Originally Posted by Rochard

They are trolling... They are looking for something. Maybe you were driving just a little bit too fast or crossed the white line once - stuff we do daily - giving the officer just an excuse to pull you over. They see you acting suspicious they keep digging until they find out what it is. If you've done nothing wrong they send you on your way.

I have a friend who gets pulled over a lot. He says he doesn't know why but it's obvious when you drive with him - he speeds, tailgates, and generally speaking drives like an ass. Yet he has no clue why he gets pulled over so much.