Prohibition Symbol - Universal No Entry or Forbidden Sign #317370 (License: Personal Use)

This image displays a classic prohibition symbol: a bold red circle enclosing a red diagonal cross (X), set against a white background. The design follows ISO 3864-1 standards for safety signage, ensuring immediate visual recognition across cultures and languages. It is commonly used to denote forbidden activities, restricted zones, or hazardous conditions.

Used on safety signage, web interfaces, mobile apps, and instructional materials to communicate “not allowed” or “prohibited.” Matches user intent for understanding restrictions, compliance, or hazard avoidance.