I like this. It probably would've been a 7 from me. I like how it fulfills the challenge. I like the sense of stillness it has even though everything is really in motion.
Maybe you should have called this "Stop"? Lots of red happening here which seems to indicate that. I would have loved to see the bus more to the right so that it appeared to be in front of the cop rather than directly behind it. That would have made this juxtapose more interesting, IMO.
You could take this anywhere. If anything, you should have taken it from the front or back to really show that he IS in the center of the road. Its too boring regardless.