at the very least in my state (Illinois), it's not lawful for public bodies to disclose the license plate numbers read from ALPR cameras, so this data set is necessarily incomplete
It's not a dataset of license plate numbers read from ALPR cameras. It's a dataset of license plate numbers that have been entered into search tools.
Enter a license plate to see if it's one of the 2,207,426 plates seen in the 27,177,268 Flock searches we know about.
I commented before realizing that someone else already made the same point earlier, and you already explained that the law covers more than what you mentioned in your first comment.
