When you say physical, which sense does it most interact with?
Is he actually at the train station?
Why doesn't he get on the train?
Did he ever intend to in the first place, or is he there for another reason, such as picking somebody up?
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)