Jury trial, judge trial, what is the difference?

正在研究怎么上法庭去免除那张交通罚单，一上来就碰到这个问题。
jury trial or judge trial按题意， jury trial 应该是陪审团（也就是普通百姓）说了算， judge trial应该是法官说了算。 但听到现在， 好象上交通法庭的都是法官说了算的啊，没听说过陪审团啊。
要说让我选的话， 我会选jury trial， 我觉得陪审员更会向着人民， 法官就难说了，只能碰运气了。

我现在想证明那位警察执法时根本就是心不在焉，地点都写错，罚单应该无效，他说的我在校区内超速是他弄错了，我在校区内没有超速， 他测的速度已经在校去外，他是在校区外250 Feet外测速，拦下我的。

这样子，好象该选jury trial。 谁有这样的经验？

下面转自Houston法院网页：
How do I contest my ticket?

You have a right to a jury trial, unless you give up that right and request a judge trial. By setting your case for trial, you are giving up your right to require that your case be dismissed through a mandatory Driving Safety Course. If you wish to receive a trial, please fill out the Plea of Not Guilty Form and bring to one of our six locations or mail it to:

City of Houston Municipal Courts
PO Box 4996
Houston, Texas 77210-4996

Be sure to submit your request for trial on or before your initial arraignment date to avoid the issuance of a warrant for failure to resolve your court business.

Once your request is received and processed, you will be notified by mail of your new court date, time, and location.
If at any time, you would like to find out information on your case(s), please dial 713-837-0311 for assistance.