highest, more work must be done to link noise maps to one’s exposure to environmental noise.”
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