The electronic display
system displays advertisements, traffic and weather information on a display panel mounted to the
license plate support of an automobile or any vehicle when the vehicle is moving beneath a predetermined threshold speed. The display can be mounted elsewhere, for example, anywhere on the rear or sides of a larger vehicle such as a van,
bus or
truck, where it will be readily seen. Once the vehicle exceeds the predetermined threshold speed, the display changes, showing vehicle
license plate information, such as the
license plate number, State of registration, etc. The electronic display
system includes a programmable electronic display, driven by a
display driver, and an electronic control module that allows information to be sent to and shown on the electronic display. The electronic control module is coupled to a
speedometer, a
tachometer, or a sensor that determines the rate at which the
drive shaft rotates, which allows the control module to determine whether the threshold speed has been reached.