safety warnings

A safety sign is a sign designed to warn of hazards, indicate mandatory actions or required use of personal protective equipment, prohibit actions or objects, identify the location of firefighting or safety equipment, or marking of exit routes.
In addition to being encountered in industrial facilities; safety signs are also found in public places and communities, at electrical pylons and electrical substations, cliffs, beaches, bodies of water, on motorized equipment, such as lawn mowers, and areas closed for construction or demolition.

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