Wow! That virtually means there is no defense to speeding tickets. With all due respect LEO’s can testify any time that they thought the guy was speeding and its a done deal. The lone exception would be a cross examination which significantly undermines the officer’s credibility, but that’s not so easy to do.
Lucky for you and me they have no time to trump up speeding cases because there are so many real speeders the cops can't even eat a full dough nut between chasing after another.
Being wrongly accused is a civics lesson you will never forget. Once you have, you not think cops spend time lying setting someone up, throwing away their pride,integrity,and guts(why we call them P.I.G.) to get a speeding ticket fine into the coffer. If they falsify a case against you it will be something heavy like homicide or a pot seed in your sock.