How does the author use foreshadowing in Overture to a Dance of Locomotives?

The occasion of the poem is the hustle and bustle of people, porters, and passenger trains in Pennsylvania Station in New York City. Porters yell train numbers and times, passengers rush to the correct track to get on their trains, and the trains themselves smoke and churn in the station, anxious to put their modernist muscle to work. But rather than represent this scene as chaos, Williams suggests that the landscape before the reader is an artistic landscape, and the station is a kind of museum.