"Platforms at IRT Broadway–Seventh Avenue Line stations between 103rd Street and 238th Street, including those at 191st Street, were lengthened to 514 feet (157 m) in 1948, allowing full ten-car express trains to stop at these stations. Unlike the other stations being extended on the line, the 191st Street station could already accommodate ten-car trains, but because the platforms were 480 feet (150 m) long, not all doors of the first and last cars could open at the station. On April 6, 1948, the platform extension project at 191st Street was completed." https://en.wikipedia.org/wiki/191st_Street_station#Mid-20th_century
"Platforms at IRT Broadway–Seventh Avenue Line stations between 103rd Street and 238th Street, including those at 181st Street, were lengthened to 514 feet (157 m) in 1948, allowing full ten-car express trains to stop at these stations." https://en.wikipedia.org/wiki/181st_Street_station_(IRT_Broadway%E2%80%93Seventh_Avenue_Line)#Service_changes_and_station_renovations
https://en.wikipedia.org/wiki/R110B_(New_York_City_Subway_car) 67'
lrt & subway
