Hey fellas,
What happens with the other cars when you stop your car in the middle of the street? Nothing.
What happens when you aim with your gun to someone's driving? Nothing.
What happens when the traffic lights are red? Does not modify any behaviour on the drivers either.
All of these is because, imo, "Driving AI" it's not yet implemented in the game. Also answering your question about police spawning right behind you. I think the only fix, it is to implement all those things that are not implemented yet in the game. Just being patient.
I wouldn't mind to wait a few months until the product is finished, because in my experience, the immersion of the game is being badly affected by this kind of stuff.
Due to this, all those people who was complaining about delays a few months ago, are tcomplaining today about the bugs of the game, or the unfinished state of the product.
Take care guys!