The photos that came with the ticket usually show your speed approaching the intersection, how long the light was yellow, and your speed on the other side. The DA has that information, and if you go in to court
to talk to him about the ticket, he'll be able to show it to you. If for some reason they don't have it, then you can ask them to dismiss the ticket because they won't be able to prove you ran the red light. You could also try sending a letter asking them to provide it, if you've already returned home and aren't in California.
Usually, when traffic school is available, it's the best option to avoid points on your driver's license. But that doesn't help if you're licensed in Louisiana - traffic school doesn't transfer. So the options are to dispute the ticket and try to get it dismissed or pay it. Red light tickets are one of the few where the district attorney usually is not willing to lower the fine (you can go in and ask - but it wasn't allowed when I worked for the DA in traffic court years ago).
The way these red light tickets work, two officers review them and decide whether to issue the ticket. They take their vacation at different times to ensure that one of them is always available to go to court. So, if you want to fight it, keep in mind that the officer will probably be there.
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