Poetry found an audience on the subways and buses of New York through the "Poetry in Motion" program. Short poems are displayed on the placards that you usually see advertising such things as on-line degree programs or newly released films. The poets featured range from William Shakespeare to subway poem competition winners.
A book was produced a few years after the program's start in 1992, Poetry in Motion: 100 Poems from the Subways and Buses (W.W. Norton, 1996), it contains the first one hundred poems that were promoted. Check your local public library for a copy.
Here's a video called "Poetry in Motion" that shows us subway poetry of another kind:
Check out this week's Poetry Friday Round-Up at Crossover.