the and F service switched, with the F terminating at Second Avenue, but this was subsequently rescinded. On December 11, 1950, trains were extended to the newly opened Jamaica–179th Street on evenings, nights, and Sunday mornings. On May 13, 1951, all trains outside of rush hour were extended to 179th Street using the local tracks beyond Parsons Boulevard. On October 8, 1951, trains were extended to 179th Street at all times. During rush hours F trains skipped 169th Street running via the express tracks. At other times, the F stopped at 169th Street. In 1953, the platforms were lengthened to at 75th Avenue and Sutphin Boulevard so that F trains could run eleven-car trains. The E and F began running eleven-car trains during rush hours on September 8, 1953. The extra train car increased the total carrying capacity by 4,000 passengers. The lengthening project cost $400,000. The operation of eleven-car trains ended in 1958 because of operational difficulties. The signal blocks, especially in Manhattan, were too short to accommodate the longer trains, and the motormen had a very small margin of error to properly platform the train. It was found that operating ten-car trains allowed for two additional trains per hour to be scheduled. On October 30, 1954, the connection between the IND Culver Line and BMT Culver Line opened, with the IND taking over the elevated section. All F service began terminating at Broadway–Lafayette Street with service entering Brooklyn via the Rutgers Street Tunnel. In addition, weekend and night trains began running local between Continental Avenue and 179th Street. During middays and early evenings, trains stopped at 169th Street. On April 29, 1956, trains were extended to Second Avenue. Beginning on October 6, 1957, trains began terminating at 34th Street–Herald Square during nights and weekends. Between September 8 and November 7, 1958, two F trains ran between Forest Hills and Second Avenue, leaving Forest Hills at 8:06 and 8:21 a.m. On November 10, they were routed to Hudson Terminal, before returning to Queens in E service. On the same day, F service was cut back from Second Avenue and started terminating at Broadway–Lafayette Street to allow for construction on the Chrystie Street Connection. 1960s through 1980s Two additional F trains began running from Parsons Boulevard during the morning rush hour on April 6, 1964; these trips began entering service at 179th Street on December 21, 1964. On December 13,