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.
Most trials in the US never go to jury, right? The risk of receiving a crushing sentence is just too big, so almost everyone accepts a plea bargain.
Notoriously, Hans Reiser (who is guilty, never doubted that) refused a rather low plea bargain of IDK six? years, tried his luck with a jury trial, and got life.
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.