[2] Between 1914 and 1916 construction was undertaken to install a third track to provide express service on the line during peak hours.

From there it ran above Park Row to Chatham Square, where it had a junction with the Third Avenue El, then continued east above Division Street.

[6] As of 1934 Second Avenue service operated as follows:[citation needed] On April 23, 1939 express service was inaugurated weekday and Saturday daytime in Queens between Queensboro Plaza and 111th Street, and elevated trains were cut back to 111th Street.

On September 8, 1939 Astoria trains were rerouted in the weekday PM peak to City Hall.

[2][7] Evening and Sunday Queens trains were extended to City Hall or South Ferry.