Some towns and cities are using a new combination of legal definitions in a way that makes contesting robo-issued speeding tickets nearly impossible to contend in court, which pretty clearly appears to be un-Constitutional:
Traffic camera laws are popular in part because they appeal to a law-and-order impulse. If we are going to stop those nefarious evildoers who jeopardize the health of the republic by sliding through yellow lights when no one else is around and driving through empty streets at thirty miles per hour in twenty-five zones, then we need a way around such pesky impediments as a lack of eyewitnesses.
...
In short, municipal officials and their private contractors have at their disposal the powers of both criminal and civil law and are excused from the due process duties of both criminal and civil law. It’s a neat trick that would have made King George III blush.