Staten Island Railway fleet begins entering service
https://www.railwaygazette.com/metros/staten-island-railway-fleet-begins-entering-service/67587.article
Staten Island Railway is a typical commuter line, when we look at timetable. During daytime, only Local trains run at 30 mins, while Local trains run at 15 mins and Express trains run at 15 mins during morning and evening hours.
Much more new fleets must be needed, considering that frequency.
