What is the cross section of the transportation mode? Given the previous question, write a context that contains the answer. It can be 1 - 20 sentences. Context:
18th Street has a local subway station at the crossing with Seventh Avenue, served by the 1 2 trains on the IRT Broadway – Seventh Avenue Line. There used to be an 18th Street station on the IRT Lexington Avenue Line at the crossing with Park Avenue South.