Prohibition Symbol - Universal “No” Sign for Safety and Compliance #181866 (License: Personal Use)

This high-contrast symbol features a thick red circle intersected by a diagonal red line, set against a black background for maximum visibility. It is standardized under ISO 7010 as the universal “prohibited” sign, conveying immediate visual warning without language dependence. Commonly applied in traffic control, workplace safety, digital interfaces, and public signage to prevent hazardous or unauthorized behavior.

Used in regulatory signage, safety manuals, web UIs (e.g., disabled buttons), and instructional materials where clear, language-neutral restriction messaging is required. Matches user intent for understanding prohibitions, compliance guidance, or designing accessible interfaces.