Abstract: A system of advertising information on one or more mobile vehicles as a function of the vehicle's location. The system comprises mobile units and a central system for controlling the displays on the mobile units. The mobile units include displays visible from the outside of the vehicle, a controller, and a wireless communication system for repeatedly transmitting a locator signal to and receiving display-selection messages from the central system. The central system includes a wireless communication system for receiving locator signals from the mobile units, a memory and a processor. The central system determines a zone in which the mobile unit is located, selects a display to be shown by the mobile unit based on the zone that the mobile unit is located, and transmits a display-selection message to the mobile unit identifying a selected display message to be shown on the mobile unit's display.

Abstract: A system shows messages on electronic displays, including networks of outdoor displays, such as displays mounted on vehicles. With such vehicle displays, a display's current geographical location can be sensed, such as by a GPS receiver in the vehicle or by multiple wireless receivers separate from the vehicle. The sensed location can then be used to select which messages are shown the display. Different values can be associated with showing messages on displays at different locations and times, and values associated with the locations and time through which a display travels can be summed, such as for charging advertisers or crediting vehicle operators. The system can be controlled by a computer system, such as an e-commerce site, which allows advertisers to upload message content, select messages, and select the time and place at which a messages is to be shown, either directly or by specifying criteria for the system to select such times and places.