Do Not Enter Sign - Knock First and Wait for Approval #96767 (License: Personal Use)

This standardized red circular prohibition sign features bold white uppercase text “DO NOT ENTER” above and below a horizontal white bar containing the instruction “Knock First And Wait For Approval.” The design follows traffic-sign conventions for immediate recognition and compliance, ensuring safety and access control in sensitive areas.

Used at entrances to private residences, secured facilities, government buildings, or industrial sites where unauthorized entry is prohibited but controlled access is permitted after verification. Matches user intent for security signage, facility management, or compliance documentation.