Your court appearance tomorrow, and based on what you posted is NOT your trial. It is your arraignment. During the arraignment, the judge will call your case, read you the charge (the violation you were cited for), ask you for a plea (“Guilty”, “No Contest” or “Not Guilty”). If you plead “Guilty” or “No contest”, he/she will simply order you to pay the fine. If, on the other hand, you plead “Not Guilty”, he will set a trial date when you can return to argue your case. In other words, you're not going to be allowed to present your case, read your declaration or submit it in written form. That comes later.
Unfortunately, a speed trap argument is NOT going to get you a dismissal of a red light violation.
Short answer: You are not charged with speeding. You are being charged with crossing the limit line while the light is red.
The element of the offense that must be met by the prosecution in a red light violation is “proving that you crossed the limit line while the light was in its red phase”. And yes, although your speed may have been mentioned on the picture or the video, the violation itself is not predicated on how fast you were traveling, nor was any of the evidence based on a speed measurement. Speed, is irrelevant in this case.
Furthermore, CVC section 40803 (et seq) forbid the prosecution from introducing evidence -in a speeding case- if the conditions in 40802(a) existed. The prosecution can (and most likely will) prove that the alleged violation (you crossing the limit line while the light was red) did occur -by presenting pictures and/or video- showing your actions (or lack thereof) at the time.
40803. (a) No evidence as to the speed of a vehicle upon a highway shall be admitted in any court upon the trial of any person in any prosecution under this code upon a charge involving the speed of a vehicle when the evidence is based upon or obtained from or by the maintenance or use of a speedtrap.
(b) In any prosecution under this code of a charge involving the speed of a vehicle, where enforcement involves the use of radar or other electronic devices which measure the speed of moving objects, the prosecution shall establish, as part of its prima facie case, that the evidence or testimony presented is not based upon a speedtrap as defined in paragraph (2) of subdivision (a) of Section 40802.
So while your argument may result in the ”speed evidence” that is on the citation being ruled as inadmissible, it still leaves you with having to argue against other evidence -you crossing the line while the light is red- which IS admissible... That little bit of evidence (a video showing you crossing the line while the light is red) is more than sufficient to establish that the alleged violation did in fact occur.
That is not such an accurate description of how the system works. The sensors, and while they do activate the system camera to snap a picture/start a video recording, are not intended to measure your speed per se. They are intended to establish your position relative to the limit line so as to establish that you failed to stop. Not to establish that you were speeding. Again, the element of the offense is “crossing the line” not “how fast you were traveling when you crossed it”.
Again, if the officer were to testify to any of that info, you're free to make a timely objection that such evidence should be inadmissible. That still leaves them with a picture that established that you crossed the line while the light is red and therefore, the violation did occur.
Same points as I stated above...
Re-read the portion I underlined... specifically, the bolded part: “...render a judgment of conviction... involving the speed of a vehicle...”. This is NOT a case of a speeding vehicle...