The court costs were higher than the fines, and jail is for those that are unable to pay. I thought court costs were paid with taxes.
DId you ever get a traffic citation for a moving violation? You’re given the option (usually) of pleading guilty and paying the fine before the trial date, OR going to court to fight it. If you choose the latter, even if you win vs. the ticket, you will pay court costs. It’s a no win proposition.,