My question involves a speeding ticket from the State of: California

I was cited with VC22350 in a 30MPH zone but on the citation itself, the officer states that safe for conditions at the time was 35MPH.

I've requested and looked over the city's engineering surveys and the survey state that 30MPH is the reasonable, recommended limit.

Does the officer's judgment/authority supersede posted limits or is there an argument for dismissal based upon the contradiction?

Thanks!