R42 (New York City Subway car)

The R42 is a New York City Subway car model built between 1969 and 1970 by the St. Louis Car Company in St. Louis, Missouri, serving the B Division (IND/BMT). This fleet was the first to be fully equipped with Stone Safety 10 ton air conditioning systems/units similarly found on the last ten (10) R38 and R40A cars. The R42 fleet is numbered 4550-4949. It was the last B Division car built for the New York City Subway until the R143 in 2001, and the last car model class to be built in married pairs.