Comment by bigstrat2003

I mean, we do. The problem is that you need to be physically present to catch and deal with those people, and you can only really deal with one party (others will do their thing while a police officer is dealing with the first driver they stop). Not to mention that drivers change their behavior if they see the police around, so it's harder to catch them in the act. So for a variety of reasons it's harder to solve the human driver problem.