and 3:30 p.m. The change in the plan was the operation of some E trains from 179th Street as expresses during the morning rush hour to provide an appropriate level of E service to Archer Avenue during the morning rush, to maintain the same level of service to 179th Street while providing express service, and to provide greater choice for riders at the Parsons Boulevard and 179th Street stations on Hillside Avenue. It was decided not to divert some E trains to 179th Street during the afternoon rush hour so that Queens-bound riders would not be confused about where their E train was headed. It was decided to serve Archer with the E as opposed to the F to minimize disruption to passengers who continued to use Hillside Avenue, to maximize Jamaica Avenue ridership and the length of the peak ridership period, which is longer on the F. The NYCTA had found that most riders using buses diverted to Archer used the E, while passengers on buses to 179th used the F. Having E trains run local between Continental Avenue and Van Wyck Boulevard was dismissed in order to provide 24 hour express service to the Archer Avenue line. By 1992, R service was cut back to 71st–Continental Avenue at all times. In its place, the F ran local between 71st Avenue and 179th Street at all times. Bus service In conjunction with the opening of the Archer Avenue line, major modifications were made to bus service. To reduce severe overcrowding at the 169th Street station, Merrick Boulevard bus routes were rerouted to the new Jamaica Center station, including the Q3A and Q4A, which were renumbered the Q83 and Q84, respectively, the Q5, Q42 and the Q85 (renamed/combined Q5A and Q5AB). A canopy was constructed soon after the opening to protect passengers from inclement weather. Limited-stop service was added to the Q4 in the evening rush-hour, supplementing that service in the morning, and was added to the Q5 and Q83 in both rush hours. The Q30, renumbered from the Q17A, and the Q31 were rerouted to serve the Jamaica Center and Sutphin Boulevard stations, having been extended from Jamaica Avenue and 169th Street. The Q17 bus was extended from the 165th Street Bus Terminal to Archer Avenue and Merrick Boulevard, and the Q75 was extended to the Jamaica Bus Terminal. The B22 bus, renamed the Q24, was extended to 171st