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Originally Posted by InDShadow
Just heard police in SC are now using GPS in their vehicles to issue tickets. How is this possible? doesn't GPS track their speed and not yours unless its in YOUR vehicle?
sure sounds wierd to me.
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From what I have learned from acctually getting tickets, they are probably using the GPS units to pace you rather than directy predict your speed. They get behind you and keep a "constant" distance. Determine your speed based on how fast they are having to travel to keep the "constant" distance.
Don't know why they would use GPS, I know here all police cruiser's speedos are calibrated every so often. I guess the GPS unit might keep them from having to go through the process of having the cars calibrated???