No Smoking Sign - Universal Prohibition Symbol for Smoke-Free Zones #21551 (License: Personal Use)

The image displays the internationally standardized no smoking symbol: a black cigarette emitting smoke, overlaid with a bold red circle and diagonal slash. Its high-contrast design ensures immediate recognition across cultures and languages, making it ideal for regulatory signage in airports, hospitals, workplaces, and public transportation. The symbol conveys a strict prohibition without requiring text, supporting accessibility and legal enforcement.

This image is used on official signage, websites, and educational materials to indicate smoke-free zones; it matches user intent for finding regulatory symbols, compliance resources, or public health guidance.