 Buses were substituted for streetcars by the New York City Omnibus Corporation on March 6, 1936, as route number 6.That company changed its name to Fifth Avenue Coach Lines in 1956; the Manhattan and Bronx Surface Transit Operating Authority took over operations in 1962.When Broadway from 34th Street to Columbus Circle, Sixth Avenue from 34th Street to 59th Street, and Seventh Avenue from Times Square to 59th Street became one-way streets on March 10, 1957, the Broadway-Seventh Avenue route 6's northbound route was shifted to Sixth Avenue between 34th and 59th Streets.