The R11 was a prototype subway car built in 1949 by Budd. Originally, there were to be 400 R11 cars built. However, with the cancellation of the Second Avenue Subway, only ten were manufactured. Several features of the R11 were incorporated in future subway car orders. The R11 also has the distinction of being the first stainless steel R-type subway car to be built. The R11s were overhauled under the R34 contract in 1964 and 1965 and were ultimately retired in 1977. One car has been preserved by the New York Transit Museum.