I have never personally known anyone ticketed, but have heard stories. It seems the hot-spot is the I-10 between the AZ border, up to a few miles past Blythe. Evidently (as the story goes), that particular piece of road was funded locally, not federally, and tickets issued there go into local coffers.
If you are concerned either disconnect and drive through this part without a tow, or head over to I-40 or I-8 instead.
Again, I've never had a problem, and I would doubt if you travel near the towing speed limit (55 in CA), that you would not be hassled.
Ray