Cops in NY and some other states don't even need radar. They go to training classes and then can perform what'* called a speed estimation.
They can literally stop you based on their observation of your speed, and their "training" and give you a ticket solely based on their "guesstimate".
And yes, it holds up in court.
I have friends that have gotten in big trouble, and paid huge fines based on what supposedly was a speed estimation, with no radar unit to back it up.
How you like them apples?
And nowhere in NY law anyway, are they required to show you the radar. I asked nicely, and was told I didn't have any right to see it. Almost landed me a reckless driving charge.
And yeah, I live in a one traffic light town, that has part time officers, but has a Hemi Charger, an Expedition, 2 9C1s, and a K9 unit. Oh, and they just installed plate reading and capturing software/hardware on all the units.
NY is one of the most police happy states I've ever seen. Even in the middle of nowhere.
So, your laws may (and probably do) vary.

I hear you on the "Cop Happy"... But the timers can be beaten in court LOL.

I stand corrected, the US supreme Court has said they do not !!

but Calibration dates for the radar must be present in court. and written on the ticket.

Fight it !!

But isnt it the officer'* word over yours? So if Iasked to see my speed displayed, couldnt he say i have noright like what silver said up there?

Yes the US Supreme court has said they do not Have to show you !! But the officer has to include the calibration date on the ticket and or provide that information in court at the time of a hearing.

If I were to have had a 00+ bonneville could i have blamed my speed on the mph/kph button that I've seen in them? "Officer I thought i was going 55 but I guess it was set to kph"