You know the scenario. You're driving along and there are a moderate amount of cars on the road, but nothing too bad... then all of a sudden, traffic comes to a crawl, and stays that way for several minutes. You finally see some flashing lights up ahead, and figure there must be an accident... but soon you realize there's no accident, just one cop and one person who's been pulled over for something or other.

So of course, this begs the question - WHY do people insist on slamming on their brakes if they see someone else pulled over? For crap's sake, people, unless you're doing like double the speed limit, the cop isn't going to say "oh gee, I'll just let this guy off and chase that other person instead!" Come on now. You're more likely to draw attention to yourself by jamming on the brakes in front of a cop than if you just keep on moving.

Why isn't this stuff obvious to everyone?