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City planners increasingly view traffic and construction noise as a genuine public health —concernconcernedconcerningconcerns, linked to raised stress hormones and disturbed sleep. Some councils have begun installing sound-absorbing barriers along busy roads to —reducereducingreducedreduces the noise reaching nearby homes. Residents in quieter, tree-lined streets report noticeably —lowerloweredlowestlow levels of daily irritation.