Abstract: A system for communicating data among networked display signs comprises a plurality of display signs communicating with each other on a mesh network. Each display sign includes: a display screen for displaying visual messages; a radio controller for communicating on the mesh network; and a controller module coupled to the display screen and the radio controller, the controller module configured to receive data from one or more other display signs communicating on the network and, in response to the data, alter the visual messages displayed on the screen.