My question involves a speeding ticket from the State of: California
Submitted a discovery request to the DA of the county:
DA in their cover letter shows that no calibration is on record for the vehicle the officer used.
Officer in his statement says exactly "that the patrol vehicle was in service on September 2009 and the speedometer was factory calibrated." Citation received June 2010.
Not a CHP ticket. Sheriff Department ticket.
Citation is for 22349a - Excessive speed in a 65 zone. Cited for 80/65. Officer claims his speedometer said 82 and he paced me for a mile.
My argument at this point is that his determination of my speed based on the pace method is inadmissible since no calibration is on file according to the DA's office. I am not sure what the proper time requirements for calibration of a police vehicle are, or even if a calibration is needed by a third party calibration firm (not factory). With no reliable evidence of my speed, the officer cannot argue beyond a reasonable doubt of what my speed actually was, and therefore the citation has no merits.
Officer's statement of service has no proof (no record on file for calibration), therefore cannot be reasonably justified on.
Other than that, only thing I have to hope for is a hail mary of a no-show.
Thoughts?
Advice is much appreciated!

