Yeah, it's odd that you're the only native English speaker to have answered my question on this forum. It cannot be a BrE thing because -first, Brown's American and second, that announcement (according to the book) was made on Washington's subway. Are there many British people on Washington's subway? I don't think so..... I agree that if a phrase is common and often heard at railways it doesn't mean it's grammatically correct.
I read "The Da Vince Code". Well, the book's pretty interesting but there are a load of facts to be checked. Some things that occur to Langdon and the French girl (can't recall her name now) seem unreal!
I've read about half of "Deception Point" so far. Again, there are a lot of things that are very, very odd! Still, it's a pretty good read. Furthermore, there are tons of good expressions and new words that might come in handy one day.
Мда....мне ОЧЕНЬ понравилось то, что ты написал на русском! МОЛОДЕЦ. I applaud you!