加州红灯罚单490刀如何处理？

收到一封信。信上Request Court Appearance有两个选项：Arraignment和Court Trial，然后说：

To request an Arraignment date without posting bail, you may appear in person at the Clerk's office. You may also mail the "Amount Due for a Court Appearance" and select the hearing type from the two options to schedule a court appearance by mail. No other options are available and you are not eligible for a Trial by Declaration.

这是啥意思啊？