I am a member of the State Bar of California, the Bar of the U.S. District Court for the Central District of California (San Luis Obispo, Santa Barbara, Ventura, Los Angeles, Orange, San Bernardino, Riverside Counties), and I have considerable experience with both photo-radar moving citations and trials by declaration.
With a trial by declaration, the officer is required to write a counter declaration in response to your declaration. The judge reviews both declaration, and reviews the photo-radar evidence (the photograph), and unless you deny that you are the driver of the vehicle, then you will be found guilty.
It's cut and dry, because the judge has sole discretion to make a decision about your guilt or innocence.
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