red warning triangle with exclamation mark: caution at construction sites

triangle exclamation danger safety construction caution alert hazard site signage awareness precaution dangersign workplace vigilance dangersymbol red triangularsign warningsign constructionsafety sitesafety safetyawareness hazardalert worksitesafety safetysign safetyequipment warningalert safetyzone exclamationmark dangerzone sitewarning constructionzone safetyprecaution warningmessage workplacehazard alertsymbol signagedesign safetyindicator warningtriangle constructionhazard safetyprotocol dangersignal alertsign constructionwarning workplacesafety hazardnotice warningemblem dangerindicator vigilancesymbol