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A blue circle with a white figure wearing ear defenders.
Also known as: Hearing protection mandatory, Wear ear defenders, Ear protection sign, Blue circle with ear muffs
The ear protection sign is mandatory rather than advisory, and where it appears the exposure has usually been measured — hearing protection zones are defined by measured noise level, so the sign marks a boundary someone established with an instrument.
Requires hearing protection to be worn in the marked area.
Contexts: Public information
Marks a boundary normally established by measurement, since hearing protection zones are defined by measured noise exposure rather than by judgement.
Contexts: Public information
Is a blue mandatory-action sign, sharing its form with the other personal protective equipment signs.
Contexts: Public information
A white head seen from the front wearing a headband with a cup over each ear, on a solid blue circle.