I don't think it's the lack of tracking. It's that almost all of those "3 a day" violations are only technically violations. If you try to actually charge someone in front of a jury, they're going to return something along the lines of "not guilty because the prosecutor is an idiot".

That's assuming that the judge doesn't find a way to throw it out long before it ever sees a jury. Courts don't like wasting their time on stupid stuff.