Hard Hat Required When Crane Is in Operation – Caution Sign & Decal

Post the message “HARD HAT REQUIRED WHEN CRANE IS IN OPERATION” with this caution sign or adhesive decal. ACI-002 combines a yellow CAUTION header, safety-alert symbol, and hard-hat pictogram with black lettering on a white message panel.

Choose a vinyl decal or aluminum sign

• 11-inch-wide × 5½-inch-tall laminated vinyl decal.
• 12 × 18-inch laminated vinyl decal.
• 12 × 18-inch aluminum sign.

Select the size and material you need before ordering. The vinyl options are adhesive decals; the aluminum option is a rigid sign. Other sizes are available by special order through our contact page.

A crane-operation hard-hat notice

The wording ties the posted hard-hat instruction specifically to crane operation, rather than giving only a general “Hard Hat Area” message. This is a workplace notice, not a sticker identifying a hard-hat wearer's training or qualifications.

Choose a visible posting point where people can read the notice before entering the applicable work area, following your site's placement procedures. For the adhesive version, use a suitable clean, dry surface. Check the mounting arrangement needed for the aluminum version before ordering; this listing does not specify mounting holes or included hardware.

The notice communicates a site instruction. It does not replace the site's protective-equipment procedures or certify regulatory compliance.

Created, printed, cut, and shipped in the USA.