Rather than tell you how to fight specific tickets, I will tell you how I have beat (or help friends beat) various tickets. While this may seem like a lot of information to sift through, I have edited it down significantly. I suggest that you read through as much as you can. It may not apply directly to your case, but it may give you some ideas, and it may help you or a friend on a future case.
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How I got a "hanging judge" to dismiss a ticket for 15 mph over the limit on the freeway.