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By Suntydt 06/06/2010
It varies by state and county depending a little bit on when their budgets could afford the change either with new lights or new cars.
By Joan 06/06/2010
In SD they have been using blue lights for several years. I haven't paid much attention, I don't see that many police cars, with their lights on, but it seems like there are red and blue ones on the same car.
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