service was to operate weekdays between 6:30 a.m. and 7 p.m. Trips that ended at 137th Street were extended to 242nd Street, which eliminated the need for a significant reduction in service levels at local stops. The 125th Street station, which is located south of 137th Street, would have experienced a reduction in service. The location of all-stop stations and skip-stop stations was done to evenly distribute passengers between the 1 and the 9, and to accommodate reverse commuting patterns. Stops with ridership greater than 8,000 daily passengers were designated all-stop stations, while less patronized stops were served by either 1 or 9 trains. One change was made from the 1988 plan–due to community input 181st Street was added as an all-stop station. Express service was expected to save up to minutes of travel time, with an additional -minute reduction in waiting time at all-stop stations. This would save a minimum of six minutes, and a maximum of nine minutes or a 19% travel time reduction. Running express service via the center track was dismissed since it was not designed for express service. The track south of 145th Street is not long enough to allow an express train to pass a local, resulting in merging delays at 103rd Street which would eliminate any time saved. In addition, the busiest stops on the line north of 96th Street would be bypassed without any time savings. Extending all-local service to 242nd Street or adding additional trains were dismissed since they would require additional subway cars, which were not available at the time. On July 28, 1989, the MTA Board approved a revised 1/9 skip-stop plan unanimously, with the plan scheduled to take effect on August 21, 1989. Unlike the original plan, 1 trains would skip 145th Street, 191st Street, 207th Street and 225th Street, while 9 trains would skip 157th Street, Dyckman Street, 215th Street and 238th Street. Beginning at 6:30 a.m. on August 21, 1989, the services were coordinated as the /9 and both ran between Van Cortlandt Park–242nd Street and South Ferry. The plan was to have skip-stop service begin north of 116th Street–Columbia University, but due to objections, most notably that riders did not want 125th Street to be a skip-stop station, skip-stop service was only implemented north of 137th Street–City College between the hours of 6:30 am and 7:00 pm weekdays. On September 4, 1994, midday skip-stop service