The Dunfeng Technology Tunnel LED Access Control System automatically identifies personnel and vehicles entering and exiting the tunnel, and restricts unauthorized personnel and vehicles from entering the construction area through identity verification. Pedestrian and vehicle gates are normally in an open-close state; access is granted only after review and approval of personnel and construction managers, and timekeeping is simultaneously recorded. The LED display screen shows real-time information of personnel entering and exiting, as well as the number of team members; it can display the content of toxic and harmful gases on the tunnel face; and it shows construction announcements, progress, and welcome messages, etc.