Danger Private Property Sign - Knock Before Entering Warning #3506172 (License: Personal Use)

The sign features a bold red oval with “DANGER” in white uppercase letters at the top, followed by “PRIVATE” in large black font, and the instruction “PLEASE KNOCK BEFORE ENTERING” below in smaller black text. It uses high-contrast colors (red, black, white) for maximum visibility and compliance with safety signage standards.

Commonly used at entrances to private residences, commercial back areas, restricted zones, or industrial facilities to deter unauthorized entry while fulfilling legal notice requirements. Matches user intent for security signage, property protection, or OSHA/ANSI-compliant warnings.