A level off? New York Transit Museum/MTA New York City Transit Subway AB Standards (ACF, 1914-1919) were originally built for the BMT, but on Saturday, July 20, 2019, they were part of an excursion that also visited the IND. Seen here at the 34 Street-6 Avenue Station on the lower level (B/D/F/M) with car 2390 in the lead, the train would reverse directions to 96 Street-2 Avenue to pick up the excursion riders. These Nostalgia trains are operated several times a year, and more info can be found on social media or https://www.nytransitmuseum.org/