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Fire Research Notes


Emson, I.C., Hird, D. and Pickard, R.W., 1960. AUDIBLE WARNINGS FOR FIRE APPLIANCES. Fire Research Notes 440


An investigation has been made at the relative effectiveness of four typical audible warning devices which may be used on fire appliances. It has been shown that the threshold levels of audibility of the devices against a background of lorry noise are not significantly different, so that the loudest warning noise will be the best for being heard by the driver of another vehicle. On this basis the warnings have been put in an order of effectiveness.

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