I have autism and loud noises aren't just a botherance to me, it's painful and leave me in a vulnerable depressed state, often unable to speak for quite some time, this is a sensory overload. I understand why they are necessary, I just don't believe they need to be this loud.
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Exposure to sounds at or above 85 decibels (approximately the level of a vacuum cleaner) can cause hearing loss. - hearsmart.org
The dB is a logarithmic unit based on base 10 meaning a sound at 50 dB is noticeably twice as loud as 40dB
This means a sound of 125dB is noticeably 16 times louder than 85dB(the noise level which hearing damage can start)
If sirens were limited to 95dB it would have much less of a negative effect on the public yet still be just as effective as clearing the road