As part of the New York City Transit Authority's proposed service plan to serve the new Archer Avenue Line upper level, the N would have been extended to Jamaica Center during weekdays. When N trains terminated at 71st Avenue or 57th Street–Seventh Avenue during weekends and evenings, G trains would have been extended to Jamaica Center, and during late nights a G train shuttle would have run between Jamaica Center and Van Wyck Boulevard. This service plan would have allowed E and F trains to remain on the Queens Boulevard mainline toward 179th Street. The final service plan, which took effect on December 11, 1988, had the extension served by E trains, with R trains extended to 179th Street.