Alert workers to the presence of chemicals, combustible liquids and gases, and other hazardous materials.

Designate areas that require personal protective equipment such as safety glasses and earmuffs.

Communicate dangers to workers near moving equipment that could cause injury.

Clearly define dangerous areas such as construction zones and welding areas to restrict access to only authorized personnel.

Notify workers of electrical hazards such as arc flashes, buried cable, and high-voltage equipment.

The illustrations on these signs help workers identify restricted areas at a glance.

Communicate hand signals for directing crane operation.