Are City People Rude?
My wife likes to claim that the reason to have a map in London is not to actually read it but because as soon as you take it out a londoner will ask you where you want to go and offer to tell you how to get there. I've just returned from a couple of days in New York; the strangers I spoke to, mostly asking directions or checking that I was on the right subway train, were very helpful. The nearest thing to an exception was one crazy bag lady in the subway who yelled at me when I asked another passenger a question. Even in Paris, notorious for bad treatment of visitors, I found no evidence to confirm the reputation.