Knowing the law and following the law is more trivial than you think then. If signing a paper to get a permit to drive concludes that you KNOW the law, then nobody, including police, should have a permit. Laws change by the day, and as you can see by all the research I have been doing, it it NOT stated clearly for us to find. Makes you wonder just how many of the DMV manuals are actually up to date even.

I was just about to put an catback on my WRX, that is even approved by Subaru, but this whole ordeal is making me think twice.

And I agree, it is the responsibility to know the laws, but, if the administration is unable to provide literature, or a means for us to keep up to code, I do not think we can be held responsible.