Restricted Area Sign: Authorized Personnel Only Warning #3143 (License: Personal Use)

This rectangular sign features a bold red header with "RESTRICTED AREA" in large white uppercase letters, followed by a white lower section with "AUTHORIZED PERSONNEL ONLY" in black uppercase text. The high-contrast color scheme ensures maximum visibility and immediate recognition for safety and regulatory compliance. It is commonly deployed at industrial sites, government facilities, data centers, and other controlled environments.

Used on physical barriers (doors, fences, gates) or mounted on walls to enforce access control; matches user intent for security signage, OSHA compliance, facility management, or safety training resources.