>
>That said, there is no doubt that the machines DO work most of the time
>very well.


My local department bought a few of those K band speed boards that display 
your speed..

I decided to do some testing.

The target is a 1998 ford expedition, it certainly shouldn't have any 
trouble seeing that, especially on such a long straight road, with no other 
plausible targets in sight.

I just waited till a nice quiet time of night, and made speed runs 
calibrating against my GPS.  At 40 MPH nominal, my displayed speed was 
about 10 miles off, in both directions sometimes, and most times was at 
least 3-5 miles off.

GPS guarantees 1MPH accuracy.

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