The move is intended as a money maker for a state facing a $19 billion deficit. The device would mimic a standard license plate when a vehicle is in motion. But it would switch to digital ads or other messages when it is stopped more than four seconds, whether in traffic or at a red light.
The license plate number would remain visible at all times in some section of the screen. In emergencies, the plates could be used to broadcast AMBER Alerts or traffic information.