| The R10 was the first series of post-war New York City Subway cars. They were built by the American Car and Foundry Company from 1948 to 1949. For the first time, the car body was of an all-welded low-alloy high tensile (LAHT) steel construction. They first ran on the A on November 20, 1948. They were initially the mainstay, and were exclusively assigned to this train, where they remained for almost 30 years, and became synonymous with that route for more than 20 years. |