Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The R44 is a New York City Transit car model that debuted in 1971 and currently operates on the Staten Island Railway. The R44 was the first 75-foot (22.86 m) car for the New York City Subway. It was introduced for IND and BMT service because it was thought that a train of eight 75-foot (23 m) cars would be more efficient than ten 60-foot (18.29 m) cars. Even with an overall increase in length, the R44s had only eight sets of doors per car like other BMT/IND cars. As a result, eight 75-foot (23 m) car trains have only 64 (32 per side) sets whereas ten 60-foot (18 m) car trains have 80 sets (40 per side). To be sure that the system could accommodate 75-foot (23 m) cars, two retired R1 cars (numbered 165 and 192; renumbered XC675 and XC575 respectively) were cut in half, lengthened to 75 feet (23 m) and sent to various places around the subway and the Staten Island Railway.

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