Abstract: A modular display system for a vehicle is disclosed. The system includes a plurality of display units that may be arranged along an exterior of the vehicle in different orientations. The system offers a modular, scalable, accessible, and simplified approach to exterior displays for automated and other types of vehicles. The displays, being modular, are not tied to the specific mounting location on the vehicle's exterior. The image data for each display is rotated based on the orientation of the display as installed which is identified by reference to the distinct pin connections of each display's control port.