I am trying to find proof that sirens are ineffective. The vast majority of the material I have found on Google seems to point to “a Department of Transportation study” into sirens. But this elusive study was done in 1977.
Do you think this study is still valid? :dubious:
Has the technology for siren sound changed so that they now cover a larger distance?
I know they would have optimised the technology to use less power, work for longer without needing maintenance etc. But what I am looking for is the sound specifically. If the siren sound is still basically doing the same thing, same decibels, reaching the same distance etc. then this study would still be relevant right?
Thanks to Cecil for this very informative column that almost answered my question, but not quite: