3 Armored Security trucks have been called in to transport the safe, this has to be a high-class security company doing the job, and Ed Norton even gets his own chopper. Then one of their trucks get attacked, and 2 motorcycles of the company injured. Why the hell didn't they alarm the police?
The way I see it, as you explained, it was a high-class security company that was escorting Steve and his gold. Considering that Steve paid a pretty penny for the services (deducting the fact that there was 35 million in gold at the beginning of the movie and only 27 million left by the time they high jacked the armoured car --- he spend about 8 million on his house, toys and of course the security service). Given that this was a "movie" and taking this into consideration plus the fact that Steve was "the bad guy" (he is the villian in this movie), why on Earth would they call the cops when the armoured car was jacked? LOL. You know what I'm saying? They're the bad guys! It would be like those Ukranian's bad guys at the beginning of the movie calling the polize in Italy because their gold got heisted by Charlie, Bridger and crew. I'm sure it wasn't the Ukranian's gold in the first place; They stole it from someone else.
So no. The bad guys wouldn't call the cops when their stolen gold got jacked. Steve would have way too much to explain to the cops on how he aquired 27 million in gold bricks. BTW, I won't get into details on why police helicopters or police weren't notified when pretty much everyone in downtown LA seen an irradict black helicopter flying below FAA flight regulations in the city of Los Angeles, or 3 Mini Coopers driving in the Metro Rail station; All rail stations have cops nearby, especially subways system, and especially after 9/11. This stuff is where we have to suspend disbelief.
_ Every person that served can be called a veteran, but not every veteran can be called a Marine.
The way I see it is ... it's a Hollywood Heist Blockbuster, a category of movie which regularly tosses logic and realism off the moving train/bus/truck/minicooper/helicopter.
If you want a heist movie that stays within a narrower range of reasonable plotting, see a Guy Ritchie heist movie - they are quite good.
"All rail stations have cops nearby, especially subways system, and especially after 9/11. This stuff is where we have to suspend disbelief."
I guess you don't live in LA, Big Rich. Or, if you do, you don't ride the rails. Believe this: LA's subway stations don't have cops/security hanging around. That's because they use the honor system. There are no turnstiles, no cops, just people going where they need to go. Occasionally a subway employee will do a random check, but it's not every person on the train.
As for the helicopter business, okay. That would've caused the real LAPD to scramble a few choppers. But the movie's plot doesn't require the intervention of the police, so they just didn't worry about it.