
Quoting
donzoh1
I believe visual estimate alone can be used to support a speeding violation. You don't deny speeding in your post so I'm guessing you were.
If you're just trying to avoid a conviction here, TBD is a good first step, followed by Trial de Novo. You essentially require the officer to prove the case twice. If they either don't respond at TBD or don't show up at TDN, you win, assuming you don't make any stupid admissions (like accepting responsibility for your illegal driving habit). You can go even further by disqualifying any and all temporary judges and then disqualifying the first real judge or commissioner you appear before using a PC 170.6 challenge, assuming the officer shows up. Anytime you do, it's possible that you'll delay the trial until another day or to a time when the officer can't be there. This tactic is particularly useful late in the court day as it's less likely that the case can be moved to another court that same day.