Well, kind of sort of. The state has 90 days to physically serve you with the ticket. This doesn't count the citation in the mail. They actually go through the expense of using a process server. They deliver a summons (if they can catch you) and you have to go to court. Not exactly a well thought out plan on the part of the state legislators as the company maintaining the cameras gets 70% of all collected fines and they don't pay any of the expenses.

Of course, that is why we have the state legislature in Phoenix so's they're all in one place and we can keep an eye on them!